The Rotavirus Enterotoxin NSP4 Directly Interacts with the Caveolar Structural Protein Caveolin-1

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The rotavirus enterotoxin NSP4 directly interacts with the caveolar structural protein caveolin-1.

Rotavirus nonstructural protein 4 (NSP4) is known to function as an intracellular receptor at the endoplasmic reticulum (ER) critical to viral morphogenesis and is the first characterized viral enterotoxin. Exogenously added NSP4 induces diarrhea in rodent pups and stimulates secretory chloride currents across intestinal segments as measured in Ussing chambers. Circular dichroism studies furthe...

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Rotavirus (RV) NSP4, the first described viral enterotoxin, is a multifunctional glycoprotein that contributes to viral pathogenesis, morphogenesis, and replication. NSP4 binds both termini of caveolin-1 and is isolated from caveolae fractions that are rich in anionic phospholipids and cholesterol. These interactions indicate that cholesterol/caveolin-1 plays a role in NSP4 transport to the cel...

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A functional NSP4 enterotoxin peptide secreted from rotavirus-infected cells.

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ژورنال

عنوان ژورنال: Journal of Virology

سال: 2006

ISSN: 0022-538X,1098-5514

DOI: 10.1128/jvi.80.6.2842-2854.2006