The Ebolavirus VP24 protein blocks phosphorylation of p38 mitogen-activated protein kinase.
basic_science · Level V
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- Record sourced from PubMed, PMID 21987775.
- Also identified by DOI 10.1093/infdis/jir325 and PMC identifier 3189987.
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Abstract
Type I interferon (IFN) signaling is mediated through several signaling pathways, including the Janus kinase and signal transducer and activator (JAK-STAT) and p38 mitogen-activated protein (MAP) kinase pathways. The VP24 protein of Ebolavirus is an IFN antagonist, blocking type I IFN signaling through the JAK-STAT pathway. Here, we show that, in 293 cells, VP24 also interferes with the p38 MAP kinase pathway by blocking IFN-β-stimulated phosphorylation of p38-α. Similar inhibition was not observed in HeLa cells, suggesting cell type-specific differences in signal transduction.
Medical subject headings
- Ebolavirus
- Viral Proteins
- p38 Mitogen-Activated Protein Kinases