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)
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)
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)

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)
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)
B	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)
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)
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)

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)
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)
B	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	transmitter-gated monoatomic ion channel activity molecular transducer activity gated channel activity monoatomic ion channel activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential signaling receptor activity neurotransmitter receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity postsynaptic neurotransmitter receptor activity passive transmembrane transporter activity neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential channel activity transmitter-gated channel activity transmitter-gated monoatomic ion channel activity molecular transducer activity gated channel activity monoatomic ion channel activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential signaling receptor activity neurotransmitter receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity postsynaptic neurotransmitter receptor activity passive transmembrane transporter activity neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential channel activity transmitter-gated channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity excitatory extracellular ligand-gated monoatomic ion channel activity transmembrane signaling receptor activity	-	synaptic cleft extracellular region cellular anatomical entity membrane postsynapse synapse cell junction cell projection neuron projection plasma membrane bounded cell projection

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 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.