Biosynthesis of (±)-Differolide, an Antioxidant Isolate from Streptomyces qaidamensis S10T

Abstract

Streptomyces from unexplored or underexplored environments may be an essential source of discoveries of bioactive molecules. One such example is Streptomyces qaidamensis S10T, which was isolated from a sand sample collected in Qaidam Basin, Qinghai Province, China. Here, we report on (±)-differolide, an antioxidant isolated from S. qaidamensis, and verified with scavenging experiments on 2,2-diphenyl-1-picrylhydrazyl (DPPH). The biosynthetic gene cluster responsible for synthesizing the compound was also identified using comparative genomic methods. These results provide a basis for further study of the biological activities of (±)-differolide, which also make it possible to develop as an antioxidant medicine.