Journal
EMBO REPORTS
Volume 24, Issue 9, Pages -Publisher
WILEY
DOI: 10.15252/embr.202256512
Keywords
DCP2; LINE-1; liquid-liquid phase separation; MOV10; RNA decap
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In this study, researchers found that MOV10 recruits DCP2 to LINE-1 RNA and forms a complex, exhibiting liquid-liquid phase separation properties. DCP2 cooperates with MOV10 to decap LINE-1 RNA, resulting in its degradation and reduced retrotransposition activity.
Long interspersed element 1 (LINE-1) is the only active autonomous mobile element in the human genome. Its transposition can exert deleterious effects on the structure and function of the host genome and cause sporadic genetic diseases. Tight control of LINE-1 mobilization by the host is crucial for genetic stability. In this study, we report that MOV10 recruits the main decapping enzyme DCP2 to LINE-1 RNA and forms a complex of MOV10, DCP2, and LINE-1 RNP, exhibiting liquid-liquid phase separation (LLPS) properties. DCP2 cooperates with MOV10 to decap LINE-1 RNA, which causes degradation of LINE-1 RNA and thus reduces LINE-1 retrotransposition. We here identify DCP2 as one of the key effector proteins determining LINE-1 replication, and elucidate an LLPS mechanism that facilitates the anti-LINE-1 action of MOV10 and DCP2.
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