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The DEAD-Box RNA Helicase DDX3 Interacts with m6A RNA Demethylase ALKBH5.


ABSTRACT: DDX3 is a member of the family of DEAD-box RNA helicases. DDX3 is a multifaceted helicase and plays essential roles in key biological processes such as cell cycle, stress response, apoptosis, and RNA metabolism. In this study, we found that DDX3 interacted with ALKBH5, an m6A RNA demethylase. The ATP domain of DDX3 and DSBH domain of ALKBH5 were indispensable to their interaction with each other. Furthermore, DDX3 could modulate the demethylation of mRNAs. We also showed that DDX3 regulated the methylation status of microRNAs and there was an interaction between DDX3 and AGO2. The dynamics of m6A RNA modification is still a field demanding further investigation, and here, we add a link by showing that RNA demethylation can be regulated by proteins such as DDX3.

SUBMITTER: Shah A 

PROVIDER: S-EPMC5733242 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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The DEAD-Box RNA Helicase DDX3 Interacts with m<sup>6</sup>A RNA Demethylase ALKBH5.

Shah Abdullah A   Rashid Farooq F   Awan Hassaan Mehboob HM   Hu Shanshan S   Wang Xiaolin X   Chen Liang L   Shan Ge G  

Stem cells international 20171123


DDX3 is a member of the family of DEAD-box RNA helicases. DDX3 is a multifaceted helicase and plays essential roles in key biological processes such as cell cycle, stress response, apoptosis, and RNA metabolism. In this study, we found that DDX3 interacted with ALKBH5, an m<sup>6</sup>A RNA demethylase. The ATP domain of DDX3 and DSBH domain of ALKBH5 were indispensable to their interaction with each other. Furthermore, DDX3 could modulate the demethylation of mRNAs. We also showed that DDX3 reg  ...[more]

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