Journal Article

Genome Sequence of the Cat Pathogen, <i>Chlamydophila felis</i>

Yoshinao Azuma, Hideki Hirakawa, Atsushi Yamashita, Yan Cai, Mohd Akhlakur Rahman, Harumi Suzuki, Shigeki Mitaku, Hidehiro Toh, Susumu Goto, Tomoyuki Murakami, Kazuro Sugi, Hideo Hayashi, Hideto Fukushi, Masahira Hattori, Satoru Kuhara and Mutsunori Shirai

in DNA Research

Published on behalf of Kazusa DNA Research Institute

Volume 13, issue 1, pages 15-23
Published in print March 2006 | ISSN: 1340-2838
Published online January 2006 | e-ISSN: 1756-1663 | DOI:

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Chlamydophila felis (Chlamydia psittaci feline pneumonitis agent) is a worldwide spread pathogen for pneumonia and conjunctivitis in cats. Herein, we determined the entire genomic DNA sequence of the Japanese C. felis strain Fe/C-56 to understand the mechanism of diseases caused by this pathogen. The C. felis genome is composed of a circular 1 166 239 bp chromosome encoding 1005 protein-coding genes and a 7552 bp circular plasmid. Comparison of C. felis gene contents with other Chlamydia species shows that 795 genes are common in the family Chlamydiaceae species and 47 genes are specific to C. felis. Phylogenetic analysis of the common genes reveals that most of the orthologue sets exhibit a similar divergent pattern but 14 C. felis genes accumulate more mutations, implicating that these genes may be involved in the evolutional adaptation to the C. felis-specific niche. Gene distribution and orthologue analyses reveal that two distinctive regions, i.e. the plasticity zone and frequently gene-translocated regions (FGRs), may play important but different roles for chlamydial genome evolution. The genomic DNA sequence of C. felis provides information for comprehension of diseases and elucidation of the chlamydial evolution.

Keywords: comparative genomics; genome inversion; obligate intercellular bacteria; chlamydia; infectious disease

Journal Article.  4408 words.  Illustrated.

Subjects: Genetics and Genomics

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