Molecular Target Synopsis
Domains and Structures
Drugs and Clinical Candidates
Ligand Efficiency Plot
Family Cladogram
Interaction Network
Gene Expression
Gene Copy Number Variation
Germline Genetics

GABRB1 (P18505) - Overview - Molecular Target Synopsis


GABRB1, Gamma-aminobutyric acid receptor subunit beta-1
UniProt P18505

Also Known as GBRB1_HUMAN, GABRB1

Component of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel. Binds UBQLN1 (By similarity). Heteropentamer, formed by a combination of alpha, beta, gamma, delta and rho chains. Interacts with KCTD8, KCTD12 and KCTD16; this interaction determines the pharmacology and kinetics of the receptor response, the KCTD proteins markedly accelerating the GABA-B response, although to different extents.

Isoforms / Transcripts (Protein Coding)


GABRB1 is targeted by Approved Drugs Ethchlorvynol, Clobazam, Eszopiclone. (see details)

Sub-cellular localization

UniProt: GABRB1 is active in the following subcellular-locations: cell junction, cell membrane, postsynaptic cell membrane, synapse.
GO terms: GABRB1 is active in the following subcellular-locations: cell junction, chloride channel complex, cytoplasm, dendrite, GABA-A receptor complex, GABA-ergic synapse, integral component of plasma membrane, neuron projection, nuclear envelope, plasma membrane, postsynaptic membrane, synapse.

GO terms

Gene Copy Number Variation

In COSMIC - Cell Lines Project GABRB1 has gain in 0 cell-lines, loss in 3 cell-lines and no signal in 1002 cell-lines. (see details)

Gene Expression

In NCI60, the highest expressing cell lines are: SF_295, ACHN, MCF7

In Array Express (RNA-seq of 675 commonly used human cancer cell lines), the highest expressing cell lines are: NCI-H209, HCC12, SK-N-FI

In Array Express (RNA-seq of long poly adenylated RNA and long non poly adenylated RNA from ENCODE cell lines), the highest expressing cell lines are: SK-N-SH, NHLF, HSMM

(see details)

3D Structures

For GABRB1 there are:
2 structures (4 chains) solved
2 are solved in complex with at least one small molecule ligand

(see details)
Molecular Target 3D Synopsis

Screening and Chemistry

GABRB1 has been screened with 725 compounds (1041 bioactivities), 271 compounds have bioactivities that show binding affinity of <= 500nM (343 bioactivities). (see details)