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Characterization of the biosynthetic gene cluster for cryptic phthoxazolin a in streptomyces avermitilis
Suroto D.A. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Characterization of the biosynthetic gene cluster for cryptic phthoxazolin a in streptomyces avermitilis
ผู้แต่ง / หัวหน้าโครงการ (EN): Suroto D.A.
บทคัดย่อ (EN): Phthoxazolin A, an oxazole-containing polyketide, has a broad spectrum of anti-oomycete activity and herbicidal activity. We recently identified phthoxazolin A as a cryptic metabolite of Streptomyces avermitilis that produces the important anthelmintic agent avermectin. Even though genome data of S. avermitilis is publicly available, no plausible biosynthetic gene cluster for phthoxazolin A is apparent in the sequence data. Here, we identified and characterized the phthoxazolin A (ptx) biosynthetic gene cluster through genome sequencing, comparative genomic analysis, and gene disruption. Sequence analysis uncovered that the putative ptx biosynthetic genes are laid on an extra genomic region that is not found in the public database, and 8 open reading frames in the extra genomic region could be assigned roles in the biosynthesis of the oxazole ring, triene polyketide and carbamoyl moieties. Disruption of the ptxA gene encoding a discrete acyltransferase resulted in a complete loss of phthoxazolin A production, confirming that the trans-AT type I PKS system is responsible for the phthoxazolin A biosynthesis. Based on the predicted functional domains in the ptx assembly line, we propose the biosynthetic pathway of phthoxazolin A. © 2018 Suroto et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-85040347904&doi=10.1371%2fjournal.pone.0190973&partnerID=40&md5=fc28c384f26a5afa49585984ba5b3747
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Streptomyces
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Characterization of the biosynthetic gene cluster for cryptic phthoxazolin a in streptomyces avermitilis
Suroto D.A.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
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