psychrobacter sanguinis psychrobacter sanguinis psychrobacter sanguinis is a gram-negative, strictly aerobic bacterium of the genus psychrobacter, which was isolated from human blood in new york. psychrobacter sanguinis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: moraxellaceae genus: psychrobacter species: p. sanguinis binomial name psychrobacter sanguiniswirth et al. 2012 type strain ccug 59771, dsm 23635, strain 13983