streptomyces achromogenes streptomyces achromogenes streptomyces achromogenes is a species of gram-positive bacterium that belongs in the genus streptomyces. s. achromogenes can be grown at 28 °c in a medium of yeast and malt extract with glucose. streptomyces achromogenes scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: streptomycetales family: streptomycetaceae genus: streptomyces species: s. achromogenes binomial name streptomyces achromogenesokami and umezawa 1953 (approved lists 1980) streptomyces achromogenes is the source of the restriction enzymes saci and sacii, as well as the antibiotic compound sarcidin. a strain of the bacterium called s. achromogenes var. streptozoticus was the original source of the pancreatic cancer drug streptozotocin.