thiomonas arsenitoxydans thiomonas arsenitoxydans thiomonas arsenitoxydans is a gram-negative, moderately acidophilic, non-spore-forming, rod-shaped, motile bacterium from the genus thiomonas, which has the ability to use arsenite as an energy source by oxidizing it. thiomonas arsenitoxydans scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: comamonadaceae genus: thiomonas species: t. arsenitoxydans binomial name thiomonas arsenitoxydansslyemi et al. 2011 type strain cip 110005, dsm 22701