mycolicibacterium aurum mycolicibacterium aurum mycolicibacterium aurum is a species of the phylum actinomycetota (gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus mycolicibacterium. mycolicibacterium aurum scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: mycobacteriales family: mycobacteriaceae genus: mycolicibacterium species: m. aurum binomial name mycolicibacterium aurum(tsukamura 1966) gupta et al. 2018 type strain atcc 23366ccug 37666cip 104465dsm 43999hambi 2275jcm 6366lmg 19255nctc 10437nrrl b-4037 synonyms mycobacterium aurum tsukamura 1966 (approved lists 1980) the species is an acid fast, gram positive bacteria that forms long chains. though related to mycobacterium tuberculosis, it does not cause tuberculosis.