Glutathione-binding site of a Bombyx mori theta-class glutathione transferase

M. D.Tofazzal Hossain, Naotaka Yamada, Kohji Yamamoto

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


The glutathione transferase (GST) superfamily plays key roles in the detoxification of various xenobiotics. Here, we report the isolation and characterization of a silkworm protein belonging to a previously reported theta-class GST family. The enzyme (bmGSTT) catalyzes the reaction of glutathione with 1-chloro-2,4-dinitrobenzene, 1,2-epoxy-3-(4-nitrophenoxy)- propane, and 4-nitrophenethyl bromide. Mutagenesis of highly conserved residues in the catalytic site revealed that Glu66 and Ser67 are important for enzymatic function. These results provide insights into the catalysis of glutathione conjugation in silkworm by bmGSTT and into the metabolism of exogenous chemical agents.

Original languageEnglish
Article numbere97740
JournalPloS one
Issue number5
Publication statusPublished - May 21 2014

All Science Journal Classification (ASJC) codes

  • General


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