Direct RNA Sequencing Reveals SARS-CoV-2 m6A Sites and Possible Differential DRACH Motif Methylation among Variants.
Direct RNA Sequencing Reveals SARS-CoV-2 m6A Sites and Possible Differential DRACH Motif Methylation among Variants.
复制标题
DOI:
10.3390/v13112108
复制
发表时间:
2021-10-20
期刊:
影响因子:
--
通讯作者:
Briones MRS
中科院分区:
文献类型:
--
作者:
Campos JHC;Maricato JT;Braconi CT;Antoneli F;Janini LMR;Briones MRS
The causative agent of COVID-19 pandemic, SARS-CoV-2, has a 29,903 bases positive-sense single-stranded RNA genome. RNAs exhibit about 150 modified bases that are essential for proper function. Among internal modified bases, the N6-methyladenosine, or m6A, is the most frequent, and is implicated in SARS-CoV-2 immune response evasion. Although the SARS-CoV-2 genome is RNA, almost all genomes sequenced thus far are, in fact, reverse transcribed complementary DNAs. This process reduces the true complexity of these viral genomes because the incorporation of dNTPs hides RNA base modifications. Here, we present an initial exploration of Nanopore direct RNA sequencing to assess the m6A residues in the SARS-CoV-2 sequences of ORF3a, E, M, ORF6, ORF7a, ORF7b, ORF8, N, ORF10 and the 3′-untranslated region. We identified fifteen m6A methylated positions, of which, six are in ORF N. Additionally, because m6A is associated with the DRACH motif, we compared its distribution in major SARS-CoV-2 variants. Although DRACH is highly conserved among variants, we show that variants Beta and Eta have a fourth position C > U change in DRACH at 28,884b that could affect methylation. This is the first report of direct RNA sequencing of a Brazilian SARS-CoV-2 sample coupled with the identification of modified bases.
登录
查看更多内容
影响因子:
8.8
作者:
Li N;Hui H;Bray B;Gonzalez GM;Zeller M;Anderson KG;Knight R;Smith D;Wang Y;Carlin AF;Rana TM
通讯作者:
Rana TM
影响因子:
12.8
作者:
Hanff TC;Mohareb AM;Giri J;Cohen JB;Chirinos JA
通讯作者:
Chirinos JA
影响因子:
6.7
作者:
Ahmed-Belkacem, Rostom;Sutto-Ortiz, Priscila;Debart, Francoise
通讯作者:
Debart, Francoise
DOI:
10.1038/s41572-018-0002-y
发表时间:
2018-06-28
期刊:
Nature reviews. Disease primers
影响因子:
--
作者:
Krammer F;Smith GJD;Fouchier RAM;Peiris M;Kedzierska K;Doherty PC;Palese P;Shaw ML;Treanor J;Webster RG;García-Sastre A
通讯作者:
García-Sastre A
影响因子:
2.8
作者:
Araujo DB;Machado RRG;Amgarten DE;Malta FM;de Araujo GG;Monteiro CO;Candido ED;Soares CP;de Menezes FG;Pires ACC;Santana RAF;Viana AO;Dorlass E;Thomazelli L;Ferreira LCS;Botosso VF;Carvalho CRG;Oliveira DBL;Pinho JRR;Durigon EL
通讯作者:
Durigon EL