Strain EL1T was isolated from a sinus sample of an 85-year-old man with chronic refractory sinusitis complicating ethmoidal adenocarcinoma. We studied its phenotypic and genomic characteristics. This is a Gram stain–positive, anaerobic and microaerophilic coccus. Cells are catalase negative, nonmotile and non–spore forming. The major fatty acids are saturated hexadecanoic acid (34%), unsaturated 9-octadecenoic acid (32%) and 9.12-octadecadienoic acid (21%). The 1.86 Mb long genome exhibits a 29.9% G+C content and contains 1750 protein-coding and 43 RNA genes. On the basis of these data, we propose the creation of the new human-associated bacterial species Peptoniphilus lacydonensis sp. nov. Keywords: Chronic refractory sinusitis, culturomics, genome, Peptoniphilus lacydonensis, sinus adenocarcinoma, taxonomy
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