An interaction between kshv orf57 and uif provides mrna-adaptor redundancy in herpesvirus intronless mrna export

Brian R. Jackson, James R. Boyne, Marko Noerenberg, Adam Taylor, Guillaume M. Hautbergue, Matthew J. Walsh, Rachel Wheat, David J. Blackbourn, Stuart A. Wilson, Adrian Whitehouse

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The hTREX complex mediates cellular bulk mRNA nuclear export by recruiting the nuclear export factor, TAP, via a direct interaction with the export adaptor, Aly. Intriguingly however, depletion of Aly only leads to a modest reduction in cellular mRNA nuclear export, suggesting the existence of additional mRNA nuclear export adaptor proteins. In order to efficiently export Kaposi's sarcoma-associated herpesvirus (KSHV) intronless mRNAs from the nucleus, the KSHV ORF57 protein recruits hTREX onto viral intronless mRNAs allowing access to the TAP-mediated export pathway. Similarly however, depletion of Aly only leads to a modest reduction in the nuclear export of KSHV intronless mRNAs. Herein, we identify a novel interaction between ORF57 and the cellular protein, UIF. We provide the first evidence that the ORF57-UIF interaction enables the recruitment of hTREX and TAP to KSHV intronless mRNAs in Aly-depleted cells. Strikingly, depletion of both Aly and UIF inhibits the formation of an ORF57-mediated nuclear export competent ribonucleoprotein particle and consequently prevents ORF57-mediated mRNA nuclear export and KSHV protein production. Importantly, these findings highlight that redundancy exists in the eukaryotic system for certain hTREX components involved in the mRNA nuclear export of intronless KSHV mRNAs.

Original languageEnglish
Article numbere1002138
JournalPLoS Pathogens
Volume7
Issue number7
DOIs
Publication statusPublished - 21 Jul 2011
Externally publishedYes

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Herpesviridae
Cell Nucleus Active Transport
Human Herpesvirus 8
Messenger RNA
Proteins
Ribonucleoproteins

Cite this

Jackson, B. R., Boyne, J. R., Noerenberg, M., Taylor, A., Hautbergue, G. M., Walsh, M. J., ... Whitehouse, A. (2011). An interaction between kshv orf57 and uif provides mrna-adaptor redundancy in herpesvirus intronless mrna export. PLoS Pathogens, 7(7), [e1002138]. https://doi.org/10.1371/journal.ppat.1002138
Jackson, Brian R. ; Boyne, James R. ; Noerenberg, Marko ; Taylor, Adam ; Hautbergue, Guillaume M. ; Walsh, Matthew J. ; Wheat, Rachel ; Blackbourn, David J. ; Wilson, Stuart A. ; Whitehouse, Adrian. / An interaction between kshv orf57 and uif provides mrna-adaptor redundancy in herpesvirus intronless mrna export. In: PLoS Pathogens. 2011 ; Vol. 7, No. 7.
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Jackson, BR, Boyne, JR, Noerenberg, M, Taylor, A, Hautbergue, GM, Walsh, MJ, Wheat, R, Blackbourn, DJ, Wilson, SA & Whitehouse, A 2011, 'An interaction between kshv orf57 and uif provides mrna-adaptor redundancy in herpesvirus intronless mrna export', PLoS Pathogens, vol. 7, no. 7, e1002138. https://doi.org/10.1371/journal.ppat.1002138

An interaction between kshv orf57 and uif provides mrna-adaptor redundancy in herpesvirus intronless mrna export. / Jackson, Brian R.; Boyne, James R.; Noerenberg, Marko; Taylor, Adam; Hautbergue, Guillaume M.; Walsh, Matthew J.; Wheat, Rachel; Blackbourn, David J.; Wilson, Stuart A.; Whitehouse, Adrian.

In: PLoS Pathogens, Vol. 7, No. 7, e1002138, 21.07.2011.

Research output: Contribution to journalArticle

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