microlunatus antarcticus microlunatus antarcticus microlunatus antarcticus is an ll-diaminopimelic acid-containing actinomycete. it is gram-positive, aerobic and slowly growing. microlunatus antarcticus scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: propionibacteriales family: propionibacteriaceae genus: microlunatus species: m. antarcticus binomial name microlunatus antarcticus(schumann et al. 1997) nouioui et al. 2018 type strain aa-1042dsm 11053 synonyms friedmanniella antarctica schumann et al. 1997