2ERJ

Crystal structure of the heterotrimeric interleukin-2 receptor in complex with interleukin-2

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
E	d2erje1	Small proteins	Complement control module/SCR domain	Complement control module/SCR domain	Complement control module/SCR domain	Interleukin-2 receptor alpha chain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2erja1	Small proteins	Complement control module/SCR domain	Complement control module/SCR domain	Complement control module/SCR domain	Interleukin-2 receptor alpha chain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d2erjb1	All beta proteins	Immunoglobulin-like beta-sandwich	Fibronectin type III	Fibronectin type III	Interleukin-2 receptor beta chain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d2erjb3	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F	d2erjf1	All beta proteins	Immunoglobulin-like beta-sandwich	Fibronectin type III	Fibronectin type III	Interleukin-2 receptor beta chain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F	d2erjf3	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d2erjc1	All beta proteins	Immunoglobulin-like beta-sandwich	Fibronectin type III	Fibronectin type III	Cytokine receptor common gamma chain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
G	d2erjg1	All beta proteins	Immunoglobulin-like beta-sandwich	Fibronectin type III	Fibronectin type III	Cytokine receptor common gamma chain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d2erjd_	All alpha proteins	4-helical cytokines	4-helical cytokines	Short-chain cytokines	Interleukin-2 (IL-2)	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
H	d2erjh_	All alpha proteins	4-helical cytokines	4-helical cytokines	Short-chain cytokines	Interleukin-2 (IL-2)	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E	SCOP2B Superfamily	Sushi/CCP/SCR domain	8037669	3000902	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Sushi/CCP/SCR domain	8037668	3000902	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Sushi/CCP/SCR domain	8037668	3000902	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Sushi/CCP/SCR domain	8037669	3000902	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Fibronectin type III	8055185	3002063	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Fibronectin type III	8055545	3002063	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Fibronectin type III	8055185	3002063	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Fibronectin type III	8055545	3002063	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Fibronectin type III	8055179	3002063	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Fibronectin type III	8055542	3002063	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Fibronectin type III	8055542	3002063	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Fibronectin type III	8055179	3002063	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	4-helical cytokines	8037109	3001717	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	4-helical cytokines	8037109	3001717	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	Sushi	e2erjE1	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi	ECOD (1.6)
E	Sushi_3	e2erjE2	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_3	ECOD (1.6)
A	Sushi	e2erjA1	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi	ECOD (1.6)
A	Sushi_3	e2erjA2	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_3	ECOD (1.6)
B	EUF07686	e2erjB4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: EUF07686	ECOD (1.6)
B	fn3_6	e2erjB3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: fn3_6	ECOD (1.6)
F	EUF07686	e2erjF4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: EUF07686	ECOD (1.6)
F	fn3_6	e2erjF3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: fn3_6	ECOD (1.6)
C	fn3_6	e2erjC1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: fn3_6	ECOD (1.6)
C	IL6Ra-bind_1	e2erjC2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: IL6Ra-bind_1	ECOD (1.6)
G	fn3_6	e2erjG1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: fn3_6	ECOD (1.6)
G	IL6Ra-bind_1	e2erjG2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: IL6Ra-bind_1	ECOD (1.6)
D	IL2	e2erjD1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: IL2	ECOD (1.6)
H	IL2	e2erjH1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: IL2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
E	2.10.70.10	Mainly Beta	Ribbon	Complement Module	domain 1	CATH (4.3.0)
E	2.20.28.230	Mainly Beta	Single Sheet	Rubrerythrin, domain 2		CATH (4.3.0)
A	2.10.70.10	Mainly Beta	Ribbon	Complement Module	domain 1	CATH (4.3.0)
A	2.20.28.230	Mainly Beta	Single Sheet	Rubrerythrin, domain 2		CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
G	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)
H	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
A, E	Interleukin-2 receptor subunit alpha	2F-DOMAIN	Homo sapiens (human)	IL2RA*01	F-LIKE-DOMAIN F-DOMAIN	RPI	2F-DOMAIN	IMGT (202450-0)
B, F	Interleukin-2 receptor subunit beta	2F-DOMAIN	Homo sapiens (human)	IL2RB*01	F-LIKE-DOMAIN F-DOMAIN	RPI	2F-DOMAIN	IMGT (202450-0)
