Early Cephamycin Biosynthetic Genes Are Expressed from a Polycistronic Transcript in Streptomyces clavuligerus
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چکیده
منابع مشابه
Studies on the Biosynthetic Pathways of Clavulanic Acid and Cephamycin C in Streptomyces clavuligerus
Mackenzie, A., Studies on the Biosynthetic Pathways of Clavulanic Acid and Cephamycin C in Streptomyces clavuligerus. Doctoral dissertation. ISSN 1652-6880 ISBN 978-91-576-7318-3 The discovery of penicillin, a β-lactam antibiotic, changed the way humans thought about infectious disease. Unfortunately, the widespread use of antibiotics has lead to a concomitant increase in bacterial resistance t...
متن کاملAlanylclavam biosynthetic genes are clustered together with one group of clavulanic acid biosynthetic genes in Streptomyces clavuligerus.
Streptomyces clavuligerus produces at least five different clavam metabolites, including clavulanic acid and the methionine antimetabolite, alanylclavam. In vitro transposon mutagenesis was used to analyze a 13-kb region upstream of the known paralogue gene cluster. The paralogue cluster includes one group of clavulanic acid biosynthetic genes in S. clavuligerus. Twelve open reading frames (ORF...
متن کاملpcd mutants of Streptomyces clavuligerus still produce cephamycin C.
Biosynthesis of cephamycin C in Streptomyces clavuligerus involves the initial conversion of lysine to alpha-aminoadipic acid. Lysine-6-aminotransferase and piperideine-6-carboxylate dehydrogenase carry out this two-step reaction, and genes encoding each of these enzymes are found within the cephamycin C gene cluster. However, while mutation of the lat gene causes complete loss of cephamycin pr...
متن کاملExpression of ccaR, encoding the positive activator of cephamycin C and clavulanic acid production in Streptomyces clavuligerus, is dependent on bldG.
In Streptomyces coelicolor, bldG encodes a putative anti-anti-sigma factor that regulates both aerial hypha formation and antibiotic production, and a downstream transcriptionally linked open reading frame (orf3) encodes a putative anti-sigma factor protein. A cloned DNA fragment from Streptomyces clavuligerus contained an open reading frame that encoded a protein showing 92% identity to the S....
متن کاملDissociation of cephamycin C and clavulanic acid biosynthesis by 1,3-diaminopropane in Streptomyces clavuligerus.
Streptomyces clavuligerus produces simultaneously cephamycin C (CephC) and clavulanic acid (CA). Adding 1,3-diaminopropane to culture medium stimulates production of beta-lactam antibiotics. However, there are no studies on the influence of this diamine on coordinated production of CephC and CA. This study indicates that 1,3-diaminopropane can dissociate CephC and CA productions. Results indica...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2000
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.182.2.348-356.2000