From Wikipedia, the free encyclopedia
Glutathione hydrolase (
EC
3.4.19.13 , glutathionase , GGT , gamma-glutamyltranspeptidase ) is an
enzyme .
[1]
[2]
[3]
[4]
[5]
[6]
[7] This enzyme
catalyses the following
chemical reaction
glutathione + H2 O
⇌
{\displaystyle \rightleftharpoons }
L-cysteinylglycine + L-
glutamate
This protein also acts as enzyme
EC 2.3.2.2 (gamma-glutamyltransferase).
References
^ Hanigan MH, Ricketts WA (June 1993). "Extracellular glutathione is a source of cysteine for cells that express gamma-glutamyl transpeptidase". Biochemistry . 32 (24): 6302–6.
doi :
10.1021/bi00075a026 .
PMID
8099811 .
^ Suzuki H, Kumagai H (November 2002).
"Autocatalytic processing of gamma-glutamyltranspeptidase" . The Journal of Biological Chemistry . 277 (45): 43536–43.
doi :
10.1074/jbc.m207680200 .
PMID
12207027 .
^ Okada T, Suzuki H, Wada K, Kumagai H, Fukuyama K (April 2006).
"Crystal structures of gamma-glutamyltranspeptidase from Escherichia coli, a key enzyme in glutathione metabolism, and its reaction intermediate" . Proceedings of the National Academy of Sciences of the United States of America . 103 (17): 6471–6.
Bibcode :
2006PNAS..103.6471O .
doi :
10.1073/pnas.0511020103 .
PMC
1458908 .
PMID
16618936 .
^ Boanca G, Sand A, Okada T, Suzuki H, Kumagai H, Fukuyama K, Barycki JJ (January 2007).
"Autoprocessing of Helicobacter pylori gamma-glutamyltranspeptidase leads to the formation of a threonine-threonine catalytic dyad" . The Journal of Biological Chemistry . 282 (1): 534–41.
doi :
10.1074/jbc.m607694200 .
PMID
17107958 .
^ Okada T, Suzuki H, Wada K, Kumagai H, Fukuyama K (January 2007).
"Crystal structure of the gamma-glutamyltranspeptidase precursor protein from Escherichia coli. Structural changes upon autocatalytic processing and implications for the maturation mechanism" . The Journal of Biological Chemistry . 282 (4): 2433–9.
doi :
10.1074/jbc.m607490200 .
PMID
17135273 .
^ Wickham S, West MB, Cook PF, Hanigan MH (July 2011).
"Gamma-glutamyl compounds: substrate specificity of gamma-glutamyl transpeptidase enzymes" . Analytical Biochemistry . 414 (2): 208–14.
doi :
10.1016/j.ab.2011.03.026 .
PMC
3099546 .
PMID
21447318 .
^ Carter BZ, Wiseman AL, Orkiszewski R, Ballard KD, Ou CN, Lieberman MW (May 1997).
"Metabolism of leukotriene C4 in gamma-glutamyl transpeptidase-deficient mice" . The Journal of Biological Chemistry . 272 (19): 12305–10.
doi :
10.1074/jbc.272.19.12305 .
PMID
9139674 .
External links
Activity Regulation Classification Kinetics Types