Rickettsiaceae - Genomics

Genomics

Comparative genomic analysis has identified 3 proteins, RP030, RP187 and RP192, which are uniquely found in members of the family Rickettsiaceae and serve as molecular markers for this family. In addition, conserved signature indels in a number of proteins including a 4 amino acid insert in transcription repair coupling factor Mfd, a 10 amino acid insert in ribosomal protein L19, 1 amino acid inserts each in the FtsZ protein and the major sigma factor 70, and a 1 amino acid deletion in exonuclease VII protein that are specific for the Rickettsiaceae species have been identified.


Phylogeny of Rickettsiales
Other alphaproteobacteria

Rhodospirillales, Sphingomonadales, Rhodobacteraceae, Rhizobiales, etc.


Rickettsiales
SAR11 clade

Pelagibacter ubique




Mitochondria



Anaplasmataceae



Ehrlichia



Anaplasma




Wolbachia




Neorickettsia



Rickettsiaceae

Rickettsia






Robust phylogeny of Rickettsiales from Williams et al. (2007)


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