AI Article Synopsis
- CDC group non-oxidizer (NO)-1, named in 1993, consists of Gram-negative bacilli mostly found in human wound infections after animal bites, but it's seldom mentioned in recent studies.* -
- The CDC NO-1 strains are characterized as non-motile, oxidase-negative, nitrate-reducing bacilli, with a unique fatty acid profile and a previously identified 16S rRNA gene sequence closely related to oral microbiomes of dogs and cats.* -
- This research identified 11 isolates, revealing distinct genera within CDC NO-1 through genome sequencing, with the larger CDC group NO-1 genomes (3.08 to 3.38 MB) differing from the smaller CDC group
Article Abstract
CDC group non-oxidizer (NO)-1 is the provisional name designated in 1993 for phenotypically similar, Gram-stain-negative bacilli recovered primarily from human wound infections after animal bites. Otherwise, this group has been rarely alluded to in recent literature. CDC NO-1 strains had been described as non-motile, asaccharolytic, oxidase-negative, catalase-positive, nitrate-reducing bacilli, with predominate cellular fatty acids of C 3OH, C ω7, C and C ω7. Only one 16S rRNA gene sequence deposited in NCBI (accession no. DQ054782) had been identified as CDC group NO-1 prior to this study. That sequence was closely related (>99 % identity) to sequences called ' species' from canine (JN713339) and feline (KM461961) oral microbiomes as well as to sequences derived from human strains (this study). Some of the 11 isolates delineated here were recovered from human wound infections subsequent to cat/dog bites; others were from wounds (links to animal bites not described) and two were recovered from dialysates. After 16S rRNA and whole genome sequencing, the isolates were found to be most closely related to each other but fell into two distinct genera assignable to the family , provisionally discussed here as CDC group NO-1 and CDC group NO-1-like. The genomes of CDC group NO-1 isolates ranged from 3.08 to 3.38 MB with G+C contents of 65.08-66.92 %; genomes derived from CDC group NO-1-like strains were smaller, ranging from 2.72 to 2.82 Mb with G+C contents of 62.87-63.0 mol%. Based on a polyphasic study of these bacteria, we describe gen. nov., sp. nov. and gen. nov., sp. nov. for these clusters.
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