Discovery and Assembly-Line Biosynthesis of the Lymphostin Pyrroloquinoline Alkaloid Family of mTOR Inhibitors in Salinispora Bacteria

作者：Miyanaga Akimasa; Janso Jeffrey E; McDonald Leonard; He Min; Liu Hongbo; Barbieri Laurel; Eustaquio Alessandra S; Fielding Elisha N; Carter Guy T; Jensen Paul R; Feng Xidong; Leighton Margaret; Koehn Frank E^*; Moore Bradley S

来源：Journal of the American Chemical Society, 2011, 133(34): 13311-13313.

DOI：10.1021/ja205655w

The pyrroloquinoline alkaloid family of natural products, which includes the immunosuppressant lymphostin, has long been postulated to arise from tryptophan. We now report the molecular basis of lymphostin biosynthesis in three marine Salinispora species that maintain conserved biosynthetic gene clusters harboring a hybrid nonribosomal peptide synthetase-polyketide synthase that is central to lymphostin assembly. Through a series of experiments involving gene mutations, stable isotope profiling, and natural product discovery, we report the assembly-line biosynthesis of lymphostin and nine new analogues that exhibit potent mTOR inhibitory activity.

• 出版日期2011-8-31