Annotations: 9CRS

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	Gp138_N	e9crsE01	A: alpha bundles	X: Helical bundle insertion in helicase domains	H: Helical bundle in Hef helicase	T: Helical bundle in Hef helicase	F: Gp138_N	ECOD (develop294)
B	Gp138_N	e9crsB01	A: alpha bundles	X: Helical bundle insertion in helicase domains	H: Helical bundle in Hef helicase	T: Helical bundle in Hef helicase	F: Gp138_N	ECOD (develop294)
A	Gp138_N	e9crsA01	A: alpha bundles	X: Helical bundle insertion in helicase domains	H: Helical bundle in Hef helicase	T: Helical bundle in Hef helicase	F: Gp138_N	ECOD (develop294)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
G [auth J], H [auth K]	Heavy Chain	IGHV14	-	gamma-aminobutyric acid receptor subunit alpha-1	SAbDab (2026-03-20)
F [auth I], I [auth L]	Light Chain	IGKV6	Kappa	gamma-aminobutyric acid receptor subunit alpha-1	SAbDab (2026-03-20)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family
E	PF02931	Neurotransmitter-gated ion-channel ligand binding domain (Neur_chan_LBD)	Neurotransmitter-gated ion-channel ligand binding domain	-	Family
B, D	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family
B, D	PF02931	Neurotransmitter-gated ion-channel ligand binding domain (Neur_chan_LBD)	Neurotransmitter-gated ion-channel ligand binding domain	-	Family
A, C	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family
A, C	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
G [auth J], H [auth K]	IgG2b Fab_1F4 Heavy Chain	-	-	-
F [auth I], I [auth L]	Kappa Fab_1F4 Light Chain	-	-	-
E	Gamma-aminobutyric acid receptor subunit gamma-2	transmitter-gated monoatomic ion channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity GABA-gated chloride ion channel activity molecular transducer activity gated channel activity monoatomic ion channel activity signaling receptor activity ligand-gated monoatomic anion channel activity neurotransmitter receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity channel activity transmitter-gated monoatomic ion channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity GABA-gated chloride ion channel activity molecular transducer activity gated channel activity monoatomic ion channel activity signaling receptor activity ligand-gated monoatomic anion channel activity neurotransmitter receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity channel activity transmitter-gated channel activity monoatomic ion transmembrane transporter activity monoatomic anion channel activity transporter activity transmembrane transporter activity chloride channel activity benzodiazepine receptor activity GABA-A receptor activity GABA receptor activity transmembrane signaling receptor activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential	transport monoatomic ion 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 cellular response to nitrogen compound cellular response to stimulus transport monoatomic ion 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 cellular response to nitrogen compound cellular response to stimulus cellular response to chemical stimulus response to histamine response to stimulus response to chemical cellular response to histamine response to nitrogen compound behavior adult behavior multicellular organismal process regulation of biological process signaling biological regulation cell-cell signaling gamma-aminobutyric acid signaling pathway cell communication developmental process inhibitory synapse assembly nervous system development cellular component organization cellular component biogenesis multicellular organism development cell junction organization cellular component assembly cell junction assembly anatomical structure development synapse organization cellular component organization or biogenesis synapse assembly system development trans-synaptic signaling synaptic transmission, GABAergic chemical synaptic transmission synaptic signaling anterograde trans-synaptic signaling post-embryonic development	protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex cell periphery postsynapse postsynaptic membrane synapse cell junction plasma membrane protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex cell periphery postsynapse postsynaptic membrane synapse cell junction plasma membrane plasma membrane region synaptic membrane postsynaptic specialization membrane postsynaptic specialization organelle GABA receptor complex GABA-A receptor complex receptor complex GABA-ergic synapse membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle cytoplasm vesicle organelle membrane cell leading edge neuron projection leading edge membrane plasma membrane bounded cell projection somatodendritic compartment neuron projection membrane cell projection dendrite membrane dendrite dendritic tree cell projection membrane neuron spine dendritic spine axon
B, D	Gamma-aminobutyric acid receptor subunit alpha-1	transmitter-gated monoatomic ion channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity GABA-gated chloride ion channel activity molecular transducer activity gated channel activity monoatomic ion channel activity signaling receptor activity ligand-gated monoatomic anion channel activity neurotransmitter receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity channel activity transmitter-gated monoatomic ion channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity GABA-gated chloride ion channel activity molecular transducer activity gated channel activity monoatomic ion channel activity signaling receptor activity ligand-gated monoatomic anion channel activity neurotransmitter receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity channel activity transmitter-gated channel activity monoatomic ion transmembrane transporter activity monoatomic anion