Fig. 1: Distribution and molecular structures of RNA methylations.
From: The role of N6-methyladenosine-modified non-coding RNAs in the pathological process of human cancer

A Schematic representation of the distribution of m6A, m5C, m7G, m1A, and m6Am in the mammalian transcriptome. The m6A modification is generally enriched in long internal exons, stop codons, and 3ʹ-UTR. B The motifs of m6A, m5C, and m1A are conserved. C Molecular structures of RNA methylation: m6A, m5C, m6Am, m7G, and m1A.