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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Identification and functional analysis of Escherichia coli cysteine desulfhydrases.

In Escherichia coli, three additional proteins having L-cysteine desulfhydrase activity were identified as O-acetylserine sulfhydrylase-A, O-acetylserine sulfhydrylase-B, and MalY protein, in addition to tryptophanase and cystathionine beta-lyase, which have been reported previously. The gene disruption for each protein was significantly effective for overproduction of L-cysteine and L-cystine. Growth phenotype and transcriptional analyses suggest that tryptophanase contributes primarily to L-cysteine degradation.[1]


  1. Identification and functional analysis of Escherichia coli cysteine desulfhydrases. Awano, N., Wada, M., Mori, H., Nakamori, S., Takagi, H. Appl. Environ. Microbiol. (2005) [Pubmed]
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