Methylomonas scandinavica is a species of Gram-negative gammaproteobacteria found in deep igneous rock ground water in Sweden.
M. scandinavica is classified as having a type I internal membrane that contains numerous disc-shaped vesicles distributed throughout the organism.
The DNA-DNA hybridization technique comparing the isolated Methylomonas species in vitro with other Type I methanotrophs; values did not exceed 65%.
Following incorporation of the methane molecule, the organism uses an incomplete TCA cycle to generate reducing power for other portions of central metabolism.
[1] Since M. scandinavica dwells deep within igneous rock aquifers, they may play a role in subsurface ecology.