muribacter muribacter muribacter is a genus of bacteria from the class of pasteurellaceae with one known species (muribacter muris). muribacter muris has been isolated from a mouse. muribacter scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pasteurellales family: pasteurellaceae genus: muribacternicklas et al. 2015 type species muribacter muris species m. muris