5OJM

Structure of a chimaeric beta3-alpha5 GABAA receptor in complex with nanobody Nb25

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD

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	e5ojmA2	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)
A	Neur_chan_memb	e5ojmA1	A: alpha bundles	X: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	H: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	T: Neurotransmitter-gated ion-channel transmembrane pore	F: Neur_chan_memb	ECOD (1.6)
B	Neur_chan_LBD	e5ojmB1	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_memb	e5ojmB2	A: alpha bundles	X: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	H: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	T: Neurotransmitter-gated ion-channel transmembrane pore	F: Neur_chan_memb	ECOD (1.6)
C	Neur_chan_LBD	e5ojmC2	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_memb	e5ojmC1	A: alpha bundles	X: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	H: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	T: Neurotransmitter-gated ion-channel transmembrane pore	F: Neur_chan_memb	ECOD (1.6)
D	Neur_chan_LBD	e5ojmD1	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_memb	e5ojmD2	A: alpha bundles	X: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	H: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	T: Neurotransmitter-gated ion-channel transmembrane pore	F: Neur_chan_memb	ECOD (1.6)
E	Neur_chan_LBD	e5ojmE1	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_memb	e5ojmE2	A: alpha bundles	X: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	H: Neurotransmitter-gated ion-channel transmembrane pore (From Topology)	T: Neurotransmitter-gated ion-channel transmembrane pore	F: Neur_chan_memb	ECOD (1.6)
F [auth K]	V-set_12	e5ojmK1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	ECOD (1.6)
G [auth L]	V-set_12	e5ojmL1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	ECOD (1.6)
I [auth N]	V-set_12	e5ojmN1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	ECOD (1.6)
J [auth O]	V-set_12	e5ojmO1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	ECOD (1.6)
H [auth M]	V-set_12	e5ojmM1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	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)
A	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
B	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
B	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
C	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
C	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
D	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
D	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
E	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (4.3.0)
E	1.20.58.390	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
F [auth K], G [auth L], H [auth M], I [auth N], J [auth O]	Heavy Chain	IGHV1	-	human gabaa receptor chimera beta3-alpha5,gamma-aminobutyric acid receptor subunit beta-3,gamma-aminobutyric acid receptor subunit alpha-5	SAbDab (2024-12-13)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family
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	Human GABAA receptor chimera beta3-alpha5,Gamma-aminobutyric acid receptor subunit beta-3,Gamma-aminobutyric acid receptor subunit alpha-5	molecular transducer activity signaling receptor activity transmitter-gated monoatomic ion channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity monoatomic ion channel activity neurotransmitter receptor activity ligand-gated channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity transporter activity GABA-gated chloride ion channel activity gated channel activity ligand-gated monoatomic anion channel activity molecular transducer activity signaling receptor activity transmitter-gated monoatomic ion channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity monoatomic ion channel activity neurotransmitter receptor activity ligand-gated channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity transporter activity GABA-gated chloride ion channel activity gated channel activity ligand-gated monoatomic anion channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity channel activity transmitter-gated channel activity monoatomic ion transmembrane transporter activity monoatomic anion channel activity transmembrane transporter activity inorganic anion transmembrane transporter activity chloride channel activity ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential protein binding binding signaling receptor binding GABA receptor binding GABA-A receptor activity GABA receptor activity transmembrane signaling receptor activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential postsynaptic neurotransmitter receptor activity neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential identical protein binding	developmental process ear development sensory organ development inner ear development cochlea development animal organ development anatomical structure development transport monoatomic ion transmembrane transport inorganic ion transmembrane transport inorganic anion transmembrane transport establishment of localization chloride transport transmembrane transport developmental process ear development sensory organ development inner ear development cochlea development animal organ development anatomical structure development transport monoatomic ion transmembrane transport inorganic ion transmembrane transport inorganic anion transmembrane transport establishment of localization chloride transport transmembrane transport localization chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport cellular process inorganic anion transport multicellular organismal process mechanoreceptor differentiation inner ear receptor cell development cellular developmental process cell development nervous system development inner ear receptor cell differentiation generation of neurons neurogenesis multicellular organism development neuron differentiation cell differentiation neuron development system development regulation of biological process signaling biological