title: Biosynthetic Gene Cluster  of X-14952B : Obtained from Streptomyces sp.135
design: Secondary metabolite-related BCGs were identified using antismash 5.0[20],thePKS/NRPS analysis website (http://nrps. igs. umaryland. edu/) analyzed and aligned the domains about the biosynthesis of X-14952B ( vens represent for polyketide chain synthesis genes). Clustal X2 was used to align aminoacid sequence (ftp://ftp.ebi.ac.uk/pub/software/clustalw2/2.1)