1XL4 | pdb_00001xl4

Intermediate gating structure 1 of the inwardly rectifying K+ channel KirBac3.1

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1xl4b1	All beta proteins	Immunoglobulin-like beta-sandwich	E set domains	Cytoplasmic domain of inward rectifier potassium channel	Inward rectifier potassium channel kirbac3.1	(Paramagnetospirillum magnetotacticum ) [TaxId: 188 ],	SCOPe (2.08)
B	d1xl4b2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Inward rectifier potassium channel kirbac3.1	(Paramagnetospirillum magnetotacticum ) [TaxId: 188 ],	SCOPe (2.08)
B	d1xl4b3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Paramagnetospirillum magnetotacticum ) [TaxId: 188 ],	SCOPe (2.08)
A	d1xl4a1	All beta proteins	Immunoglobulin-like beta-sandwich	E set domains	Cytoplasmic domain of inward rectifier potassium channel	Inward rectifier potassium channel kirbac3.1	(Paramagnetospirillum magnetotacticum ) [TaxId: 188 ],	SCOPe (2.08)
A	d1xl4a2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Inward rectifier potassium channel kirbac3.1	(Paramagnetospirillum magnetotacticum ) [TaxId: 188 ],	SCOPe (2.08)
A	d1xl4a3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Paramagnetospirillum magnetotacticum ) [TaxId: 188 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	E set domains	8003761	3000070	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Voltage-gated potassium channels	8017699	3000023	SCOP2B (2022-06-29)
A	SCOP2 Family	Voltage-gated potassium channels	8003419	4000034	SCOP2 (2022-06-29)
A	SCOP2 Family	Cytoplasmic domain of inward rectifier potassium channel	8003424	4000319	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Voltage-gated potassium channels	8017699	3000023	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	E set domains	8003761	3000070	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e1xl4B1	A: Cloacin translocation domain	X: Cloacin translocation domain	H: Cloacin translocation domain	T: Copper-bind	F:	ECOD (20:10:01)
B		e1xl4B2	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: Propep_M14	F:	ECOD (20:10:01)
A		e1xl4A1	A: Immunoglobulin-like beta-sandwich	X: Immunoglobulin-related	H: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	T: IRK_C	F:	ECOD (20:10:01)
A		e1xl4A2	A: Voltage-gated ion channels	X: Voltage-gated ion channels	H: Voltage-gated ion channels	T: Ion_trans_2	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
B	2.60.40.1400	Mainly Beta	Sandwich	Immunoglobulin-like	G protein-activated inward rectifier potassium channel 1	CATH (4.3.0)
A	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
A	2.60.40.1400	Mainly Beta	Sandwich	Immunoglobulin-like	G protein-activated inward rectifier potassium channel 1	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Inward rectifier potassium channel	inward rectifier potassium channel activity monoatomic cation transmembrane transporter activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity voltage-gated channel activity voltage-gated monoatomic ion channel activity potassium channel activity voltage-gated monoatomic cation channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity monoatomic cation channel activity passive transmembrane transporter activity voltage-gated potassium channel activity channel activity inward rectifier potassium channel activity monoatomic cation transmembrane transporter activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity voltage-gated channel activity voltage-gated monoatomic ion channel activity potassium channel activity voltage-gated monoatomic cation channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity monoatomic cation channel activity passive transmembrane transporter activity voltage-gated potassium channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity ligand-gated monoatomic cation channel activity transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding	import into cell transport monoatomic ion transmembrane transport import across plasma membrane potassium ion transmembrane transport establishment of localization inorganic cation import across plasma membrane metal ion transport monoatomic cation transmembrane transport transmembrane transport localization inorganic ion import across plasma membrane monoatomic ion transport potassium ion transport import into cell transport monoatomic ion transmembrane transport import across plasma membrane potassium ion transmembrane transport establishment of localization inorganic cation import across plasma membrane metal ion transport monoatomic cation transmembrane transport transmembrane transport localization inorganic ion import across plasma membrane monoatomic ion transport potassium ion transport cellular process potassium ion import across plasma membrane monoatomic cation transport regulation of localization regulation of biological process regulation of cellular process regulation of transport regulation of monoatomic ion transport biological regulation regulation of monoatomic ion transmembrane transport regulation of transmembrane transport	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex transmembrane transporter complex membrane protein complex transporter complex monoatomic ion channel complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR041647	Inward rectifier potassium channel, C-terminal	Domain
A, B	IPR016449	Potassium channel, inwardly rectifying, Kir	Family
A, B	IPR013099	Potassium channel domain	Domain
A, B	IPR014756	Immunoglobulin E-set	Homologous Superfamily
A, B	IPR013518	Potassium channel, inwardly rectifying, Kir, cytoplasmic	Homologous Superfamily

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	KirBac3.1 Inward-Rectifier Potassium channel (semi-latched)

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.