1887

Abstract

Abstract

We propose the name gen. nov. for a group of organisms in the that were isolated from clinical sources in North America (the clinical significance of these organisms is unknown). This name was coined by two of us (P.A.D.G. and F.G.) from the letters CDC, the abbreviation for the Centers for Disease Control, where the organisms were originally discovered. Phenotypically, resembles no other group of the members of this genus are lipase positive, resistant to colistin and cephalothin, and negative for deoxyribonuclease, gelatin liquefaction, and utilization of L-arabinose and L-rhamnose. Deoxyribonucleic acid relatedness studies showed that strains were 32 to 100% related to each other and less than 23% related to other members of the We found five deoxyribonucleic acid hybridization groups among 17 strains, but three of these groups contained only 1 strain (strains 001, 002, and 012). Two deoxyribonucleic acid hybridization groups were named. sp. nov. (nine strains), the type species of the genus, fermented sucrose and D-xylose and was positive in the ornithine decarboxylase and ascorbate tests. grew in a mineral salts medium with glucose as the carbon source only if the medium was supplemented with 0.1 of thiamine per ml. The type strain of is strain 005 (= ATCC 33431 = CDC 3278-77 = CIP 80.34) sp. nov. (five strains) did not ferment sucrose and D-xylose and was negative in the ornithine decarboxylase and ascorbate tests. This species grew on glucose as the role source of carbon and energy with no growth factor requirement. The type strain of is strain 004 (= ATCC 33432 = CDC 0485-76 = CIP 80.35). Within species, deoxyribonucleic acid relatedness was 80 to 100% at 60°C (S1 nuclease method), and C. and were much more closely related to each other (32 to 52%) than to members of any other group within the family (1 to 21%).

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1981-07-01
2024-03-28
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