About: Tylactone synthase

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Tylactone synthase or TYLS is a Type 1 polyketide synthase. TYLS is found in strains of Streptomyces fradiae and responsible for the synthesis of the macrolide ring, tylactone, the precursor of an antibiotic, tylosin. TYLS is composed of five large multi-functional proteins, TylGI-V. Each protein contains either one or two modules. Each module consists of a minimum of a Ketosynthase (KS), an Acyltransferase (AT), and an Acyl carrier protein (ACP) but may also contain a Ketoreductase (KR), Dehydrotase (DH), and Enoyl Reductase (ER) for additional reduction reactions. The domains of TYLS have similar activity domains to those found in other Type I polyketide synthase such as 6-Deoxyerythronolide B synthase (DEBS). The TYLS system also contains a loading module consisting of a ketosynthase‐li

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  • Tylactone synthase or TYLS is a Type 1 polyketide synthase. TYLS is found in strains of Streptomyces fradiae and responsible for the synthesis of the macrolide ring, tylactone, the precursor of an antibiotic, tylosin. TYLS is composed of five large multi-functional proteins, TylGI-V. Each protein contains either one or two modules. Each module consists of a minimum of a Ketosynthase (KS), an Acyltransferase (AT), and an Acyl carrier protein (ACP) but may also contain a Ketoreductase (KR), Dehydrotase (DH), and Enoyl Reductase (ER) for additional reduction reactions. The domains of TYLS have similar activity domains to those found in other Type I polyketide synthase such as 6-Deoxyerythronolide B synthase (DEBS). The TYLS system also contains a loading module consisting of a ketosynthase‐like decarboxylase domain, an acyltransferase, and acyl carrier protein. The terminal Thioesterase terminates tylactone synthesis by cyclizing the macrolide ring. After the TYLS completes tylactone synthesis, the tylactone molecule is modified by oxidation at C-20 and C-23 and glycosylation of mycaminose, mycinose, and mycarose to produce tylosin. (en)
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  • Tylactone synthase or TYLS is a Type 1 polyketide synthase. TYLS is found in strains of Streptomyces fradiae and responsible for the synthesis of the macrolide ring, tylactone, the precursor of an antibiotic, tylosin. TYLS is composed of five large multi-functional proteins, TylGI-V. Each protein contains either one or two modules. Each module consists of a minimum of a Ketosynthase (KS), an Acyltransferase (AT), and an Acyl carrier protein (ACP) but may also contain a Ketoreductase (KR), Dehydrotase (DH), and Enoyl Reductase (ER) for additional reduction reactions. The domains of TYLS have similar activity domains to those found in other Type I polyketide synthase such as 6-Deoxyerythronolide B synthase (DEBS). The TYLS system also contains a loading module consisting of a ketosynthase‐li (en)
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  • Tylactone synthase (en)
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