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Table 4 Summary of correlations between CGI density and genomic features

From: CpG island density and its correlations with genomic features in mammalian genomes

Algorithm

Genomic features

r

P

Shown in figure

TJ (9 genomes)

Chromosome pairs

0.88

7.9 × 10-4

1a

 

Log10(chromosome size)

-0.51

2.6 × 10-16

1b

 

Chromosome GC content

0.65

3.5 × 10-28

1c

 

Chromosome ObsCpG/ExpCpG

0.75

2.8 × 10-41

1d

 

Chromosome arms

0.62

0.037

 
 

Genome size

-0.53

0.073*

 
 

Genomic GC content

0.24

0.27*

 
 

Genomic ObsCpG/ExpCpG

0.63

0.035

 

TJ (9 genomes, intergenic CGIs)

Chromosome pairs

0.79

0.005

S2a

 

Log10(chromosome size)

-0.55

7.3 × 10-19

S2b

 

Chromosome GC content

0.39

8.6 × 10-10

S2c

 

Chromosome ObsCpG/ExpCpG

0.67

3.7 × 10-30

S2d

TJ (10 genomes)

Chromosome pairs

0.58

0.039

S1a

 

Log10(chromosome size)

-0.70

2.6 × 10-37

S1b

 

Chromosome GC content

0.64

3.7 × 10-29

S1c

 

Chromosome ObsCpG/ExpCpG

0.89

1.5 × 10-81

S1d

GF (9 genomes)

Chromosome pairs

0.92

2.0 × 10-4

S5a

 

Log10(chromosome size)

-0.63

1.3 × 10-25

S5b

 

Chromosome GC content

0.72

3.2 × 10-37

S5c

 

Chromosome ObsCpG/ExpCpG

0.81

2.4 × 10-53

S5d

CpGcluster (9 genomes)

Chromosome pairs

0.81

0.004

S6a

 

Log10(chromosome size)

-0.52

1.6 × 10-16

S6b

 

Chromosome GC content

0.21

0.001

S6c

 

Chromosome ObsCpG/ExpCpG

0.61

5.5 × 10-24

S6d

  1. *Insignificant correlation. GF, Gardiner-Garden and Frommer's algorithm; TJ, Takai and Jones' algorithm.