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Dai, Xiaoxia; Wang, Tianlu; Gonzalez, Gwendolyn; Wang, Yinsheng
Analytical chemistry, 06/2018, Letnik: 90, Številka: 11Journal Article
N1-methyladenosine (m1A) is an important post-transcriptional modification in RNA; however, the exact biological role of m1A remains to be determined. By employing a quantitative proteomics method, we identified multiple putative protein readers of m1A in RNA, including several YTH domain family proteins. We showed that YTHDF1-3 and YTHDC1, but not YTHDC2, could bind directly to m1A in RNA. We also found that Trp432 in YTHDF2, a conserved residue in the hydrophobic pocket of the YTH domain that is necessary for its binding to N 6-methyladenosine (m6A), is required for its recognition of m1A. An analysis of previously published data revealed transcriptome-wide colocalization of YTH domain-containing proteins and m1A sites in HeLa cells, suggesting that YTH domain-containing proteins can bind to m1A in cells. Together, our results uncovered YTH domain-containing proteins as readers for m1A in RNA and provided new insight into the functions of m1A in RNA biology.
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