Title : S-glutathionylation enhances human cystathionine β-synthase activity under oxidative stress conditions.

Pub. Date : 2015 Feb 10

PMID : 24893130






4 Functional Relationships(s)
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1 AIMS: Cystathionine beta-synthase (CBS) catalyzes the first and rate-limiting step in the two-step trans-sulfuration pathway that converts homocysteine to cysteine. Cysteine cystathionine beta-synthase Homo sapiens
2 AIMS: Cystathionine beta-synthase (CBS) catalyzes the first and rate-limiting step in the two-step trans-sulfuration pathway that converts homocysteine to cysteine. Cysteine cystathionine beta-synthase Homo sapiens
3 INNOVATION: Collectively, our results reveal a novel post-translational modification of CBS, that is, glutathionylation, which functions as an allosteric activator under oxidative stress conditions permitting enhanced synthesis of both cysteine and H2S. Cysteine cystathionine beta-synthase Homo sapiens
4 CONCLUSIONS: Our study elucidates a molecular mechanism for increased cysteine and therefore glutathione, synthesis via glutathionylation of CBS. Cysteine cystathionine beta-synthase Homo sapiens