D, H	Interleukin-2	IL2	Homo sapiens (human)	IL2	R-LIKE-DOMAIN IL2 (Pr21-153)	RPI	IL2	IMGT (202450-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, E	PF00084	Sushi repeat (SCR repeat) (Sushi)	Sushi repeat (SCR repeat)	-	Domain
B, F	PF18707	Interleukin-2 receptor subunit beta N-terminal domain 1 (IL2RB_N1)	Interleukin-2 receptor subunit beta N-terminal domain 1	IL-2Rbeta is a member of the class I cytokine receptor superfamily [1]. It carries a cytokine-binding homology region, which is divided in two fibronectin type-III (FN-III) domains termed D1 and D2. Each domain contains seven beta-strands that form a ...	IL-2Rbeta is a member of the class I cytokine receptor superfamily [1]. It carries a cytokine-binding homology region, which is divided in two fibronectin type-III (FN-III) domains termed D1 and D2. Each domain contains seven beta-strands that form a sandwich of two antiparallel beta-sheets. The N-terminal D1 domain of IL-2Rbeta includes two highly conserved disulfide bridges [2]. This entry describes D1 of the N-terminal region of IL2Rbeta.	Domain
C, G	PF22012	Cytokine receptor-like factor 2, domain 1 (TSLPR_D1)	Cytokine receptor-like factor 2, domain 1	Cytokine receptor-like factor 2 also known as TSLPR is a receptor for thymic stromal lymphopoietin. It contains two ectodomains with Ig-like topology. This family represents the first of these domains. It also includes domains of interleukin-13 recep ...	Cytokine receptor-like factor 2 also known as TSLPR is a receptor for thymic stromal lymphopoietin. It contains two ectodomains with Ig-like topology. This family represents the first of these domains. It also includes domains of interleukin-13 receptor subunit alpha-2 also known as IL-13RA2 that is known to bind with high affinity to interleukin-13.	Domain
C, G	PF21605	Cytokine receptor-like factor 2-like, D2 domain (CRLF2-like_D2)	Cytokine receptor-like factor 2-like, D2 domain	CRLF2 is a receptor for thymic stromal lymphopoietin (TSLP). It forms a functional complex with TSLP and IL7R which is capable of stimulating cell proliferation through activation of STAT3 and STAT5. CRFL2 is implicated in the development of the hema ...	CRLF2 is a receptor for thymic stromal lymphopoietin (TSLP). It forms a functional complex with TSLP and IL7R which is capable of stimulating cell proliferation through activation of STAT3 and STAT5. CRFL2 is implicated in the development of the hematopoietic system [1]. It consists of two FnIII-like domains, D1 and D2. This entry represents the membrane-proximal D2 domain, which displays a an ABE/C'CFG topology with two disulfide bridges [1]. This domain interacts with IL7R D2 domain and forms a compact network of interactions [1]. This domain is also found in the cytokine receptor common subunit gamma (IL2RG), a common subunit for the receptors for a variety of interleukins [2,3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, E	Interleukin-2 receptor alpha chain	protein binding binding growth factor binding cytokine binding interleukin-2 binding molecular transducer activity interleukin-2 receptor activity transmembrane signaling receptor activity signaling receptor activity cytokine receptor activity immune receptor activity	multicellular organismal process regulation of cellular process positive regulation of cell population proliferation regulation of leukocyte activation regulation of cell activation positive regulation of cell activation T cell activation lymphocyte proliferation positive regulation of leukocyte activation regulation of immune system process positive regulation of immune system process regulation of leukocyte proliferation regulation of biological process cell population proliferation multicellular organismal process regulation of cellular process positive regulation of cell population proliferation regulation of leukocyte activation regulation of cell activation positive regulation of cell activation T cell activation lymphocyte proliferation positive regulation of leukocyte activation regulation of immune system process positive regulation of immune system process regulation of leukocyte proliferation regulation of biological process cell population proliferation positive regulation of T cell activation positive regulation of lymphocyte proliferation positive regulation of T cell proliferation positive regulation of activated T cell proliferation regulation of cell population proliferation mononuclear cell proliferation regulation of leukocyte cell-cell adhesion positive regulation of leukocyte proliferation positive regulation of multicellular organismal process regulation of activated T cell proliferation positive regulation of biological process positive regulation of leukocyte cell-cell adhesion lymphocyte activation leukocyte proliferation leukocyte cell-cell adhesion leukocyte activation activated T cell proliferation positive regulation of cell-cell adhesion positive regulation of lymphocyte activation cell adhesion cell-cell adhesion positive regulation of mononuclear cell proliferation regulation of multicellular organismal process regulation of cell-cell adhesion positive regulation of cellular process T cell proliferation regulation of lymphocyte proliferation