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Syst Appl Microbiol. 2001 Apr;24(1):63-6.

Genetic characterization of a Chlamydophila pneumoniae isolate from an African frog and comparison to currently accepted biovars.

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Federal Institute for Health Protection of Consumers and Veterinary Medicine, Jena, Germany.


The amphibian isolate DE177 identified as Chlamydophila (C.) pneumoniae was sequenced in five genomic regions: 16S ribosomal RNA gene, 16-23S intergenic spacer, ompA, ompB, and groESL genes. Comparison with corresponding sequences of the currently accepted equine, human and koala biovars of C. pneumoniae revealed that koala strains represented the most closely related taxon, although sequence dissimilarities in the ompA (VD4) and ompB gene regions were noted. In this respect, the present isolate is distinct from a previously described frog isolate (Berger et al., 1999) whose sequence analysis yielded identity to the koala biovar. As three of the nucleotide substitutions in ompA (VD4) of DE177 will be translated into two altered amino acids the possible existence of another biovar is discussed.

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