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Species/Subspecies: Chlamydia trachomatis
Etymology: Genus name: a cloac.
Species epithet: of trachoma.
Significance:  [Primarily in human medicine]   
Taxonomy:
Phylum
Chlamydiae
Class
Chlamydiia
Order
Chlamydiales
Family
Chlamydiaceae 
Genus
Chlamydia
Type Strain: A/Har-13 (Trachoma type A strain HAR-13) = ATCC VR-571B.
Macromorphology (smell): Does only grow intracellularly and can, therfore, not be cultivated on artificial substrates.
Micromorphology: Outside the host cell: infectious elementary bodies (0.2-0.3 µm).
Within the host cell: non-infectious reticulate bodies (0.8-1.0 µm). C. trachomatis is non-motile.
Gram +/Gram -:G-, difficult to gram stain.
Metabolism: Aerobic, but members of the family Chlamydiaceae have only limited resources to to synthesize their own ATP. Therefore, they can ingest ATP from the host cell.
Catalase/Oxidase:
Spec. Char.:
Hosts: Humans
Disease (Swedish):Reservoir: Artrit, konjunktivit, pneumoni, genitalinfektion (STD), trakom.
Disease (English):Arthritis, conjunctivitis, pneumonia. genital infections (STD), trachoma
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_007429 A/HAR-13T 1 044 459 1c + 1c 
Six strains have been sequenced and 0-1 plasmid has been found in these strains.

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
D89067 HAR-13T 1 548 

Taxonomy/phylogeny:
Chlamydia trachomatis  
Five species have been described within genus Chlamydia and six species have been described within genus Chlamydophila. Species within the family Chlamydiaceae form two relatively distinct clusters and have, therefore, been divided into two genera Chlamydia and Chlamydophila. However, some research groups have not accepted this, but include all species within genus Chlamydia.
Comment:Strictly intracellular. The cell envelope contains cystein rich proteins and only a small amount of peptidoglycans.
Reference(s): No. 140
Links: The comprehensive reference and education wiki on Chlamydia and the Chlamydiales, Klamydia-föreläsning
Updated:2020-03-05

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