Brr2p carboxy-terminal Sec63 domain modulates Prp16 splicing RNA helicase. - Institut Pasteur Access content directly
Journal Articles Nucleic Acids Research Year : 2014

Brr2p carboxy-terminal Sec63 domain modulates Prp16 splicing RNA helicase.

Abstract

RNA helicases are essential for virtually all cellular processes, however, their regulation is poorly understood. The activities of eight RNA helicases are required for pre-mRNA splicing. Amongst these, Brr2p is unusual in having two helicase modules, of which only the amino-terminal helicase domain appears to be catalytically active. Using genetic and biochemical approaches, we investigated interaction of the carboxy-terminal helicase module, in particular the carboxy-terminal Sec63-2 domain, with the splicing RNA helicase Prp16p. Combining mutations in BRR2 and PRP16 suppresses or enhances physical interaction and growth defects in an allele-specific manner, signifying functional interactions. Notably, we show that Brr2p Sec63-2 domain can modulate the ATPase activity of Prp16p in vitro by interfering with its ability to bind RNA. We therefore propose that the carboxy-terminal helicase module of Brr2p acquired a regulatory function that allows Brr2p to modulate the ATPase activity of Prp16p in the spliceosome by controlling access to its RNA substrate/cofactor.
Fichier principal
Vignette du fichier
gku1238.pdf (4.7 Mo) Télécharger le fichier
Origin : Publication funded by an institution

Dates and versions

pasteur-01427502 , version 1 (05-01-2017)

Licence

Attribution

Identifiers

Cite

Olivier Cordin, Daniela Hahn, Ross Alexander, Amit Gautam, Cosmin Saveanu, et al.. Brr2p carboxy-terminal Sec63 domain modulates Prp16 splicing RNA helicase.. Nucleic Acids Research, 2014, 42 (22), pp.13897-910. ⟨10.1093/nar/gku1238⟩. ⟨pasteur-01427502⟩
154 View
332 Download

Altmetric

Share

Gmail Facebook X LinkedIn More