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Cloning and characterization of the goadsporin biosynthetic gene cluster from Streptomyces sp. TP-A0584

Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan

Correspondence
Hiroyasu Onaka
onaka{at}pu-toyama.ac.jp

The biosynthetic gene cluster of goadsporin, a polypeptide antibiotic containing thiazole and oxazole rings, was cloned from Streptomyces sp. TP-A0584. The cluster contains a structural gene, godA, and nine god (goadsporin) genes involved in post-translational modification, immunity and transcriptional regulation. Although the gene organization is similar to typical bacteriocin biosynthetic gene clusters, each goadsporin biosynthetic gene shows low homology to these genes. Goadsporin biosynthesis is initiated by the translation of godA, and the subsequent cyclization, dehydration and acetylation are probably catalysed by godD, godE, godF, godG and godH gene products. godI shows high similarity to the 54 kDa subunit of the signal recognition particle and plays an important role in goadsporin immunity. Furthermore, four goadsporin analogues were produced by site-directed mutagenesis of godA, suggesting that this biosynthesis machinery is used for the heterocyclization of peptides.

The GenBank/EMBL/DDBJ accession number for the sequence reported in this paper is AB205012.

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