TAXONOMY: Bacteria -> Terrabacteria group -> Actinobacteria -> Actinobacteria -> Micrococcales -> Micrococcaceae -> Arthrobacter
Identified as constituent of skin microbiome. [PMC2746716] The majority of species exhibit a marked rod–coccus growth cycle when grown in complex media; stationary-phase cultures (generally after 2–7 d) are composed entirely or largely of coccoid cells that are 0.6–1.0 µm in diameter; some species are showing only spherical cells throughout the growth cycle. Fatty acids are predominantly iso- and anteiso-branched with C15:0 anteiso, C15:0 iso, C17:0 anteiso, and C16:0 iso predominating. Few species exhibit significant amounts of C16:0. Quinone system is composed of completely unsaturated or mono-saturated menaquinones with chain lengths of eight to ten isoprenoic units. The cell-wall peptidoglycan contains the diagnostic diamino acid lysine with several variations in the interpeptide bridge conforming to peptidoglycan type A3α or A4α.
DNA G+C content (mol%): 55–72.
Type species: Arthrobacter globiformis
This genus contains microbial species that can reside in the human gastrointestinal tract. [PMC 4262072]