Characterization of the HIV-1 RNA associated proteome identifies Matrin 3 as a nuclear cofactor of Rev function
2011
Identifying Matrin 3 as a Key Factor in HIV-1 RNA Processing
publication
Evidence: moderate
Author Information
Author(s): Anna Kula, Jessica Guerra, Anna Knezevich, Danijela Kleva, Michael P. Myers, Alessandro Marcello
Primary Institution: International Centre for Genetic Engineering and Biotechnology (ICGEB)
Hypothesis
MATR3 is a cellular cofactor that interacts with HIV-1 RNA and is necessary for Rev function.
Conclusion
MATR3 is essential for the Rev-mediated nuclear export of unspliced HIV-1 RNAs.
Supporting Evidence
- MATR3 was identified as a strong candidate in the proteomic screen for factors interacting with HIV-1 RNA.
- Knockdown of MATR3 reduced Gag protein levels, indicating its role in post-transcriptional regulation.
- MATR3 interacts with Rev in an RNA-dependent manner, suggesting a direct role in HIV-1 RNA export.
Takeaway
MATR3 helps HIV-1 move its RNA out of the nucleus, which is important for the virus to make more copies of itself.
Methodology
A novel proteomic method was developed to identify host factors involved in HIV-1 RNA metabolism, using MS2 tagging for RNA affinity purification.
Statistical Information
P-Value
0.00112
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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