Table 2 Correlation ( r ) between nine gene compositional features and gene body-methylation

GC₃

GC₃

−0.673

Gene expression: mean (μ)

GE_MEAN

0.255

        Standard deviation (σ)

GE_STDEV

0.084

        CV of expression ($\frac{\sigma }{\mu }$)

GE_CV

−0.217

Genome signature (ρ= $\frac{f_{\mathit{CG}}}{f_C{f}_G}$)

GEN_SIG

−0.697

CDS length

l

0.286

Change in CG₃ from the left to the middle of the gene

GRADLM

0.269

Change in CG₃ from the middle to the of the right gene

GRADMR

−0.289

CG₃ in the left third of the coding sequence (CDS)

GCL

−0.364

CG₃ in the middle third of CDS

GCM

−0.545

CG₃ in the right third of CDS

GCR

−0.343