dolosigranulum pigrum dolosigranulum pigrum dolosigranulum pigrum is a gram-positive bacterium from the genus of dolosigranulum. dolosigranulum pigrum can cause infections in the upper respiratory tract and nosocomial pneumonia and sepsis. the metabolism of this organism has been reconstructed and is available in the form of a genome-scale metabolic model. dolosigranulum pigrum scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: carnobacteriaceae genus: dolosigranulum species: d. pigrum binomial name dolosigranulum pigrumaguirre et al. 1994 type strain atcc 51524, ccug 33392, cip 104051, ifo 15550, lmg 15126, nbrc 15550, ncfb 2975, ncimb 702975, r91/1468