Study of the Role of Long Noncoding roX RNA in Maintaining of the Dosage Compensation Complex in Drosophila melanogaster.

Autor: Babosha VA; Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia. v.babosha@gmail.com., Georgiev PG; Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia., Maksimenko OG; Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia. maksog@mail.ru.
Jazyk: angličtina
Zdroj: Doklady. Biochemistry and biophysics [Dokl Biochem Biophys] 2023 Dec; Vol. 513 (Suppl 1), pp. S8-S11. Date of Electronic Publication: 2024 Jan 07.
DOI: 10.1134/S160767292370062X
Abstrakt: The proteins MSL1, MSL2, MSL3, MLE, and MOF and noncoding RNAs roX1 and roX2 form the Drosophila dosage compensation complex (DCC), which specifically binds to the X chromosome of males. It is known that noncoding RNA roX are primary component of the DCC in the process of assembly and spreading of the complex among the X chromosome of males. However, the role of this RNA in maintaining the structure of the already assembled complex remains unclear. In this work, we have shown that the full-assembled dosage compensation complex dissociates rather weakly when treated with RNases: the MLE helicase is effectively released from the complex, and the remaining protein components (MSL1, MSL2, and MSL3) undergo partial disassembly and continue to be part of subcomplexes. The results confirm the importance of the noncoding roX2 RNA not only in the processes of initiation of DCC assembly but also at the stage of maintaining the structure of the already assembled complex.
(© 2023. Pleiades Publishing, Ltd.)
Databáze: MEDLINE
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