sphingomonas japonica sphingomonas japonica sphingomonas japonica is a bacterium from the genus of sphingomonas which has been isolated from the crab paralithodes camtschaticus in the peter the great bay in russia. sphingomonas japonica scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: sphingomonadaceae genus: sphingomonas binomial name sphingomonas japonicaromanenko et al. 2009 type strain cip 110395, jcm 15438, kc7, kmm 3038, nric 0738