Functional Cross-talk between Fatty Acid Synthesis and Nonribosomal Peptide Synthesis in Quinoxaline Antibiotic-producing Streptomycetes
نویسندگان
چکیده
منابع مشابه
Functional cross-talk between fatty acid synthesis and nonribosomal peptide synthesis in quinoxaline antibiotic-producing streptomycetes.
Quinoxaline antibiotics are chromopeptide lactones embracing the two families of triostins and quinomycins, each having characteristic sulfur-containing cross-bridges. Interest in these compounds stems from their antineoplastic activities and their specific binding to DNA via bifunctional intercalation of the twin chromophores represented by quinoxaline-2-carboxylic acid (QA). Enzymatic analysi...
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Nonribosomal peptide synthesis is achieved in prokaryotes and lower eukaryotes by the thiotemplate function of large, modular enzyme complexes known collectively as peptide synthetases. These and other multifunctional enzyme complexes, such as polyketide synthases, are of interest due to their use in unnatural-product or combinatorial biosynthesis (R. McDaniel, S. Ebert-Khosla, D. A. Hopwood, a...
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Temperature-sensitive RNA polymerase III (rpc160-112 and rpc160-270) mutants were analyzed for the synthesis of tRNAs and rRNAs in vivo, using a double-isotopic-labeling technique in which cells are pulse-labeled with [(33)P]orthophosphate and coextracted with [(3)H]uracil-labeled wild-type cells. Individual RNA species were monitored by Northern blot hybridization or amplified by reverse trans...
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In fungi, nonribosomal peptide synthetases (NRP synthetases) are large multi-functional enzymes containing adenylation, thiolation (or peptidyl carrier protein, PCP) and condensation domains. These enzymes are often encoded within gene clusters. Multiple NRP synthetase ORFs have also been identified in fungi (14 in Aspergillus fumigatus). LeaA, a methyltransferase, is involved in secondary meta...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2005
ISSN: 0021-9258
DOI: 10.1074/jbc.m411026200