positive regulation of cell adhesion regulation of cell adhesion biological regulation cell activation regulation of T cell activation regulation of T cell proliferation immune system process regulation of mononuclear cell proliferation cellular process regulation of lymphocyte activation regulation of alpha-beta T cell activation regulation of alpha-beta T cell proliferation alpha-beta T cell proliferation CD4-positive, alpha-beta T cell activation alpha-beta T cell activation CD4-positive, alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell activation cellular response to stimulus cell surface receptor signaling pathway response to stimulus signaling signal transduction cell communication defense response immune response response to stress inflammatory response inflammatory response to antigenic stimulus interleukin-2-mediated signaling pathway cellular response to interleukin-2 response to cytokine cytokine-mediated signaling pathway response to peptide response to interleukin-2 response to chemical cellular response to cytokine stimulus homeostatic process T cell homeostatic proliferation T cell homeostasis multicellular organismal-level homeostasis regulation of T cell homeostatic proliferation leukocyte homeostasis homeostasis of number of cells lymphocyte homeostasis apoptotic process cell death programmed cell death regulation of defense response regulation of response to external stimulus negative regulation of inflammatory response negative regulation of response to stimulus negative regulation of biological process response to external stimulus regulation of inflammatory response regulation of response to stimulus negative regulation of response to external stimulus regulation of response to stress negative regulation of defense response immune system development developmental process T cell tolerance induction multicellular organism development anatomical structure development regulation of tolerance induction regulation of T cell tolerance induction tolerance induction system development negative regulation of lymphocyte proliferation negative regulation of T cell proliferation negative regulation of cell adhesion negative regulation of leukocyte proliferation negative regulation of T cell activation negative regulation of leukocyte cell-cell adhesion negative regulation of cell-cell adhesion negative regulation of multicellular organismal process negative regulation of leukocyte activation negative regulation of lymphocyte activation negative regulation of mononuclear cell proliferation negative regulation of cellular process negative regulation of cell population proliferation negative regulation of cell activation negative regulation of immune system process Notch signaling pathway leukocyte apoptotic process lymphocyte apoptotic process activation-induced cell death of T cells T cell apoptotic process regulation of leukocyte differentiation mononuclear cell differentiation regulation of cell differentiation lymphocyte differentiation positive regulation of T cell differentiation regulation of cell development positive regulation of developmental process cell differentiation T cell differentiation positive regulation of cell development leukocyte differentiation cellular developmental process regulation of developmental process cell development regulation of T cell differentiation positive regulation of hemopoiesis positive regulation of cell differentiation regulation of lymphocyte differentiation regulation of multicellular organismal development hemopoiesis regulation of hemopoiesis positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex interleukin-2 receptor complex receptor complex
B, F	Interleukin-2 receptor beta chain	molecular transducer activity coreceptor activity signaling receptor activity transmembrane signaling receptor activity cytokine receptor activity immune receptor activity protein binding binding growth factor binding cytokine binding interleukin-2 binding interleukin-2 receptor activity interleukin-15 receptor activity	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling biological regulation cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular response to cytokine stimulus signal transduction adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity immune response immune system process B cell mediated immunity leukocyte mediated immunity immunoglobulin mediated immune response adaptive immune response immune effector process interleukin-2-mediated signaling pathway cellular response to interleukin-2 response to interleukin-2 negative regulation of programmed cell death regulation of apoptotic process negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process apoptotic process programmed cell death regulation of localization import into cell positive regulation of cellular component organization regulation of cellular component organization transport positive regulation of biological process vesicle-mediated transport localization positive regulation of endocytosis phagocytosis positive regulation of cellular process regulation of endocytosis regulation of transport regulation of phagocytosis regulation of vesicle-mediated transport establishment of localization positive regulation of phagocytosis positive regulation of transport endocytosis interleukin-15-mediated signaling pathway cellular response to interleukin-15 response to interleukin-15	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex interleukin-2 receptor complex receptor complex intracellular anatomical structure cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex interleukin-2 receptor complex receptor complex intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle vesicle
