Fig. 6

Relationship between 6mA and gene expression or function in H. pylori. A Comparison of expression levels between the genes without 6mA and those with 6mA. B Comparison of expression levels between the genes with high and low 6mA density. C Comparison of 6mA densities between the genes with high and low expression. D Comparison of expression levels between the protein-coding genes with and without 6mA in the upstream 50 bp of transcription start site. In (A-D), P value was calculated using Wilcoxon test. E COG function annotations of protein-coding genes. F COG enrichment analyses of protein-coding genes with varying 6mA levels. P value was calculated using Fisher’s exact test. The COG categories were presented with the false discovery rate-adjusted P value < 0.01