TREX-2 MRNA EXPORT COMPLEX INTERACTS WITH HLB COMPONENT FLASH AND IS RECRUITED TO PROCESSED HISTONE MRNAS

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Disruption of the normal expression of histone genes lead to the development of various pathologies. One of the key stages of gene expression is the export of mRNA from the nucleus to the cytoplasm. The TREX-2 protein complex regulates the export of the majority of poly(A)-containing mRNAs. Previously, we demonstrated that TREX-2 is also associated with histone mRNA particles and participates in the nuclear export of histone mRNAs, which lack poly(A)-tails. In this study we investigated the interaction of TREX-2 proteins with the histone mRNA processing machinery. It was shown that TREX-2 interacts with the FLASH protein, a key protein of the specialized histone mRNA processing machinery and a component of the histone locus body (HLB). The TREX-2 complex is recruited through its interaction with FLASH to processed histone mRNAs.

作者简介

M. Kurshakova

Engelhardt Institute of Molecular Biology RAS

Email: kursha@mail.ru
Moscow, Russian Federation

Y. Yakusheva

Engelhardt Institute of Molecular Biology RAS

Moscow, Russian Federation

S. Georgieva

Engelhardt Institute of Molecular Biology RAS

Academician of the RAS Moscow, Russian Federation

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