C, G	Cytokine receptor common gamma chain	molecular transducer activity coreceptor activity signaling receptor activity transmembrane signaling receptor activity cytokine receptor activity immune receptor activity protein binding binding cytokine binding growth factor binding interleukin-2 binding interleukin-15 receptor activity	cellular homeostasis homeostatic process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular homeostasis homeostatic process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular response to cytokine stimulus cellular process signal transduction interleukin-7-mediated signaling pathway response to interleukin-7 cellular response to interleukin-7 immune response immune system process interleukin-2-mediated signaling pathway cellular response to interleukin-2 response to interleukin-2 regulation of biosynthetic process positive regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular process regulation of localization import into cell positive regulation of cellular component organization regulation of cellular component organization transport vesicle-mediated transport cellular component organization localization positive regulation of endocytosis phagocytosis cellular component organization or biogenesis regulation of endocytosis regulation of transport regulation of phagocytosis regulation of vesicle-mediated transport establishment of localization positive regulation of phagocytosis positive regulation of transport endocytosis developmental process multicellular organismal process cellular developmental process hemopoiesis B cell activation cell activation cell development mononuclear cell differentiation mature B cell differentiation lymphocyte differentiation lymphocyte activation leukocyte activation B cell differentiation cell differentiation anatomical structure development leukocyte differentiation regulation of leukocyte differentiation regulation of leukocyte activation regulation of cell activation regulation of cell differentiation positive regulation of T cell differentiation regulation of cell development T cell differentiation in thymus positive regulation of developmental process multicellular organism development positive regulation of cell activation positive regulation of T cell differentiation in thymus T cell activation positive regulation of leukocyte activation T cell differentiation regulation of immune system process positive regulation of immune system process positive regulation of T cell activation positive regulation of cell development regulation of leukocyte cell-cell adhesion positive regulation of multicellular organismal process regulation of developmental process positive regulation of leukocyte cell-cell adhesion regulation of T cell differentiation in thymus leukocyte cell-cell adhesion positive regulation of cell-cell adhesion regulation of T cell differentiation positive regulation of lymphocyte activation cell adhesion cell-cell adhesion positive regulation of hemopoiesis positive regulation of cell differentiation regulation of multicellular organismal process regulation of cell-cell adhesion regulation of lymphocyte differentiation regulation of multicellular organismal development positive regulation of cell adhesion regulation of cell adhesion regulation of T cell activation regulation of hemopoiesis positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation regulation of lymphocyte activation interleukin-15-mediated signaling pathway cellular response to interleukin-15 response to interleukin-15 interleukin-4-mediated signaling pathway response to interleukin-4 cellular response to interleukin-4 CD4-positive, alpha-beta T cell differentiation alpha-beta T cell differentiation CD4-positive, alpha-beta T cell activation alpha-beta T cell activation CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation regulatory T cell differentiation positive regulation of B cell differentiation regulation of B cell differentiation regulation of B cell activation positive regulation of B cell activation response to interleukin-9 interleukin-9-mediated signaling pathway cellular response to interleukin-9 regulation of alpha-beta T cell activation positive regulation of CD4-positive, alpha-beta T cell differentiation positive regulation of regulatory T cell differentiation positive regulation of alpha-beta T cell activation regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation positive regulation of alpha-beta T cell differentiation regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation positive regulation of CD4-positive, alpha-beta T cell activation positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation regulation of regulatory T cell differentiation regulation of CD4-positive, alpha-beta T cell activation	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen protein-containing complex receptor complex endosome intracellular vesicle endomembrane system cytoplasmic vesicle vesicle endoplasmic reticulum
