title: Cloning of the staurosporine biosynthetic gene cluster from Streptomyces sp. TP-A0274 and its heterologous expression in Streptomyces lividans.
abstract: Staurosporine is a representative member of indolocarbazole antibiotics. The entire staurosporine biosynthetic and regulatory gene cluster spanning 20-kb was cloned from Streptomyces sp. TP-A0274 and sequenced. The gene cluster consists of 14 ORFs and the amino acid sequence homology search revealed that it contains three genes, staO, staD, and staP, coding for the enzymes involved in the indolocarbazole aglycone biosynthesis, two genes, staG and staN, for the bond formation between the aglycone and deoxysugar, eight genes, staA, staB, staE, staJ, staI, staK, staMA, and staMB, for the deoxysugar biosynthesis and one gene, staR is a transcriptional regulator. Heterologous gene expression of a 38-kb fragment containing a complete set of the biosynthetic genes for staurosporine cloned into pTOYAMAcos confirmed its role in staurosporine biosynthesis. Moreover, the distribution of the gene for chromopyrrolic acid synthase, the key enzyme for the biosynthesis of indolocarbazole aglycone, in actinomycetes was investigated, and rebD homologs were shown to exist only in the strains producing indolocarbazole antibiotics.
authors.affiliation: Biotechnology Research Center, Toyama Prefectural University, Kosugi, Toyama 939-0398, Japan. onaka@pu-toyama.ac.jp
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Onaka
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Taniguchi
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Igarashi
authors.forename: Tamotsu
authors.initials: T
authors.lastname: Furumai
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism*; D003001:Cloning, Molecular; D015964:Gene Expression Regulation, Bacterial; D008969:Molecular Sequence Data; D005810:Multigene Family; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism; D019311:Staurosporine / Q000096:biosynthesis*; D013302:Streptomyces / Q000235:genetics* / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D011994:Recombinant Proteins; C472175:rebD protein, Streptomyces; D019311:Staurosporine