Annotations: 1I9B

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1i9ba1	All beta proteins	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Acetylcholine binding protein (ACHBP)	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
A	d1i9ba2	Artifacts	Tags	Tags	Tags	N-terminal Tags	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
B	d1i9bb1	All beta proteins	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Acetylcholine binding protein (ACHBP)	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
B	d1i9bb2	Artifacts	Tags	Tags	Tags	N-terminal Tags	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
C	d1i9bc1	All beta proteins	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Acetylcholine binding protein (ACHBP)	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
C	d1i9bc2	Artifacts	Tags	Tags	Tags	N-terminal Tags	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
D	d1i9bd1	All beta proteins	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Acetylcholine binding protein (ACHBP)	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
D	d1i9bd2	Artifacts	Tags	Tags	Tags	N-terminal Tags	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
E	d1i9be1	All beta proteins	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Nicotinic receptor ligand binding domain-like	Acetylcholine binding protein (ACHBP)	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)
E	d1i9be2	Artifacts	Tags	Tags	Tags	N-terminal Tags	great pond snail (Lymnaea stagnalis ) [TaxId: 6523 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Nicotinic receptor ligand binding domain-like	8035210	3000369	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nicotinic receptor ligand binding domain-like	8035210	3000369	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Nicotinic receptor ligand binding domain-like	8035210	3000369	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Nicotinic receptor ligand binding domain-like	8035210	3000369	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Nicotinic receptor ligand binding domain-like	8035210	3000369	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	Neur_chan_LBD	e1i9bA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Nicotinic receptor ligand binding domain-like (From Topology)	T: Nicotinic receptor ligand binding domain-like	F: Neur_chan_LBD	ECOD (1.6)
B	Neur_chan_LBD	e1i9bB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Nicotinic receptor ligand binding domain-like (From Topology)	T: Nicotinic receptor ligand binding domain-like	F: Neur_chan_LBD	ECOD (1.6)
C	Neur_chan_LBD	e1i9bC1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Nicotinic receptor ligand binding domain-like (From Topology)	T: Nicotinic receptor ligand binding domain-like	F: Neur_chan_LBD	ECOD (1.6)
D	Neur_chan_LBD	e1i9bD1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Nicotinic receptor ligand binding domain-like (From Topology)	T: Nicotinic receptor ligand binding domain-like	F: Neur_chan_LBD	ECOD (1.6)
E	Neur_chan_LBD	e1i9bE1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Nicotinic receptor ligand binding domain-like (From Topology)	T: Nicotinic receptor ligand binding domain-like	F: Neur_chan_LBD	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E	PF02931	Neurotransmitter-gated ion-channel ligand binding domain (Neur_chan_LBD)	Neurotransmitter-gated ion-channel ligand binding domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E	ACETYLCHOLINE BINDING 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 molecular transducer activity transmembrane signaling receptor activity signaling receptor activity	-	synaptic cleft extracellular region cellular anatomical entity membrane synapse cell junction

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E	IPR007110	Immunoglobulin-like domain	Domain
A, B, C, D, E	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
A, B, C, D, E	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
A, B, C, D, E	IPR006201	Neurotransmitter-gated ion-channel	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.