streptomyces koyangensis streptomyces koyangensis streptomyces koyangensis is a bacterium species from the genus of streptomyces which has been isolated from radish soil in koyang in korea. streptomyces koyangensis produces antifungal 4-phenyl-3-butenoic acid. streptomyces koyangensis scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: streptomycetales family: streptomycetaceae genus: streptomyces species: s. koyangensis binomial name streptomyces koyangensislee et al. 2005 type strain dsm 41864, jcm 14915, kccm 10555, nbrc 100598, vk-a60