streptomyces laurentii streptomyces laurentii streptomyces laurentii is a bacterium species from the genus of streptomyces which has been isolated from soil. streptomyces laurentii produces thiostrepton. streptomyces laurentii scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: streptomycetales family: streptomycetaceae genus: streptomyces species: s. laurentii binomial name streptomyces laurentiitrejo et al. 1979 (approved lists 1980) type strain atcc 31255, bcrc 16804, ccrc 16804, cgmcc 4.1919, dsm 41684, ifo 15422, imet 43866, jcm 5063, kcc s-1063, lmg 19959, ms 1477, nbrc 15422, pcm 2368, sc 9895