Project description:A draft genome sequence for a urinary isolate of Nosocomiicoccus ampullae (UMB0853) was investigated. The size of the genome was 1,578,043 bp, with an observed G+C content of 36.1%. Annotation revealed 10 rRNA sequences, 40 tRNA genes, and 1,532 protein-coding sequences. Genome coverage was 727× and consisted of 32 contigs, with an N50 of 109,831 bp.
Project description:Nosocomiicoccus species are infrequently isolated from clinical specimens and their clinical significance has not been evaluated. We retrospectively reviewed five cases in which Nosocomiicoccus ampullae was identified in a single blood culture set during routine culture. All patients were admitted for altered mental status and had several comorbidities. Patients improved without antibiotic therapy directed to N. ampullae or their condition declined due to underlying conditions, and N. ampullae isolation was not considered clinically significant in any case. Matrix-assisted laser desorption/ionization-time of flight mass spectrometry and/or 16S rRNA gene Sanger sequencing allowed genus identification, but whole genome sequencing was required for accurate species identification. All strains were susceptible to penicillin, oxacillin, cefoxitin, tetracycline, doxycycline, daptomycin, minocycline, clindamycin, nitrofurantoin, vancomycin, and linezolid; they showed high-level resistance to trimethoprim-sulfamethoxazole and erythromycin, and inducible resistance to clindamycin, applying Clinical and Laboratory Standards Institute Staphylococcus spp. guidelines with an extended incubation. They frequently carry genes associated with macrolide resistance. In conclusion, N. ampullae appears to have low pathogenicity and most probably represents a contaminant when isolated from a single blood culture set.IMPORTANCENosocomiicoccus species are recently described as members of the Staphylococcaceae family. With their inclusion in commercial matrix-assisted laser desorption/ionization-time of flight mass spectrometry databases, Nosocomiicoccus species can now be identified when Gram-positive cocci in clusters are detected in positive blood cultures. However, their clinical significance is not known, making it difficult for the clinical microbiology laboratory to decide the extent of work-up. Based on our study, Nosocomiicoccus species demonstrate low pathogenicity and opportunistic potential. If isolated from a single blood culture set, limited work-up should be performed to an extent similar to other possible blood culture contaminants.
Project description:Investigation of whole genome gene expression level changes in Lactococcus lactis KCTC 3769T,L. raffinolactis DSM 20443T, L. plantarum DSM 20686T, L. fujiensis JSM 16395T, L. garvieae KCTC 3772T, L. piscium DSM 6634T and L. chungangensis CAU 28T . This proves that transcriptional profiling can facilitate in elucidating the genetic distance between closely related strains.
Project description:Here, we present the circular and complete genome sequences of the Nosocomiicoccus ampullae isolate 19-00310 and type strain DSM 19163. To our knowledge, these represent the first complete, circular chromosomes in the entire genus. Sequencing of a growth-adapted mutant suggests iron availability as a factor for growth improvement.