lmmol · Proteins

Gamma-aminobutyric acid receptor subunit pi

UniProt O00591 Organism Homo sapiens Gene GABRP

Also known as: GABRP

Function

Pi subunit of the heteropentameric ligand-gated chloride channel gated by gamma-aminobutyric acid (GABA). GABA-gated chloride channels, also named GABA(A) receptors (GABAAR), consist of five subunits arranged around a central pore and contain GABA active binding site(s) located at the alpha and beta subunit interfaces (By similarity). When activated by GABA, GABAARs selectively allow the flow of chloride anions across the cell membrane down their electrochemical gradient. Pi-containing GABAARs are mostly located in peripheral tissues. In the uterus, pi subunits modulate uterus contraction by altering the sensitivity of GABAARs to pregnanolone. In the lungs, pi-containing GABAARs contribute to pulmonary fluid transport via luminal secretion of chloride (By similarity).

Classification

Family (Pfam)
PF02931 Neur_chan_LBD, PF02932 Neur_chan_memb
InterPro
GABAA/Glycine_rcpt, GABAAp_rcpt, GABAAR_pi_TM, Neur_chan_lig-bd, Neur_chan_lig-bd_sf, Neur_channel, Neuro-gated_channel_TM_sf, Neuro_actylchol_rec, Neurotrans-gated_channel_TM, Neurotransmitter_ion_chnl_CS
Functional cluster
Immunoglobulin-Domain Cell Adhesion Proteins

Experimental structures · PDB · 2

A predicted model is available from AlphaFold.

Gene Ontology · 9

Drugs targeting this protein · 66

Related proteins · sequence + function similarity

Co-cited proteins · studied together in the literature

Literature · 5 cited papers

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