channel activity transporter activity transmembrane transporter activity chloride channel activity GABA-A receptor activity GABA receptor activity transmembrane signaling receptor activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential	transport monoatomic ion 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 regulation of biological process signaling transport monoatomic ion 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 regulation of biological process signaling biological regulation cell-cell signaling gamma-aminobutyric acid signaling pathway cell communication developmental process multicellular organismal process inhibitory synapse assembly nervous system development cellular component organization cellular component biogenesis multicellular organism development cell junction organization cellular component assembly cell junction assembly anatomical structure development synapse organization cellular component organization or biogenesis synapse assembly system development trans-synaptic signaling synaptic transmission, GABAergic chemical synaptic transmission synaptic signaling anterograde trans-synaptic signaling	protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex GABA receptor complex receptor complex cell periphery plasma membrane postsynaptic specialization membrane postsynaptic specialization protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex GABA receptor complex receptor complex cell periphery plasma membrane postsynaptic specialization membrane postsynaptic specialization synapse synaptic membrane postsynapse organelle postsynaptic membrane cell junction plasma membrane region GABA-A receptor complex GABA-ergic synapse membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle cytoplasm vesicle organelle membrane cell leading edge neuron projection leading edge membrane plasma membrane bounded cell projection somatodendritic compartment neuron projection membrane cell projection dendrite membrane dendrite dendritic tree cell projection membrane neuron spine dendritic spine
A, C	Gamma-aminobutyric acid receptor subunit beta-2	transmitter-gated monoatomic ion channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity GABA-gated chloride ion channel activity molecular transducer activity gated channel activity monoatomic ion channel activity signaling receptor activity ligand-gated monoatomic anion channel activity neurotransmitter receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity channel activity transmitter-gated monoatomic ion channel activity monoatomic anion transmembrane transporter activity chloride transmembrane transporter activity GABA-gated chloride ion channel activity molecular transducer activity gated channel activity monoatomic ion channel activity signaling receptor activity ligand-gated monoatomic anion channel activity neurotransmitter receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity passive transmembrane transporter activity channel activity transmitter-gated channel activity monoatomic ion transmembrane transporter activity monoatomic anion channel activity transporter activity transmembrane transporter activity chloride channel activity GABA-A receptor activity GABA receptor activity transmembrane signaling receptor activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential	developmental process ear development sensory organ development inner ear development cochlea development animal organ development anatomical structure development transport monoatomic ion transmembrane transport establishment of localization chloride transport transmembrane transport localization chloride 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 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 cellular response to nitrogen compound cellular response to stimulus cellular response to chemical stimulus response to histamine response to stimulus response to chemical cellular response to histamine response to nitrogen compound 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 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 trans-synaptic signaling synaptic signaling anterograde trans-synaptic signaling chemical synaptic transmission synaptic transmission, GABAergic nerve development innervation	protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex cell periphery postsynapse postsynaptic membrane synapse cell junction plasma membrane protein-containing complex cellular anatomical structure transmembrane transporter complex membrane chloride channel complex membrane protein complex transporter complex monoatomic ion channel complex cell periphery postsynapse postsynaptic membrane synapse cell junction plasma membrane plasma membrane region synaptic membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle postsynaptic specialization membrane postsynaptic specialization GABA receptor complex GABA-A receptor complex receptor complex GABA-ergic synapse intracellular anatomical structure intracellular vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle cytoplasm organelle membrane neuron spine neuron projection dendritic spine plasma membrane bounded cell projection somatodendritic compartment cell projection dendrite dendritic tree

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E	IPR005437	Gamma-aminobutyric acid receptor subunit gamma-1/4	Family
E	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
E	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
E	IPR006028	Gamma-aminobutyric acid A receptor/Glycine receptor alpha	Family
E	IPR005439	Gamma-aminobutyric-acid A receptor, gamma 2 subunit	Family
E	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
E	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
E	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
