Subcellular localization and possible functions of gamma-glutamyltransferase in the radish (Raphanus sativus L.) plant.

Biosci Biotechnol Biochem

Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan.

Published: July 2006

Previously we reported the purification of soluble gamma-glutamyltransferases (GGTs) from radish cotyledon. Subcellular fractionation of radish cells revealed that soluble GGT is a vacuolar enzyme. Acivicin, a GGT inhibitor, mediated the in vivo catabolism inhibition of the glutathione S-conjugate generated from endogenous glutathione and exogenously supplied monochlorobimane. Thus soluble GGT is possibly involved in the catabolism of glutathione S-conjugates.

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http://dx.doi.org/10.1271/bbb.60027DOI Listing

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