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Table 3 Genomes with higher number of predicted M genes [23].

From: Geographic distribution of methyltransferases of Helicobacter pylori: evidence of human host population isolation and migration

Organism

Genome size (Mbp)

Total genes

M genes

% M Genesa)

% GC Genomeb)

% GC RM genesc)

Microcystis aeruginosa NIES-843

5.84

6312

51

0.81

42

40

Microcystis aeruginosa PCC 7806

?

?

42

?

42

40

Roseiflexus sp. RS-1

5.80

4517

38

0.83

60

58

Roseiflexus castenholzii DSM 13941

5.72

4330

36

0.83

60

56

Campylobacter upsaliensis RM3195

1.77

1998

34

1.70

34

34

Helicobacter pylori G27

1.65

1493

34

2.28

38

37

Helicobacter pylori HPAG1

1.60

1536

32

2.08

39

37

Helicobacter pylori Shi470

1.61

1569

32

2.04

38

36

Orientia tsutsugamushi Boryong

2.13

1182

31

2.62

30

28

Helicobacter acinonychis Sheeba

1.55

1612

29

1.80

38

35

Helicobacter pylori P12

1.67

1567

29

1.85

38

36

Cenarchaeum symbiosum

2.05

2017

28

1.39

57

52

Helicobacter pylori 26695

1.67

1576

28

1.78

39

36

Helicobacter pylori J99

1.64

1489

28

1.88

39

36

  1. a) percentage of M genes (M genes/total genes)
  2. b) percentage of GC content in the sequenced genome
  3. c) mean percentage of GC content among R-M system genes present within the genome