TABLE 1 

Composition of natural Bacteroidales communities and identification of highly similar regions in strains coresident in a gut microbial ecosystem

Microbial ecosystem, organismaNo. of contigsGenome size (bp)CL02 region (size [bp])b:CL03 region (size [bp])b:CRISPR/Cas systemc
1 (24,866)2 (116,095)3 (17,607)4 (60,734)5 (42,545)6 (44,124)
CL02
    B. cellulosilyticus CL02T12C19257,678,000Type I
    B. dorei CL02T12C06215,997,310Type I
    B. nordii CL02T12C05105,707,590None
    B. ovatus CL02T12C04157,880,760None
    B. salyersiae CL02T12C0175,781,840Type I, III
    P. goldsteinii CL02T12C30146,690,360Type I
    P. johnsonii CL02T12C2964,613,500None
CL03
    B. caccae CL03T12C6165,479,120None
    B. dorei CL03T12C01205,387,250Type I
    B. fragilis CL03T12C0775,214,030Type II, III
    B. ovatus CL03T12C18196,972,150+/−+/−None
    B. uniformis CL03T12C37144,890,740Type II
    B. xylanisolvens CL03T12C04136,056,100None
    P. distasonis CL03T12C0955,055,860Type I, II
    P. merdae CL03T12C32134,918,050None
  • a All species belong to Bacteroides or Parabacteroides.

  • b ✓, the region is present in the organism; +/−, a large, yet partial segment of the region was identified at >99.9%.

  • c Type(s) of CRISPR/Cas systems present in the organism.