ALKBH7-mediated demethylation regulates mitochondrial polycistronic RNA processing.
ALKBH7-mediated demethylation regulates mitochondrial polycistronic RNA processing.
复制标题
ALKBH7介导的去甲基化调节线粒体多顺反子RNA的加工。
DOI:
10.1038/s41556-021-00709-7
复制
发表时间:
2021-07
影响因子:
21.3
通讯作者:
He C
中科院分区:
文献类型:
--
作者:
Zhang LS;Xiong QP;Peña Perez S;Liu C;Wei J;Le C;Zhang L;Harada BT;Dai Q;Feng X;Hao Z;Wang Y;Dong X;Hu L;Wang ED;Pan T;Klungland A;Liu RJ;He C
Members of the mammalian AlkB family are known to mediate nucleic acid demethylation. ALKBH7, a mammalian AlkB homologue, localizes in mitochondria and affects metabolism, but its function and mechanism of action are unknown. Here we report an approach to site-specifically detect N1-methyladenosine (m1A), N3-methylcytidine (m3C), N1-methylguanosine (m1G) and N2,N2-dimethylguanosine (m22G) modifications simultaneously within all cellular RNAs, and discovered that human ALKBH7 demethylates m22G and m1A within mitochondrial Ile and Leu1 pre-tRNA regions, respectively, in nascent polycistronic mitochondrial RNA. We further show that ALKBH7 regulates the processing and structural dynamics of polycistronic mitochondrial RNAs. Depletion of ALKBH7 leads to increased polycistronic mitochondrial RNA processing, reduced steady-state mitochondria-encoded tRNA levels and protein translation, and notably decreased mitochondrial activity. Thus, we identify ALKBH7 as an RNA demethylase that controls nascent mitochondrial RNA processing and mitochondrial activity.
登录
查看更多内容
影响因子:
16.6
作者:
通讯作者:
--
影响因子:
29
作者:
Cheng, Xiang;Geng, Feng;Guo, Deliang
通讯作者:
Guo, Deliang
影响因子:
9
作者:
Jordan JJ;Chhim S;Margulies CM;Allocca M;Bronson RT;Klungland A;Samson LD;Fu D
通讯作者:
Fu D
影响因子:
64.8
作者:
OJALA, D;MONTOYA, J;ATTARDI, G
通讯作者:
ATTARDI, G
影响因子:
5.3
作者:
Dewe, Joshua M.;Fuller, Benjamin L.;Fu, Dragony
通讯作者:
Fu, Dragony