E	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
E	IPR006201	Neurotransmitter-gated ion-channel	Family
B, D	IPR001390	Gamma-aminobutyric-acid A receptor, alpha subunit	Family
B, D	IPR005431	Gamma-aminobutyric-acid A receptor, alpha 1 subunit	Family
B, D	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
B, D	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
B, D	IPR006028	Gamma-aminobutyric acid A receptor/Glycine receptor alpha	Family
B, D	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
B, D	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
B, D	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
B, D	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
B, D	IPR047024	Gamma-aminobutyric acid receptor subunit alpha 1-6, transmembrane domain	Domain
B, D	IPR047079	Gamma-aminobutyric acid receptor subunit alpha-1, extracellular domain	Domain
B, D	IPR006201	Neurotransmitter-gated ion-channel	Family
A, C	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
A, C	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
A, C	IPR006028	Gamma-aminobutyric acid A receptor/Glycine receptor alpha	Family
A, C	IPR002289	Gamma-aminobutyric-acid A receptor, beta subunit	Family
A, C	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
A, C	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
A, C	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
A, C	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
A, C	IPR006201	Neurotransmitter-gated ion-channel	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E	Pharos: P18507	childhood absence epilepsy febrile seizures, familial, 8 hepatic encephalopathy epilepsy juvenile absence epilepsy cocaine dependence absence epilepsy generalized epilepsy with febrile seizures plus hepatic coma early myoclonic encephalopathy cocaine abuse Dravet syndrome alcohol abuse amphetamine abuse rolandic epilepsy childhood absence epilepsy febrile seizures, familial, 8 hepatic encephalopathy epilepsy juvenile absence epilepsy cocaine dependence absence epilepsy generalized epilepsy with febrile seizures plus hepatic coma early myoclonic encephalopathy cocaine abuse Dravet syndrome alcohol abuse amphetamine abuse rolandic epilepsy insomnia status epilepticus developmental and epileptic encephalopathy, 6 malignant glioma tetanus mixed anxiety and depressive disorder pilocytic astrocytoma primitive neuroectodermal tumor schizophrenia atypical teratoid rhabdoid tumor intellectual disability large cell medulloblastoma lung carcinoma subependymal giant cell astrocytoma medulloblastoma epilepsy with generalized tonic-clonic seizures panic disorder alcohol withdrawal delirium peptic ulcer disease generalized epilepsy with febrile seizures plus, type 1 pseudotumor cerebri astrocytic tumor irritable bowel syndrome Lennox-Gastaut syndrome malignant ependymoma oligodendroglioma partial epilepsy Pick disease generalized anxiety disorder glioblastoma
B, D	Pharos: P14867	developmental and epileptic encephalopathy, 19 juvenile myoclonic epilepsy hepatic encephalopathy essential tremor epilepsy childhood absence epilepsy epilepsy, idiopathic generalized, susceptibility to, 13 hepatic coma amyotrophic lateral sclerosis type 1 Ataxia generalized anxiety disorder pilocytic astrocytoma atypical teratoid rhabdoid tumor primitive neuroectodermal tumor bipolar disorder developmental and epileptic encephalopathy, 19 juvenile myoclonic epilepsy hepatic encephalopathy essential tremor epilepsy childhood absence epilepsy epilepsy, idiopathic generalized, susceptibility to, 13 hepatic coma amyotrophic lateral sclerosis type 1 Ataxia generalized anxiety disorder pilocytic astrocytoma atypical teratoid rhabdoid tumor primitive neuroectodermal tumor bipolar disorder irritable bowel syndrome Lennox-Gastaut syndrome Dravet syndrome malignant glioma EJM1 mixed anxiety and depressive disorder epilepsy with generalized tonic-clonic seizures oligodendroglioma anxiety disorder Parkinson disease peptic ulcer disease glioblastoma autism pseudotumor cerebri insomnia developmental and epileptic encephalopathy, 6 alcohol abuse status epilepticus medulloblastoma tetanus ovarian cyst astrocytic tumor partial epilepsy Pick disease schizophrenia intellectual disability corpus luteum cyst large cell medulloblastoma malignant ependymoma alcohol withdrawal delirium subependymal giant cell astrocytoma early myoclonic encephalopathy panic disorder
A, C	Pharos: P47870	epilepsy schizophrenia pilocytic astrocytoma Epilepsy characterized by intractable complex partial seizures primitive neuroectodermal tumor epileptic encephalopathy, infantile or early childhood, 2 generalized anxiety disorder adrenal cortex carcinoma large cell medulloblastoma astrocytic tumor medulloblastoma atypical teratoid rhabdoid tumor oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm early myoclonic encephalopathy epilepsy schizophrenia pilocytic astrocytoma Epilepsy characterized by intractable complex partial seizures primitive neuroectodermal tumor epileptic encephalopathy, infantile or early childhood, 2 generalized anxiety disorder adrenal cortex carcinoma large cell medulloblastoma astrocytic tumor medulloblastoma atypical teratoid rhabdoid tumor oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm early myoclonic encephalopathy epilepsy with generalized tonic-clonic seizures pseudotumor cerebri glioblastoma insomnia status epilepticus alcohol withdrawal delirium Lennox-Gastaut syndrome malignant ependymoma B-cell chronic lymphocytic leukemia osteosarcoma panic disorder peptic ulcer disease irritable bowel syndrome tetanus liver disease malignant glioma mixed anxiety and depressive disorder attention deficit hyperactivity disorder, inattentive type bipolar disorder ovarian cancer childhood absence epilepsy partial epilepsy