4QHU | pdb_00004qhu

Crystal Structure of IL-17A/Fab6785 complex

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab 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)
A [auth L]	d4qhul2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A [auth L]	d4qhul1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth A]	d4qhua2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth A]	d4qhua1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D [auth B]	d4qhub_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B [auth H]	d4qhuh_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	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 [auth C]	SCOP2B Superfamily	Cystine-knot cytokines	8088224	3000846	SCOP2B (2022-06-29)
F [auth D]	SCOP2B Superfamily	Cystine-knot cytokines	8088224	3000846	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)
A [auth L]	Peptidase_M24	e4qhuL1	A: alpha bundles	X: Rossmann-like	H: 26S proteasome subunit Rpn2 C-terminal domain	T: 26S proteasome subunit Rpn2 C-terminal domain	F: Peptidase_M24	ECOD (develop294)
C [auth A]	Peptidase_M24	e4qhuA1	A: alpha bundles	X: Rossmann-like	H: 26S proteasome subunit Rpn2 C-terminal domain	T: 26S proteasome subunit Rpn2 C-terminal domain	F: Peptidase_M24	ECOD (develop294)
D [auth B]	Peptidase_M24	e4qhuB1	A: alpha bundles	X: Rossmann-like	H: 26S proteasome subunit Rpn2 C-terminal domain	T: 26S proteasome subunit Rpn2 C-terminal domain	F: Peptidase_M24	ECOD (develop294)
D [auth B]	EF-hand_1, EF-hand_6, EF-hand_7	e4qhuB2	A: alpha bundles	X: Lipocalins/Streptavidin	H: SAM/DNA-glycosylase	T: SAM domain-like	F: EF-hand_1, EF-hand_6, EF-hand_7	ECOD (develop294)
B [auth H]	Peptidase_M24	e4qhuH2	A: alpha bundles	X: Rossmann-like	H: 26S proteasome subunit Rpn2 C-terminal domain	T: 26S proteasome subunit Rpn2 C-terminal domain	F: Peptidase_M24	ECOD (develop294)
B [auth H]	EF-hand_1, EF-hand_6, EF-hand_7	e4qhuH1	A: alpha bundles	X: Lipocalins/Streptavidin	H: SAM/DNA-glycosylase	T: SAM domain-like	F: EF-hand_1, EF-hand_6, EF-hand_7	ECOD (develop294)
E [auth C]	Peptidase_M24	e4qhuC1	A: alpha bundles	X: Rossmann-like	H: 26S proteasome subunit Rpn2 C-terminal domain	T: 26S proteasome subunit Rpn2 C-terminal domain	F: Peptidase_M24	ECOD (develop294)
F [auth D]	Peptidase_M24	e4qhuD1	A: alpha bundles	X: Rossmann-like	H: 26S proteasome subunit Rpn2 C-terminal domain	T: 26S proteasome subunit Rpn2 C-terminal domain	F: Peptidase_M24	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C [auth A]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth B]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E [auth C]	2.10.90.10	Mainly Beta	Ribbon	Cystine Knot Cytokines, subunit B	Cystine-knot cytokines	CATH (4.3.0)
F [auth D]	2.10.90.10	Mainly Beta	Ribbon	Cystine Knot Cytokines, subunit B	Cystine-knot cytokines	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 [auth L], C [auth A]	Fab6785	L-LAMBDA	Homo sapiens (human)	IGLV3-101, IGLJ201, IGLJ301, IGLC201, IGLC202, IGLC304	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202610-0)
B [auth H], D [auth B]	Fab6785	VH-CH1	Homo sapiens (human)	IGHV3-2301, IGHV3-23D01, IGHJ301, IGHG101, IGHG102, IGHG104, IGHG1*05	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A [auth L], C [auth A]	Light Chain	IGLV3	Lambda	interleukin-17a	SAbDab (2026-03-20)
B [auth H], D [auth B]	Heavy Chain	IGHV3	-	interleukin-17a	SAbDab (2026-03-20)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E [auth C], F [auth D]	PF06083	Interleukin-17 (IL17)	Interleukin-17	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth L], C [auth A]	Fab6785 light chain	-	-	-
B [auth H], D [auth B]	Fab6785 heavy chain	-	-	-
E [auth C], F [auth D]	Interleukin-17A	protein heterodimerization activity protein binding binding protein dimerization activity identical protein binding protein homodimerization activity molecular function activator activity molecular function regulator activity cytokine activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	regulation of defense response response to stimulus regulation of response to external stimulus negative regulation of inflammatory response negative regulation of biological process regulation of response to wounding response to stress regulation of response to stress response to wounding regulation of biological process regulation of inflammatory response to wounding defense response negative regulation of response to stimulus biological regulation regulation of defense response response to stimulus regulation of response to external stimulus negative regulation of inflammatory response negative regulation of biological process regulation of response to wounding response to stress regulation of response to stress response to wounding regulation of biological process regulation of inflammatory response to wounding defense response negative regulation of response to stimulus biological regulation response to external stimulus regulation of inflammatory response negative regulation of response to wounding