Abstract
Cysteine S-conjugates are formed as a result of enzymatic conjugation of xenobiotics with the tripeptide glutathione and subsequent peptidase cleavage. Enzymatic N-acetylation of cysteine S-conjugates yields the corresponding mercapturic acids, which are excreted in the urine. Thus glutathione and cysteine S-conjugate formation are associated with detoxication and excretion of xenobiotics. However, cysteine S-conjugate β-lyase, which is identical to glutamine transaminase K, catalyzes β-elimination reactions of cysteine S-conjugates, yielding a thiolate, pyruvate, and ammonia.KeywordsNuclear Magnetic ResonanceNuclear Magnetic Resonance SpectrumNuclear Magnetic Resonance SignalMercapturic AcidNuclear Magnetic Resonance TubeThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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