Methanoplanus endosymbiosus

Methanoplanus endosymbiosus is a species of archaeon, an endosymbiont of the marine sapropelic ciliate Metopus contortus. It is an irregular, disc-shaped bacterium with a diameter of 1.6–3.4 μms and type strain MC1.^[1] Its 16S DNA was sequenced in 1994, eight years after the initial isolation, and it was found to share considerable similarity with that of Methanoplanus limicola.^[2]

Methanoplanus endosymbiosus
Scientific classification
Domain:	Archaea
Kingdom:	Methanobacteriati
Phylum:	Methanobacteriota
Class:	"Methanomicrobia"
Order:	Methanomicrobiales
Family:	Methanomicrobiaceae
Genus:	Methanoplanus
Species:	M. endosymbiosus
Binomial name
Methanoplanus endosymbiosus van Bruggen et al. 1986