Abstract
Two novel cinnamoyl-containing nonribosomal peptides (CCNPs) grisgenomycin A and B were identified in Streptomyces griseus NBRC 13350 (CGMCC 4.5718) and ATCC 12475, through genome mining using conserved adjacent LuxR family regulators as probes and activators. Notably, grisgenomycins represent a new group of bicyclic decapeptides featuring an unprecedented C-C bond between the tryptophan carbocycle and the cinnamoyl group. A plausible biosynthetic pathway for grisgenomycins was deduced by a bioinformatics analysis. Grisgenomycins exhibited activity against human coronaviruses at the micromolar level.
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