D, H	Interleukin-2	protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity enzyme regulator activity kinase activator activity enzyme activator activity kinase regulator activity kappa-type opioid receptor binding protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity enzyme regulator activity kinase activator activity enzyme activator activity kinase regulator activity kappa-type opioid receptor binding G protein-coupled receptor binding opioid receptor binding cytokine receptor binding growth factor receptor binding interleukin-2 receptor binding glycosphingolipid binding sphingolipid binding lipid binding glycolipid binding carbohydrate derivative binding carbohydrate binding cytokine activity	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains response to stimulus regulation of leukocyte activation regulation of cell activation B cell activation involved in immune response positive regulation of macromolecule biosynthetic process regulation of primary metabolic process multicellular organism development positive regulation of immune response regulation of immune system process positive regulation of macromolecule metabolic process system development positive regulation of DNA recombination positive regulation of immunoglobulin mediated immune response adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains response to stimulus regulation of leukocyte activation regulation of cell activation B cell activation involved in immune response positive regulation of macromolecule biosynthetic process regulation of primary metabolic process multicellular organism development positive regulation of immune response regulation of immune system process positive regulation of macromolecule metabolic process system development positive regulation of DNA recombination positive regulation of immunoglobulin mediated immune response immune response DNA recombination primary metabolic process DNA metabolic process immune effector process regulation of gene expression biosynthetic process positive regulation of DNA metabolic process regulation of response to stimulus B cell mediated immunity positive regulation of production of molecular mediator of immune response regulation of macromolecule biosynthetic process metabolic process regulation of DNA metabolic process immunoglobulin production regulation of developmental process positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains somatic cell DNA recombination somatic diversification of immunoglobulins involved in immune response positive regulation of lymphocyte activation somatic recombination of immunoglobulin gene segments positive regulation of biosynthetic process regulation of immunoglobulin mediated immune response leukocyte activation involved in immune response regulation of B cell activation positive regulation of isotype switching positive regulation of immune effector process positive regulation of cellular process production of molecular mediator of immune response positive regulation of immunoglobulin production regulation of isotype switching cell activation regulation of macromolecule metabolic process macromolecule biosynthetic process nucleic acid metabolic process positive regulation of gene expression immune system process somatic diversification of immune receptors via germline recombination within a single locus cellular process regulation of lymphocyte activation lymphocyte mediated immunity regulation of immune effector process multicellular organismal process regulation of DNA recombination positive regulation of leukocyte mediated immunity regulation of cellular process cell activation involved in immune response nucleobase-containing compound metabolic process positive regulation of developmental process positive regulation of cell activation positive regulation of metabolic process anatomical structure development positive regulation of leukocyte activation leukocyte mediated immunity somatic diversification of immune receptors regulation of nucleobase-containing compound metabolic process positive regulation of adaptive immune response positive regulation of immune system process somatic recombination of immunoglobulin genes involved in immune response developmental process regulation of biological process positive regulation of nucleobase-containing compound metabolic process regulation of adaptive immune response regulation of B cell mediated immunity somatic diversification of immunoglobulins regulation of leukocyte mediated immunity regulation of immune response positive regulation of multicellular organismal process regulation of production of molecular mediator of immune response macromolecule metabolic process regulation of metabolic process isotype switching immune system development