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ONTOLOGY REPORT - ANNOTATIONS


Term:polyketide synthase activity
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Accession:GO:0016218 term browser browse the term
Definition:Catalysis of a multistep reaction that produce polyketides through decarboxylative condensation of carboxylic acids. The key chain-building reaction, a C-N bond-forming reaction, involves the generation of the characteristic peptide bond by nucleophilic attack of the amino group of an amino-acyl donor unit covalently bound to a downstream peptidyl carrier protein module (amino acyl-S-PCP) on the acyl group of an upstream electrophilic acyl- or peptidyl acyl-S-PCP chain, catalyzed by a condensation (C) domain. Supplementing these core chain-elongation domains are variable numbers of auxiliary domains that are responsible for modification of the growing polypeptide chain by a small set of iterated reactions including epimerization, N-methylation, and heterocyclization.
Synonyms:related_synonym: PKS activity



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  molecular_function 20811
    catalytic activity 6119
      polyketide synthase activity 0
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