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Table 2 Complete genomes where Trp-pathway genes were lost via reductive evolution

From: Inter-genomic displacement via lateral gene transfer of bacterial trp operons in an overall context of vertical genealogy

Bacterial organisms No pathway Incomplete pathway
Bdellovibrio bacteriovorus  
Borrelia burgdorferi  
Chlamydia muridarum  
Chlamydia trachomatis  
Chlamydophila pneumoniae  
Chlamydophila psittaci a
Clostridium difficile  
Clostridium perfringens  
Clostridium tetani  
Coxiella burnetti  
Enterococcus faecalis  
Fusobacterium nucleatum  
Haemophilus ducreyi  
Lactobacillus johnsonii  
Mycoplasma genitalium  
Mycoplasma mycoides  
Mycoplasma pneumoniae  
Phytoplasma asteris  
Porphyromonas gingivalis  
Rickettsia prowazekii  
Streptococcus agalactiae  
Streptococcus equi  
Streptococcus pyogenes  
Treponema denticola  
Treponema pallidum  
Tropheryma whipplei  
Ureaplasma urealyticum  
Wigglesworthia glossinidia b  
Wolbachia sp.b  
Yesinia pestis KIM  
  1. aBut see [10] for a description of how an incomplete Trp pathway has been joined with other genes to yield a mosaic operon with a novel function. bInsect endosymbiont.