Abstract
N(6) -methyladenosine (m(6) A) is an abundant internal modification in eukaryotic mRNA and plays regulatory roles in mRNA metabolism. However, methods to precisely locate the m(6) A modification remain limited. We present here a photo-crosslinking-assisted m(6) A sequencing strategy (PA-m(6) A-seq) to more accurately define sites with m(6) A modification. Using this strategy, we obtained a high-resolution map of m(6) A in a human transcriptome. The map resembles the general distribution pattern observed previously, and reveals new m(6) A sites at base resolution. Our results provide insight into the relationship between the methylation regions and the binding sites of RNA-binding proteins.
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