lactobacillus iners lactobacillus iners lactobacillus iners is a species in the genus lactobacillus. it is a gram-positive, catalase-negative, facultatively anaerobic rod-shaped bacterium with type strain ccug 28746t. lactobacillus iners is a normal inhabitant of the lower reproductive tract in healthy women. lactobacillus iners scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: lactobacillaceae genus: lactobacillus species: l. iners binomial name lactobacillus inersfalsen et al. 1999 genome the genomes of at least 15 strains have been sequenced and encode between 1,152 and 1,506 proteins. thus, this species has one of the smallest lactobacillus genomes compared to other species, such as l. crispatus, which typically encodes more than twice as many proteins.