negative regulation of inflammatory response to wounding regulation of response to stimulus negative regulation of response to external stimulus inflammatory response to wounding negative regulation of defense response inflammatory response cellular response to stimulus regulation of cellular process cell surface receptor signaling pathway signaling response to cytokine interleukin-17A-mediated signaling pathway cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular process cellular response to cytokine stimulus signal transduction developmental process epithelium development epidermal cell differentiation cellular developmental process epidermis development animal organ development tissue development epithelial cell differentiation skin development cell differentiation keratinocyte differentiation anatomical structure development immune response immune system process adaptive immune response interleukin-6 production multicellular organismal process positive regulation of biological process positive regulation of macromolecule biosynthetic process positive regulation of interleukin-6 production regulation of interleukin-6 production positive regulation of metabolic process positive regulation of biosynthetic process regulation of cytokine production cytokine production regulation of multicellular organismal process positive regulation of macromolecule metabolic process positive regulation of cellular process regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression biosynthetic process positive regulation of gene expression positive regulation of multicellular organismal process regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process positive regulation of cytokine production regulation of metabolic process apoptotic process cell death programmed cell death biological process involved in interspecies interaction between organisms response to other organism defense response to symbiont response to biotic stimulus defense response to other organism innate immune response response to external biotic stimulus cell population proliferation epithelial cell proliferation keratinocyte proliferation cell-cell signaling chemokine (C-X-C motif) ligand 1 production regulation of chemokine production chemokine production positive regulation of chemokine production regulation of chemokine (C-X-C motif) ligand 1 production positive regulation of chemokine (C-X-C motif) ligand 1 production fibroblast activation cell activation regulation of interleukin-12 production interleukin-12 production positive regulation of interleukin-12 production cellular response to interleukin-17 response to interleukin-17 interleukin-17-mediated signaling pathway regulation of primary metabolic process nucleobase-containing compound metabolic process post-transcriptional regulation of gene expression regulation of RNA metabolic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological quality RNA catabolic process mRNA stabilization mRNA catabolic process negative regulation of metabolic process primary metabolic process nucleobase-containing compound catabolic process negative regulation of gene expression negative regulation of macromolecule biosynthetic process nucleic acid catabolic process negative regulation of RNA metabolic process catabolic process RNA metabolic process macromolecule catabolic process negative regulation of mRNA metabolic process regulation of mRNA catabolic process negative regulation of cellular process negative regulation of macromolecule metabolic process negative regulation of catabolic process negative regulation of mRNA catabolic process negative regulation of RNA catabolic process regulation of catabolic process mRNA metabolic process nucleic acid metabolic process regulation of mRNA stability RNA stabilization negative regulation of biosynthetic process regulation of RNA stability regulation of mRNA metabolic process leukocyte migration myeloid leukocyte migration cell migration cell motility granulocyte migration interleukin-1 production regulation of interleukin-1 beta production positive regulation of interleukin-1 beta production positive regulation of interleukin-1 production regulation of interleukin-1 production interleukin-1 beta production regulation of humoral immune response regulation of immune effector process positive regulation of response to biotic stimulus antimicrobial humoral immune response mediated by antimicrobial peptide positive regulation of immune response regulation of immune system process positive regulation of immune system process immune effector process positive regulation of defense response positive regulation of production of molecular mediator of immune response regulation of immune response regulation of production of molecular mediator of immune response humoral immune response regulation of response to biotic stimulus antimicrobial humoral response positive regulation of response to stimulus positive regulation of antimicrobial peptide production positive