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Classification of Coryneform Bacteria Associated with Human Urinary Tract Infection (Group D2) as Corynebacterium urealyticum sp. nov.

¹National Collection of Type Cultures, Central Public Health Laboratory, 61 Colindale Avenue, London NW9 5HT, United Kingdom
²Department of Clinical Microbiology, Fundación Jiménez Díaz, 28040 Madrid, Spain
³Department of Genetics and Microbiology, University of Murcia, 30100 Murcia, Spain

^* Corresponding author.

ABSTRACT

Urealytic strains of coryneform bacteria that are designated Corynebacterium group D2 and are isolated from human urine are a cause of urinary tract infections. Cell wall and lipid analyses confirmed that these organisms are members of the genus Corynebacterium but can be separated from other species in the genus on the basis of DNA base composition and DNA-DNA hybridization values. Biochemically, strains in this taxon can be distinguished from other Corynebacterium spp. by their failure to produce acid from carbohydrates, by their failure to reduce nitrates, and by their ability to hydrolyze urea. We regard these bacteria as a new species of the genus Corynebacterium and propose the name Corynebacterium urealyticum. The type strain is strain NCTC 12011 (= ATCC 43042).

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