immunoglobulin production involved in immunoglobulin-mediated immune response positive regulation of lymphocyte mediated immunity positive regulation of biological process lymphocyte activation positive regulation of B cell mediated immunity leukocyte activation positive regulation of response to stimulus regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of isotype switching to IgG isotypes regulation of multicellular organismal process lymphocyte activation involved in immune response regulation of biosynthetic process B cell activation biological regulation gene expression adaptive immune response immunoglobulin mediated immune response positive regulation of B cell activation regulation of isotype switching to IgG isotypes regulation of lymphocyte mediated immunity regulation of immunoglobulin production isotype switching to IgG isotypes regulation of defense response regulation of response to external stimulus defense response response to external stimulus regulation of inflammatory response positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stress response to stress positive regulation of defense response inflammatory response cellular response to stimulus cell surface receptor signaling pathway via STAT cell surface receptor signaling pathway signaling cell communication signal transduction cell-cell signaling regulation of leukocyte differentiation mononuclear cell differentiation regulation of cell differentiation mature B cell differentiation positive regulation of B cell differentiation lymphocyte differentiation regulation of cell development regulation of plasma cell differentiation cell differentiation positive regulation of cell development positive regulation of plasma cell differentiation plasma cell differentiation leukocyte differentiation cellular developmental process cell development regulation of B cell differentiation B cell differentiation positive regulation of hemopoiesis positive regulation of cell differentiation regulation of lymphocyte differentiation regulation of multicellular organismal development mature B cell differentiation involved in immune response hemopoiesis regulation of hemopoiesis positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation cell projection organization positive regulation of dendritic spine development regulation of dendritic spine development neuron projection development cellular component organization neurogenesis neuron differentiation dendrite development cellular component organization or biogenesis dendritic spine development plasma membrane bounded cell projection organization nervous system development generation of neurons neuron development T cell activation T cell differentiation signal transduction in absence of ligand cell death extrinsic apoptotic signaling pathway apoptotic signaling pathway extrinsic apoptotic signaling pathway in absence of ligand apoptotic process programmed cell death positive regulation of tissue remodeling tissue remodeling regulation of tissue remodeling natural killer cell activation cell adhesion homeostatic process T cell homeostatic proliferation leukocyte proliferation T cell homeostasis lymphocyte proliferation T cell proliferation regulation of lymphocyte proliferation regulation of leukocyte proliferation cell population proliferation regulation of T cell activation regulation of T cell proliferation multicellular organismal-level homeostasis regulation of T cell homeostatic proliferation leukocyte homeostasis regulation of cell population proliferation mononuclear cell proliferation regulation of mononuclear cell proliferation homeostasis of number of cells lymphocyte homeostasis positive regulation of cell population proliferation positive regulation of B cell proliferation regulation of B cell proliferation positive regulation of mononuclear cell proliferation positive regulation of lymphocyte proliferation B cell proliferation positive regulation of leukocyte proliferation positive regulation of DNA-templated transcription RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II nucleobase-containing compound biosynthetic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription regulation of leukocyte apoptotic process regulation of lymphocyte apoptotic process regulation of B cell apoptotic process negative regulation of programmed cell death leukocyte apoptotic process regulation of apoptotic process negative regulation of biological process B cell apoptotic process regulation of programmed cell death negative regulation of B cell apoptotic process lymphocyte apoptotic process negative regulation of apoptotic process negative regulation of leukocyte apoptotic process negative regulation of cellular process negative regulation of lymphocyte apoptotic process regulation of growth regulation of cellular component organization growth positive regulation of cell growth regulation of cell growth cell growth positive regulation of growth positive regulation of cytosolic calcium ion concentration regulation of biological quality regulation of alpha-beta T cell activation regulation of alpha-beta T cell proliferation alpha-beta T cell proliferation