regulation of humoral immune response positive regulation of response to external stimulus antimicrobial peptide production positive regulation of immune effector process production of molecular mediator of immune response regulation of antimicrobial humoral response positive regulation of antimicrobial humoral response regulation of antimicrobial peptide production defense response to fungus response to fungus positive regulation of interleukin-23 production interleukin-23 production regulation of interleukin-23 production positive regulation of interleukin-16 production regulation of interleukin-16 production interleukin-16 production defense response to Gram-negative bacterium defense response to bacterium response to bacterium system process epithelial structure maintenance homeostatic process digestive system process intestinal epithelial structure maintenance tissue homeostasis maintenance of gastrointestinal epithelium digestion multicellular organismal-level homeostasis anatomical structure homeostasis regulation of cytokine production involved in inflammatory response production of molecular mediator involved in inflammatory response cytokine production involved in inflammatory response positive regulation of cytokine production involved in inflammatory response regulation of tumor necrosis factor production positive regulation of tumor necrosis factor superfamily cytokine production tumor necrosis factor superfamily cytokine production positive regulation of tumor necrosis factor production tumor necrosis factor production regulation of tumor necrosis factor superfamily cytokine production Notch signaling pathway positive regulation of DNA-templated transcription RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription 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 cellular response to interleukin-1 response to interleukin-1 bicellular tight junction assembly positive regulation of cellular component organization regulation of cellular component organization tight junction organization cellular component biogenesis cellular component organization cellular component assembly cell junction assembly cellular component organization or biogenesis cell-cell junction assembly cell-cell junction organization regulation of bicellular tight junction assembly positive regulation of cellular component biogenesis regulation of cellular component biogenesis apical junction assembly regulation of cell junction assembly positive regulation of cell junction assembly positive regulation of bicellular tight junction assembly cell junction organization tight junction assembly defense response to Gram-positive bacterium myeloid leukocyte differentiation regulation of leukocyte differentiation regulation of developmental process cell development regulation of cell differentiation positive regulation of osteoclast differentiation regulation of cell development positive regulation of developmental process regulation of osteoclast differentiation multicellular organism development positive regulation of cell differentiation positive regulation of hemopoiesis osteoclast differentiation regulation of multicellular organismal development hemopoiesis regulation of myeloid cell differentiation positive regulation of cell development regulation of myeloid leukocyte differentiation positive regulation of myeloid leukocyte differentiation myeloid cell differentiation positive regulation of myeloid cell differentiation regulation of hemopoiesis positive regulation of leukocyte differentiation leukocyte differentiation	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E [auth C], F [auth D]	IPR029034	Cystine-knot cytokine	Homologous Superfamily
E [auth C], F [auth D]	IPR010345	Interleukin-17 family	Family
E [auth C], F [auth D]	IPR020440	Interleukin-17, chordata	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E [auth C], F [auth D]	Pharos: Q16552	acute promyelocytic leukemia allergic disease pneumonia autoimmune disease Arthritis, Experimental multiple sclerosis brain ischemia central nervous system disease graft versus host disease colitis ankylosing spondylitis pneumonitis COVID-19 pulmonary edema tuberculosis acute promyelocytic leukemia allergic disease pneumonia autoimmune disease Arthritis, Experimental multiple sclerosis brain ischemia central nervous system disease graft versus host disease colitis ankylosing spondylitis pneumonitis COVID-19 pulmonary edema tuberculosis drug-induced liver injury vasculitis acute lung injury inborn carbohydrate metabolic disorder arthritic joint disease influenza psoriasis demyelinating disease ulcerative colitis X-linked lymphoproliferative syndrome hypereosinophilic syndrome kidney disease asthma cancer obesity disorder psoriatic arthritis diarrheal disease skin disease uveitis exocrine pancreatic carcinoma alcohol abuse inflammatory bowel disease liver disease lymphoproliferative syndrome candidiasis periodontitis

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.