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Chlamydiaceae

{{Short description|Family of bacteria}}

{{More citations needed|date=December 2009}}

{{Automatic taxobox

| image = ChlamydiaTrachomatisEinschlusskörperchen.jpg

| image_caption = Chlamydia trachomatis inclusion bodies (brown) in a McCoy cell culture

| taxon = Chlamydiaceae

| authority = Rake 1957

| subdivision_ranks = Genera

| subdivision =

}}

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 identity. Chlamydiaceae species have varying inclusion morphology, varying extrachromosomal plasmid content, and varying sulfadiazine resistance.

The family Chlamydiaceae currently includes one genus and one candidate genus: Chlamydia and candidatus Clavochlamydia.

''Chlamydia''

{{Main|Chlamydia (genus)}}

Three species belong to Chlamydia: C. trachomatis, C. muridarum, and C. suis. C. trachomatis has been found only in humans, C. muridarum in hamsters and mice (family Muridae), and C. suis in swine. Chlamydia species produce a small amount of detectable glycogen and have two ribosomal operons.

Chlamydia trachomatis is the cause of an infection commonly transmitted sexually (often referred as just "Chlamydia") and also is the cause of trachoma, an infectious eye disease, spread by eye, nose, and throat secretions.

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN){{cite web | author=J.P. Euzéby | url=https://lpsn.dsmz.de/phylum/chlamydiota| title=Chlamydiota | access-date=2022-09-09 | publisher=List of Prokaryotic names with Standing in Nomenclature (LPSN)}} and National Center for Biotechnology Information (NCBI){{cite web |author = Sayers| url=https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Undef&id=204428&lvl=3&lin=f&keep=1&srchmode=1&unlock |title=Chlamydiae |access-date=2022-09-09 |publisher=National Center for Biotechnology Information (NCBI) taxonomy database |display-authors=et al.}}

class="wikitable"
colspan=1 | 16S rRNA based LTP_10_2024{{cite web|title=The LTP |url=https://imedea.uib-csic.es/mmg/ltp/#LTP| access-date=10 December 2024}}{{cite web|title=LTP_all tree in newick format| url=https://imedea.uib-csic.es/mmg/ltp/wp-content/uploads/ltp/LTP_all_10_2024.ntree |access-date=10 December 2024}}{{cite web|title=LTP_10_2024 Release Notes| url=https://imedea.uib-csic.es/mmg/ltp/wp-content/uploads/ltp/LTP_10_2024_release_notes.pdf |access-date=10 December 2024}}

! colspan=1 | 120 marker proteins based GTDB 09-RS220{{cite web |title=GTDB release 09-RS220 |url=https://gtdb.ecogenomic.org/about#4%7C |website=Genome Taxonomy Database|access-date=10 May 2024}}{{cite web |title=bac120_r220.sp_labels |url=https://data.gtdb.ecogenomic.org/releases/release220/220.0/auxillary_files/bac120_r220.sp_labels.tree |website=Genome Taxonomy Database|access-date=10 May 2024}}{{cite web |title=Taxon History |url=https://gtdb.ecogenomic.org/taxon_history/ |website=Genome Taxonomy Database|access-date=10 May 2024}}

style="vertical-align:top|

{{Clade | style=font-size:90%;line-height:80%

|1={{clade

|1="Chlamydiifrater"

|2={{clade

|1={{clade

|1=Chlamydophila pecora

|2=Chlamydophila pneumoniae

}}

|2={{clade

|1=Chlamydia

|2=Chlamydophila

}}

}}

}}

}}

|

{{Clade | style=font-size:90%;line-height:80%

|1={{clade

|1="Ca. Clavichlamydia" corrig. Karlsen et al. 2008

|2={{clade

|1="Chlamydiifrater" Vorimore et al. 2021

|2={{clade

|1=Chlamydia Jones, Rake & Stearns 1945

|2=Chlamydophila Everett, Bush & Andersen 1999

}}

}}

}}

}}

See also

References

{{Reflist}}

{{Bacteria classification}}

{{Taxonbar|from=Q13474598}}

{{Authority control}}

Category:Chlamydiota

Category:Bacteria families