CD4-positive, alpha-beta T cell activation alpha-beta T cell activation CD4-positive, alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell activation interleukin-2-mediated signaling pathway cellular response to interleukin-2 response to cytokine cytokine-mediated signaling pathway response to peptide response to interleukin-2 response to chemical cellular response to cytokine stimulus positive regulation of T cell differentiation positive regulation of T cell activation positive regulation of regulatory T cell differentiation regulation of leukocyte cell-cell adhesion positive regulation of leukocyte cell-cell adhesion leukocyte cell-cell adhesion positive regulation of cell-cell adhesion regulation of T cell differentiation cell-cell adhesion regulation of cell-cell adhesion positive regulation of cell adhesion regulation of cell adhesion regulation of regulatory T cell differentiation regulatory T cell differentiation negative regulation of inflammatory response negative regulation of response to stimulus negative regulation of response to external stimulus negative regulation of defense response response to alcohol response to oxygen-containing compound response to ethanol negative regulation of lymphocyte proliferation negative regulation of lymphocyte activation negative regulation of mononuclear cell proliferation negative regulation of leukocyte proliferation negative regulation of cell population proliferation negative regulation of cell activation negative regulation of immune system process negative regulation of multicellular organismal process negative regulation of leukocyte activation positive regulation of T cell proliferation positive regulation of activated T cell proliferation regulation of activated T cell proliferation activated T cell proliferation response to tacrolimus response to nitrogen compound response to organic cyclic compound cytokine production regulation of cytokine production interleukin-17 production regulation of interleukin-17 production positive regulation of interleukin-17 production positive regulation of cytokine production G protein-coupled receptor signaling pathway alpha-beta T cell differentiation involved in immune response negative regulation of cell adhesion negative regulation of T cell differentiation regulation of T-helper cell differentiation T-helper cell differentiation negative regulation of leukocyte differentiation negative regulation of immune effector process negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains negative regulation of T cell activation negative regulation of leukocyte cell-cell adhesion negative regulation of cell-cell adhesion T-helper 17 cell differentiation negative regulation of T-helper 17 cell differentiation CD4-positive, alpha-beta T cell differentiation alpha-beta T cell differentiation T cell activation involved in immune response negative regulation of cell differentiation regulation of T-helper 17 cell differentiation negative regulation of developmental process negative regulation of T-helper 17 type immune response negative regulation of cell development negative regulation of alpha-beta T cell activation CD4-positive, alpha-beta T cell differentiation involved in immune response negative regulation of hemopoiesis negative regulation of immune response negative regulation of adaptive immune response negative regulation of CD4-positive, alpha-beta T cell activation negative regulation of lymphocyte differentiation negative regulation of CD4-positive, alpha-beta T cell differentiation regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation negative regulation of alpha-beta T cell differentiation alpha-beta T cell activation involved in immune response regulation of T-helper 17 type immune response T cell differentiation involved in immune response negative regulation of T-helper cell differentiation T-helper 17 type immune response regulation of type II interferon production type II interferon production positive regulation of type II interferon production	cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, E	IPR015486	Interleukin-2 receptor alpha	Family
A, E	IPR000436	Sushi/SCR/CCP domain	Domain
A, E	IPR035976	Sushi/SCR/CCP superfamily	Homologous Superfamily
B, F	IPR003531	Short hematopoietin receptor, family 1, conserved site	Conserved Site
B, F	IPR040951	Interleukin-2 receptor subunit beta, N-terminal	Domain
B, F	IPR003961	Fibronectin type III	Domain
B, F	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B, F	IPR036116	Fibronectin type III superfamily	Homologous Superfamily
C, G	IPR048648	Cytokine receptor-like factor 2-like, D2 domain	Domain
C, G	IPR003531	Short hematopoietin receptor, family 1, conserved site	Conserved Site
C, G	IPR053856	Cytokine receptor-like factor 2-like, domain 1	Domain
C, G	IPR003961	Fibronectin type III	Domain
C, G	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C, G	IPR036116	Fibronectin type III superfamily	Homologous Superfamily
D, H	IPR050658	IL-2_family_cytokines	Unknown
D, H	IPR000779	Interleukin-2	Family
D, H	IPR030477	Interleukin-2, conserved site	Conserved Site
