Table 2 Distribution of GACC sites throughout the P12 chromosome.

From: Methylomic and phenotypic analysis of the ModH5 phasevarion of Helicobacter pylori

P12 chromosome characteristics – genbank accession number CP001217

Size

1673813 bp dsDNA/3347626 bp total

GC content

38.8%

Number of GACC sites

Forward strand

Reverse Strand

Total a

 

Predicted (based on GC content)

3732

3732

7465

 

Predicted frequency (sites/kb)

2.2

2.2

2.2

 

Actual

1340

1240

2580

 

Frequency (sites/kb)

0.80

0.74

0.77

 

Coding regions

Number of genes

Number of bases

GACC sites

Number

sites/kb b

Open reading framesc

1568

1496527

2300

1.54

rRNA

6

8988

50

5.56

tRNA

36

2837

40

14.1

Frameshift/inactivec,d

14

28100

44

1.57

Total

1624

1536452

2434

1.58

Intergenic regions

na

137361

146

1.06

  1. aCalculated using both strands of chromosomal DNA i.e. 3347626 bp. bCalculated using gene length without considering both strands of DNA independently. cOverlapping sequences counted only once in total number of bases; GACC sites within overlapping sequences counted once only. All genes HPP12_0001 to HPP12_1582 considered as coding rather than intergenic for purposes of GACC content analysis. dInactivated genes are HPP12_0209, 0251, 0314, 0436, 0466, 0467, 0600, 0706, 1319, 1338, 1351, 1378, 1510 and 1512.
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