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The Chlamydiaceae are a family of gram-negative bacteria that belongs to the phylum Chlamydiota, order Chlamydiales. Chlamydiaceae species express the family-specific lipopolysaccharide epitope αKdo-(2→8)-αKdo-(2→4)-αKdo (previously called the genus-specific epitope). Chlamydiaceae ribosomal RNA genes all have at least 90% DNA sequence ...
Currently, the order Chlamydiales includes the families Chlamydiaceae, Simkaniaceae, and Waddliaceae, which have Gram-negative extracellular infectious bodies (EBs), and Parachlamydiaceae, which has variable Gram staining of EBs. The family Rhabdochlamydiaceae has been proposed.
Molecular signatures have also been found that are exclusive for the family Chlamydiaceae. [17] [28] The Chlamydiaceae originally consisted of one genus, Chlamydia, but in 1999 was split into two genera, Chlamydophila and Chlamydia. The genera have since 2015 been reunited where species belonging to the genus Chlamydophila have been ...
This view was challenged three years later by newer whole genome analysis techniques leading to a proposal to "reunite the Chlamydiaceae into a single genus, Chlamydia". [7] By the 2010s this reclassification "was not wholly accepted or adopted" [ 8 ] among microbiologists, which "resulted in a reversion to the single, original genus Chlamydia ...
In 2009 the validity of Chlamydophila was challenged by newer DNA analysis techniques, leading to a proposal to "reunite the Chlamydiaceae into a single genus, Chlamydia". [8] This appears to have been accepted by the community, [9] [10] bringing the number of (valid) Chlamydia species up to 9. Many probable species were subsequently isolated ...
Parachlamydiaceae is a family of bacteria in the order Chlamydiales.Species in this family have a Chlamydia–like cycle of replication and their ribosomal RNA genes are 80–90% identical to ribosomal genes in the Chlamydiaceae.
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In 1999, the order Chlamydiales was assigned two new families (Parachlamydiaceae and Simkaniaceae), and within the family Chlamydiaceae, the genus Chlamydia was divided into two genera, Chlamydia and the newly designated genus Chlamydophila, with C. psittaci becoming Chlamydophila psittaci. [1]