RT Journal Article SR Electronic(1) A1 Shkoporov, Andrei N. A1 Chaplin, Andrei V. A1 Shcherbakova, Victoria A. A1 Suzina, Natalia E. A1 Kafarskaia, Lyudmila I. A1 Bozhenko, Vladimir K. A1 Efimov, Boris A.YR 2016 T1 Ruthenibacterium lactatiformans gen. nov., sp. nov., an anaerobic, lactate-producing member of the family Ruminococcaceae isolated from human faeces JF International Journal of Systematic and Evolutionary Microbiology, VO 66 IS 8 SP 3041 OP 3049 DO https://doi.org/10.1099/ijsem.0.001143 PB Microbiology Society, SN 1466-5034, AB Two novel strains of Gram-stain-negative, rod-shaped, obligately anaerobic, non-spore-forming, non-motile bacteria were isolated from the faeces of healthy human subjects. The strains, designated as 585-1T and 668, were characterized by mesophilic fermentative metabolism, production of d-lactic acid, succinic acid and acetic acid as end products of d-glucose fermentation, prevalence of C18 : 1 ω9, C18 : 1 ω9 aldehyde, C16 : 0 and C16 : 1 ω7c fatty acids, presence of glycine, glutamic acid, lysine, alanine and aspartic acid in the petidoglycan peptide moiety and lack of respiratory quinones. Whole genome sequencing revealed the DNA G+C content was 56.4–56.6 mol%. The complete 16S rRNA gene sequences of the two strains shared 91.7/91.6 % similarity with Anaerofilum pentosovorans FaeT, 91.3/91.2 % with Gemmiger formicilis ATCC 27749T and 88.9/88.8 % with Faecalibacterium prausnitzii ATCC 27768T. On the basis of chemotaxonomic and genomic properties it was concluded that the strains represent a novel species in a new genus within the family Ruminococcaceae , for which the name Ruthenibacterium lactatiformans gen. nov., sp. nov. is proposed. The type strain of Ruthenibacterium lactatiformans is 585-1T (=DSM 100348T=VKM B-2901T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.001143