ornithinimicrobium pekingense ornithinimicrobium pekingense ornithinimicrobium pekingense is a gram-positive bacterium species from the genus ornithinimicrobium which has been isolated from activated sludge. ornithinimicrobium pekingense scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: intrasporangiaceae genus: ornithinimicrobium species: o. pekingense binomial name ornithinimicrobium pekingenseliu et al. 2008 type strain cgmcc 1.5362jcm 14001lw6