期刊
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
卷 71, 期 7, 页码 4149-4152出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.71.7.4149-4152.2005
关键词
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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.
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