MOESM1 of Molecular genetics of naringenin biosynthesis, a typical plant secondary metabolite produced by Streptomyces clavuligerus

Additional file 1: Figure S1. A) Conserved sequences around the key amino acids located in chalcone synthases active center. The numbers given in the sequence correspond to S. clavuligerus Ncs, where the key amino acids are Cys138, Phe188, His270 and Asn303. B) Phylogenetic three of plant and Streptomyces chalcone synthases. The origin of the sequences used is indicated at the right side. Numbers at the far right side correspond to the genetic distance index.