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Sanchez JF, Chiang YM, Wang CCC. Diversity of Polyketide Synthases Found in the Aspergillus and Streptomyces Genomes. Mol Pharm 2008; 5:226-33. [DOI: 10.1021/mp700139t] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- James F. Sanchez
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, 1985 Zonal Avenue, Los Angeles, California 90089, Graduate Institute of Pharmaceutical Science, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan, ROC, and Department of Chemistry, College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, California 90089
| | - Yi-Ming Chiang
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, 1985 Zonal Avenue, Los Angeles, California 90089, Graduate Institute of Pharmaceutical Science, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan, ROC, and Department of Chemistry, College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, California 90089
| | - Clay C. C. Wang
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, 1985 Zonal Avenue, Los Angeles, California 90089, Graduate Institute of Pharmaceutical Science, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan, ROC, and Department of Chemistry, College of Letters, Arts, and Sciences, University of Southern California, Los Angeles, California 90089
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König A, Schwecke T, Molnar I, Böhm GA, Lowden PA, Staunton J, Leadlay PF. The pipecolate-incorporating enzyme for the biosynthesis of the immunosuppressant rapamycin--nucleotide sequence analysis, disruption and heterologous expression of rapP from Streptomyces hygroscopicus. EUROPEAN JOURNAL OF BIOCHEMISTRY 1997; 247:526-34. [PMID: 9266694 DOI: 10.1111/j.1432-1033.1997.00526.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
An open reading frame (rapP) encoding the putative pipecolate-incorporating enzyme (PIE) has been identified in the gene cluster for the biosynthesis of rapamycin in Streptomyces hygroscopicus. Conserved amino acid sequence motifs for ATP binding, ATP hydrolysis, adenylate formation, and 4'-phosphopantetheine attachment were identified by sequence comparison with authentic peptide synthetases. Disruption of rapP by phage insertion abolished rapamycin production in S. hygroscopicus, and the production of the antibiotic was specifically restored upon loss of the inserted phage by a second recombination event. rapP was expressed in both Escherichia coli and Streptomyces coelicolor, and recombinant PIE was purified to homogeneity from both hosts. Although low-level incorporation of [14C]beta-alanine into recombinant PIE isolated from E. coli was detected, formation of the covalent acylenzyme intermediate could only be shown with the PIE from S. coelicolor, suggesting that while the recombinant PIE from S. coelicolor was phosphopantetheinylated, only a minor proportion of the recombinant enzyme from E. coli was post-translationally modified.
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Affiliation(s)
- A König
- Department of Biochemistry and Cambridge Centre for Molecular Recognition, University of Cambridge, United Kingdom
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