Annotations: 3IGQ

Crystal structure of the extracellular domain of a bacterial pentameric ligand-gated ion channel

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F	adh_short	e3igqF1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: adh_short	ECOD (v294.2)
E	adh_short	e3igqE1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: adh_short	ECOD (v294.2)
D	adh_short	e3igqD1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: adh_short	ECOD (v294.2)
C	adh_short	e3igqC1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: adh_short	ECOD (v294.2)
B	adh_short	e3igqB1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: adh_short	ECOD (v294.2)
A	adh_short	e3igqA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: adh_short	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
E	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
D	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
C	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
B	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
A	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	Glr4197 protein	ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity potassium channel activity monoatomic cation channel activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity potassium channel activity monoatomic cation channel activity metal ion transmembrane transporter activity sodium channel activity sodium ion transmembrane transporter activity identical protein binding protein binding binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity	-	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR006028	Gamma-aminobutyric acid A receptor/Glycine receptor alpha	Family
A, B, C, D, E A, B, C, D, E, F	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR006201	Neurotransmitter-gated ion-channel	Family

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Cys-Loop Receptor Family	Prokaryotic "pentameric" ligand-gated ion channel (GLIC) with hexameric quaternary structure

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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.