regulation cell-cell signaling gamma-aminobutyric acid signaling pathway cell communication regulation of postsynaptic membrane potential regulation of biological quality regulation of membrane potential cellular response to stimulus regulation of cellular process response to stimulus signal transduction inhibitory synapse assembly cellular component organization cellular component biogenesis cell junction organization cellular component assembly cell junction assembly synapse organization cellular component organization or biogenesis synapse assembly behavior system process learning learning or memory nervous system process cognition associative learning trans-synaptic signaling synaptic transmission, GABAergic chemical synaptic transmission synaptic signaling anterograde trans-synaptic signaling behavioral defense response fear response behavioral fear response defense response response to stress multicellular organismal response to stress nerve development innervation cellular response to nitrogen compound cellular response to organic cyclic compound response to nitrogen compound cellular response to chemical stimulus response to histamine response to chemical cellular response to histamine response to organic cyclic compound roof of mouth development	protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane presynapse protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane presynapse synapse cell junction presynaptic membrane plasma membrane region synaptic membrane postsynaptic specialization membrane postsynaptic specialization postsynapse organelle postsynaptic membrane GABA receptor complex GABA-A receptor complex receptor complex membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen nuclear lumen GABA-ergic synapse cell projection neuron projection plasma membrane bounded cell projection cell leading edge leading edge membrane somatodendritic compartment neuron projection membrane dendrite membrane dendrite dendritic tree cell projection membrane neuronal cell body membrane cell body cell body membrane neuronal cell body intracellular vesicle cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle vesicle organelle membrane neuron spine dendritic spine
F [auth K], G [auth L], H [auth M], I [auth N], J [auth O]	Nanobody Nb25	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E	IPR001390	Gamma-aminobutyric-acid A receptor, alpha subunit	Family
A, B, C, D, E	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
A, B, C, D, E	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
A, B, C, D, E	IPR006028	Gamma-aminobutyric acid A receptor/Glycine receptor alpha	Family
A, B, C, D, E	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
A, B, C, D, E	IPR005435	Gamma-aminobutyric-acid A receptor, alpha 5 subunit	Family
A, B, C, D, E	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
A, B, C, D, E	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
A, B, C, D, E	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
A, B, C, D, E	IPR047024	Gamma-aminobutyric acid receptor subunit alpha 1-6, transmembrane domain	Domain
A, B, C, D, E	IPR006201	Neurotransmitter-gated ion-channel	Family
A, B, C, D, E	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
A, B, C, D, E	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
A, B, C, D, E	IPR006028	Gamma-aminobutyric acid A receptor/Glycine receptor alpha	Family
A, B, C, D, E	IPR002289	Gamma-aminobutyric-acid A receptor, beta subunit	Family
A, B, C, D, E	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
A, B, C, D, E	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
A, B, C, D, E	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
A, B, C, D, E	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
A, B, C, D, E	IPR006201	Neurotransmitter-gated ion-channel	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D, E	Pharos: P28472	Social Communication Disorder epilepsy visual epilepsy status epilepticus mixed anxiety and depressive disorder duplication/inversion 15q11 oligodendroglioma pilocytic astrocytoma primitive neuroectodermal tumor hydrolethalus syndrome intellectual disability atypical teratoid rhabdoid tumor malignant ependymoma breast cancer tetanus Social Communication Disorder epilepsy visual epilepsy status epilepticus mixed anxiety and depressive disorder duplication/inversion 15q11 oligodendroglioma pilocytic astrocytoma primitive neuroectodermal tumor hydrolethalus syndrome intellectual disability atypical teratoid rhabdoid tumor malignant ependymoma breast cancer tetanus peptic ulcer disease glioblastoma schizoaffective disorder astrocytic tumor irritable bowel syndrome autism large cell medulloblastoma malignant glioma epilepsy with generalized tonic-clonic seizures panic disorder Pick disease generalized anxiety disorder alcohol withdrawal delirium schizophrenia insomnia autism spectrum disorder medulloblastoma bipolar disorder epilepsy Angelman syndrome childhood absence epilepsy Lennox-Gastaut syndrome developmental and epileptic encephalopathy, 43 epilepsy, childhood absence, susceptibility to, 5 absence epilepsy autism insomnia autism spectrum disorder intellectual disability schizophrenia depressive disorder malignant ependymoma duplication/inversion 15q11 status epilepticus pancreatic intraductal papillary-mucinous neoplasm astrocytic tumor gastric carcinoma pilocytic astrocytoma glioblastoma bipolar disorder primitive neuroectodermal tumor brain injury interstitial cystitis juvenile absence epilepsy Sjogren syndrome malignant glioma mixed anxiety and depressive disorder epilepsy with generalized tonic-clonic seizures oligodendroglioma epilepsy, childhood absence, susceptibility to, 1 pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia peptic ulcer disease pituitary cancer psoriasis irritable bowel syndrome schizoaffective disorder large cell medulloblastoma Crohn disease lung carcinoma medulloblastoma alcohol withdrawal delirium early myoclonic encephalopathy tetanus panic disorder atypical teratoid rhabdoid tumor Pick disease generalized anxiety disorder Prader-Willi syndrome