D, H	IPR009079	Four-helical cytokine-like, core	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, E	Pharos: P01589	rheumatoid arthritis immunodeficiency due to CD25 deficiency Crohn disease alopecia areata HIV infectious disease juvenile idiopathic arthritis type 1 diabetes mellitus glomerulonephritis type 1 diabetes mellitus 10 multiple sclerosis oligoarticular juvenile idiopathic arthritis malignant mesothelioma chronic beryllium disease schizophrenia allergic contact dermatitis rheumatoid arthritis immunodeficiency due to CD25 deficiency Crohn disease alopecia areata HIV infectious disease juvenile idiopathic arthritis type 1 diabetes mellitus glomerulonephritis type 1 diabetes mellitus 10 multiple sclerosis oligoarticular juvenile idiopathic arthritis malignant mesothelioma chronic beryllium disease schizophrenia allergic contact dermatitis Regional enteritis sclerosing cholangitis Graves disease acquired metabolic disease allergic rhinitis major depressive disorder atopic eczema psoriasis relapsing-remitting multiple sclerosis rheumatoid factor-negative juvenile idiopathic arthritis glioblastoma Hashimoto thyroiditis vitiligo hypothyroidism acute myeloid leukemia inflammatory bowel disease large cell medulloblastoma atypical teratoid rhabdoid tumor neuroblastoma ovarian cancer Crohn's colitis diabetes mellitus ileocolitis interstitial cystitis lung adenocarcinoma asthma marginal zone lymphoma autoimmune disease non-small cell lung carcinoma common variable immunodeficiency primary cutaneous T-cell lymphoma
B, F	Pharos: P14784	rheumatoid arthritis pneumonia juvenile idiopathic arthritis allergic disease oligoarticular juvenile idiopathic arthritis Liver Cirrhosis, Experimental acute myeloid leukemia tuberculosis celiac disease malignant mesothelioma neuroblastoma pneumonitis relapsing-remitting multiple sclerosis rheumatoid factor-negative juvenile idiopathic arthritis vitiligo rheumatoid arthritis pneumonia juvenile idiopathic arthritis allergic disease oligoarticular juvenile idiopathic arthritis Liver Cirrhosis, Experimental acute myeloid leukemia tuberculosis celiac disease malignant mesothelioma neuroblastoma pneumonitis relapsing-remitting multiple sclerosis rheumatoid factor-negative juvenile idiopathic arthritis vitiligo cutaneous lupus erythematosus Graves disease hypothyroidism large cell medulloblastoma lung cancer primary cutaneous T-cell lymphoma Sjogren syndrome bipolar disorder digestive system neuroendocrine neoplasm Hashimoto thyroiditis interstitial cystitis lung carcinoma
C, G	Pharos: P31785	T-B+ severe combined immunodeficiency due to gamma chain deficiency severe combined immunodeficiency Omenn syndrome Sezary syndrome combined immunodeficiency, X-linked Liver Cirrhosis, Experimental multiple sclerosis osteosarcoma prostate carcinoma relapsing-remitting multiple sclerosis acute myeloid leukemia schizophrenia cutaneous lupus erythematosus interstitial cystitis malignant glioma T-B+ severe combined immunodeficiency due to gamma chain deficiency severe combined immunodeficiency Omenn syndrome Sezary syndrome combined immunodeficiency, X-linked Liver Cirrhosis, Experimental multiple sclerosis osteosarcoma prostate carcinoma relapsing-remitting multiple sclerosis acute myeloid leukemia schizophrenia cutaneous lupus erythematosus interstitial cystitis malignant glioma neuroblastoma periodontitis psoriasis breast carcinoma congenital combined immunodeficiency esophageal adenocarcinoma invasive ductal breast carcinoma lung cancer malignant mesothelioma primary cutaneous T-cell lymphoma rheumatoid arthritis Crohn disease glioblastoma large cell medulloblastoma lung carcinoma malignant pancreatic neoplasm
D, H	Pharos: P60568	cancer leukopenia glomerulonephritis autoimmune hepatitis adult T-cell leukemia/lymphoma glioblastoma melanoma nephrotic syndrome Neoplasms, Experimental allergic contact dermatitis dissociative amnesia alopecia areata rheumatoid arthritis giant cell glioblastoma liver cancer cancer leukopenia glomerulonephritis autoimmune hepatitis adult T-cell leukemia/lymphoma glioblastoma melanoma nephrotic syndrome Neoplasms, Experimental allergic contact dermatitis dissociative amnesia alopecia areata rheumatoid arthritis giant cell glioblastoma liver cancer anemia leukemia prostate cancer AIDS major depressive disorder asthma urinary bladder cancer HIV infectious disease autoimmune disease neutropenia influenza paranoid schizophrenia kidney disease pneumonia adult acute respiratory distress syndrome COVID-19 liver neoplasm lymphatic system disease arthritic joint disease autism urinary bladder neoplasm inborn carbohydrate metabolic disorder brain cancer brain injury juvenile idiopathic arthritis peripheral nervous system disease kidney neoplasm cutaneous melanoma lung benign neoplasm allergic disease lymphopenia schizophrenia systemic lupus erythematosus tuberculosis vaginal cancer hypotensive disorder benign neoplasm inflammatory bowel disease kidney cancer peripheral neuropathy breast disease acute T cell leukemia celiac disease liver disease diarrheal disease allergic rhinitis endogenous depression amnestic disorder skin disease

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.