γ-Aminobutyric acid (GABA) is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABAA receptors, which are ligand-gated chloride channels. The GABAA receptor is generally pentameric. Its five subunits are alpha, beta, gamma, delta, and rho. The GABRD gene encodes the delta subunit.[3] Specifically, the δ-subunit is usually expressed in GABAA receptors associated with extrasynaptic activity. The most common GABAA receptors have the gamma subunit, which allows the receptor to bind benzodiazepines. For this reason, receptors containing δ-subunits are sometimes referred to as “benzodiazepine insensitive” GABAA receptors. The δ-subunit containing receptors are also known to be involved in the ventral tegmental area (VTA) pathway in the brain's hippocampus, which means that they may have implications in learning, memory, and reward.[4]
↑Sommer B, Poustka A, Spurr NK, Seeburg PH (Oct 1990). "The murine GABAA receptor delta-subunit gene: structure and assignment to human chromosome 1". DNA and Cell Biology. 9 (8): 561–8. doi:10.1089/dna.1990.9.561. PMID2176788.
↑Emberger W, Windpassinger C, Petek E, Kroisel PM, Wagner K (Sep 2000). "Assignment of the human GABAA receptor delta-subunit gene (GABRD) to chromosome band 1p36.3 distal to marker NIB1364 by radiation hybrid mapping". Cytogenetics and Cell Genetics. 89 (3–4): 281–2. doi:10.1159/000015636. PMID10965146.
↑ 5.05.1Faragó N, Kocsis ÁK, Lovas S, Molnár G, Boldog E, Rózsa M, Szemenyei V, Vámos E, Nagy LI, Tamás G, Puskás LG (Jun 2013). "Digital PCR to determine the number of transcripts from single neurons after patch-clamp recording". BioTechniques. 54 (6): 327–36. doi:10.2144/000114029. PMID23750542.
Lim J, Hao T, Shaw C, Patel AJ, Szabó G, Rual JF, Fisk CJ, Li N, Smolyar A, Hill DE, Barabási AL, Vidal M, Zoghbi HY (May 2006). "A protein-protein interaction network for human inherited ataxias and disorders of Purkinje cell degeneration". Cell. 125 (4): 801–14. doi:10.1016/j.cell.2006.03.032. PMID16713569.
Lenzen KP, Heils A, Lorenz S, Hempelmann A, Sander T (Jun 2005). "Association analysis of the Arg220His variation of the human gene encoding the GABA delta subunit with idiopathic generalized epilepsy". Epilepsy Research. 65 (1–2): 53–7. doi:10.1016/j.eplepsyres.2005.04.005. PMID16023832.
Windpassinger C, Kroisel PM, Wagner K, Petek E (Jun 2002). "The human gamma-aminobutyric acid A receptor delta (GABRD) gene: molecular characterisation and tissue-specific expression". Gene. 292 (1–2): 25–31. doi:10.1016/S0378-1119(02)00649-2. PMID12119096.
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