Table 1.

Summary of evidence for hsd genes in genomic sequences

OrganismahsdR/hsdM/hsdS presentOrphan genesc
Aeropyrum pernix K1
Aquifex aeolicus VF5
Archaeoglobus fulgidus +
Bacillus subtilis168b
Borrelia burgdorferi
Chlamydia pneumoniae CWL029
Chlamydia trachomatisD/UW-3/CX
Escherichia coli K-12 MG1655+
Haemophilus influenzae Rd+
Helicobacter pylori26695++
Helicobacter pyloriJ99++
Methanobacterium thermoautotrophicum delta H+
Methanococcus jannaschii ++
Mycobacterium tuberculosis H37Rv+
Mycoplasma genitaliumG37+
Mycoplasma pneumoniae M129++
Pyrococcus abyssi Orsay+
Pyrococcus horikoshiiOT3
Rickettsia prowazekii Madrid E
Synechocystis sp. strain PCC6803b
Thermotoga maritima
Treponema pallidum
  • a Strains for which the complete genome sequence and annotation are available.

  • b Type I R-M genes have been identified in other strains of these species.

  • c Only one or two of the three genes were detected.