Gamma-glutamyltransferase 5 is an enzyme that in humans is encoded by the GGT5gene.[1][2][3][4]
Gamma-glutamyltransferase-like activity 1 (GGTLA1) is a member of a gene family with at least 4 members (GGTLA1, GGTLA2, GGTLA3 and GGTLA4). The enzyme encoded by GGTLA1 is related to, but distinct from, gamma-glutamyl transpeptidase (GGT). The GGTLA1 enzyme consists of a heavy and a light chain and is able to hydrolyze the gamma-glutamyl moiety of glutathione. It converts leukotriene C4 to leukotriene D4, however, it doesn't convert synthetic substrates that are commonly used to assay GGT. Its amino acid sequence shows an overall similarity of 39.5% with human GGT.[4]
↑Morris C, Courtay C, Geurts van Kessel A, ten Hoeve J, Heisterkamp N, Groffen J (Apr 1993). "Localization of a gamma-glutamyl-transferase-related gene family on chromosome 22". Hum Genet. 91 (1): 31–6. doi:10.1007/bf00230218. PMID8095916.
↑Heisterkamp N, Groffen J, Warburton D, Sneddon TP (Apr 2008). "The human gamma-glutamyltransferase gene family". Hum Genet. 123 (4): 321–32. doi:10.1007/s00439-008-0487-7. PMID18357469.
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Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID8125298.