Article
Article
Chlamydia
Article By:
Schachter, Julius Chlamydia Laboratory, Department of Laboratory Medicine, San Francisco General Hospital, University of California, San Francisco, California.
Last reviewed:October 2019
DOI:https://doi.org/10.1036/1097-8542.130850
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A genus of bacteria with a growth cycle differing from that of all other microorganisms and responsible for a commonly reported sexually transmitted disease. Members of the genus Chlamydia (chlamydiae) grow only in living cells and cannot be cultured on artificial media. Although capable of synthesizing macromolecules, they have no system for generating energy; the host cell's energy system fuels the chlamydial metabolic processes. The genome is relatively small; the genomes of C. pneumoniae and C. trachomatis have been completely sequenced. Moreover, recent genomic analyses have indicated that the chlamydiae comprise two genera, Chlamydia and Chlamydophila; thus, some species have been reassigned taxonomically in some of the current literature. See also: Bacteria; Bacteriology; Medical bacteriology; Sexually transmitted diseases
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