1887

Abstract

The polyacrylamide gel electrophoretic patterns of soluble cellular proteins from 1,094 strains of bifidobacteria were compared with available deoxyribonu-cleic acid (DNA)-DNA homology data and with the phenotypic and biochemical reactions of these strains. There was excellent correlation between the 25 distinct protein patterns and 24 DNA-DNA homology groups in the genus. Differentiation among species on the basis of common phenotypic properties often was unreliable. Our results demonstrate that the species previously known as “” is a synonym of Scardovi and Crociani; that “” is a synonym of Reuter; that (ex Scardovi, Trovatelli, Crociani, and Sgorbati 1969) sp. nov., nom. rev. (type strain, ATCC 25865) and Mitsuoka are closely related but distinct entities; and that sp. nov. (type strain, ATCC 27538) and sp. nov. (type strain, ATCC 27537) are valid species. Our analyses also indicate that (ex Scardovi and Trovatelli 1969) sp. nov., nom. rev. (type strain, ATCC 25911) is a valid species. A group of strains intermediate between . and . , “” occurs in calf feces. Identical or nearly identical protein patterns were produced by strains that had 80% or greater DNA homology.

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1982-07-01
2022-01-25
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