pseudoalteromonas peptidolytica pseudoalteromonas peptidolytica pseudoalteromonas peptidolytica is a marine bacterium isolated from the sea surrounding yamato island in the sea of japan. pseudoalteromonas peptidolytica scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: pseudoalteromonadaceae genus: pseudoalteromonas binomial name pseudoalteromonas peptidolyticavenkateswaran and dohmoto 2000