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© Research
Publication : Virology

The interaction of flavivirus M protein with light chain Tctex-1 of human dynein plays a role in late stages of virus replication

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Virology - 20 Jul 2011

Brault JB, Kudelko M, Vidalain PO, Tangy F, Desprès P, Pardigon N

Link to Pubmed [PMID] – 21767858

Virology 2011 Sep;417(2):369-78

The role of the membrane protein (prM/M) in flavivirus life cycle remains unclear. Here, we identified a cellular interactor to the 40-residue-long ectodomain of prM/M (ectoM) using a yeast two-hybrid screen against a human cDNA library and GST pull-down assays. We showed that dynein light chain Tctex-1 interacts with the ectoM of dengue 1-4, West Nile, and Japanese encephalitis flaviviruses. No interaction was found with yellow fever and tick-borne flaviviruses. This interaction is highly specific since a single amino-acid change in the ectoM abrogates the interaction with Tctex-1. To understand the role of this interaction, silencing of Tctex-1 using siRNA was performed prior to infection. A significant decrease in progeny production was observed for dengue and West Nile viruses. Silencing Tctex-1 inhibited the production of recombinant dengue subviral particles (RSPs). Thus Tctex-1 may play a role in late stages of viral replication through its interaction with the membrane protein.

http://www.ncbi.nlm.nih.gov/pubmed/21767858