Glutamate decarboxylase 1 (brain, 67kDa) (GAD67), also known as GAD1, is a human gene.[5]
This gene encodes one of several forms of glutamic acid decarboxylase, identified as a major autoantigen in insulin-dependent diabetes. The enzyme encoded is responsible for catalyzing the production of gamma-aminobutyric acid from L-glutamic acid. A pathogenic role for this enzyme has been identified in the humanpancreas since it has been identified as an autoantigen and an autoreactive T cell target in insulin-dependent diabetes. This gene may also play a role in the stiff man syndrome. Deficiency in this enzyme has been shown to lead to pyridoxine dependency with seizures. Alternative splicing of this gene results in two products, the predominant 67-kD form and a less-frequent 25-kD form.[5]
Kelly CD, Edwards Y, Johnstone AP, Harfst E, Nógrádi A, Nussey SS, Povey S, Carter ND (1992). "Nucleotide sequence and chromosomal assignment of a cDNA encoding the large isoform of human glutamate decarboxylase". Ann. Hum. Genet. 56 (Pt 3): 255–65. doi:10.1111/j.1469-1809.1992.tb01150.x. PMID1339255. S2CID35482098.
Cram DS, Barnett LD, Joseph JL, Harrison LC (1991). "Cloning and partial nucleotide sequence of human glutamic acid decarboxylase cDNA from brain and pancreatic islets". Biochem. Biophys. Res. Commun. 176 (3): 1239–44. doi:10.1016/0006-291X(91)90418-7. PMID2039509.
Bu DF, Tobin AJ (1994). "The exon-intron organization of the genes (GAD1 and GAD2) encoding two human glutamate decarboxylases (GAD67 and GAD65) suggests that they derive from a common ancestral GAD". Genomics. 21 (1): 222–8. doi:10.1006/geno.1994.1246. PMID8088791.
Yamashita K, Cram DS, Harrison LC (1993). "Molecular cloning of full-length glutamic acid decarboxylase 67 from human pancreas and islets". Biochem. Biophys. Res. Commun. 192 (3): 1347–52. doi:10.1006/bbrc.1993.1564. PMID8507202.
Kawasaki E, Moriuchi R, Watanabe M, Saitoh K, Brunicardi FC, Watt PC, Yamaguchi T, Mullen Y, Akazawa S, Miyamoto T (1993). "Cloning and expression of large isoform of glutamic acid decarboxylase from human pancreatic islet". Biochem. Biophys. Res. Commun. 192 (3): 1353–9. doi:10.1006/bbrc.1993.1565. PMID8507203.
Luo J, Kaplitt MG, Fitzsimons HL, Zuzga DS, Liu Y, Oshinsky ML, During MJ (2002). "Subthalamic GAD gene therapy in a Parkinson's disease rat model". Science. 298 (5592): 425–9. doi:10.1126/science.1074549. PMID12376704. S2CID11538987.
Demakova EV, Korobov VP, Lemkina LM (2003). "[Determination of gamma-aminobutyric acid concentration and activity of glutamate decarboxylase in blood serum of patients with multiple sclerosis]". Klin. Lab. Diagn. (4): 15–7. PMID12774663.
Flace P, Benagiano V, Lorusso L, Girolamo F, Rizzi A, Virgintino D, Roncali L, Ambrosi G (2004). "Glutamic acid decarboxylase immunoreactive large neuron types in the granular layer of the human cerebellar cortex". Anat. Embryol. 208 (1): 55–64. doi:10.1007/s00429-003-0374-x. PMID15014985. S2CID12464664.
De Luca V, Muglia P, Masellis M, Jane Dalton E, Wong GW, Kennedy JL (2004). "Polymorphisms in glutamate decarboxylase genes: analysis in schizophrenia". Psychiatr. Genet. 14 (1): 39–42. doi:10.1097/00041444-200403000-00006. PMID15091314. S2CID40410463.
Kanno K, Suzuki Y, Yamada A, Aoki Y, Kure S, Matsubara Y (2004). "Association between nonsyndromic cleft lip with or without cleft palate and the glutamic acid decarboxylase 67 gene in the Japanese population". Am. J. Med. Genet. A. 127A (1): 11–6. doi:10.1002/ajmg.a.20649. PMID15103710. S2CID30016360.
PDB gallery
2okj: The X-ray crystal structure of the 67kDa isoform of Glutamic Acid Decarboxylase (GAD67)