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  • Title: Integrin alpha2beta1 mediates the cell attachment of the rotavirus neuraminidase-resistant variant nar3.
    Author: Zárate S, Espinosa R, Romero P, Guerrero CA, Arias CF, López S.
    Journal: Virology; 2000 Dec 05; 278(1):50-4. PubMed ID: 11112480.
    Abstract:
    It was previously reported that integrins alpha2beta1, alpha4beta1, and alphaXbeta2 are involved in rotavirus cell infection. In this work we studied the role of integrin subunits alpha2, alpha4, and beta2 on the attachment of rotaviruses RRV and nar3 to MA104 cells. Integrin alpha2beta1 was found to serve as the binding receptor for the neuraminidase-resistant virus nar3, whereas the neuraminidase-sensitive strain RRV interacted with this integrin at a postattachment step. It was shown that nar3 binds alpha2beta1 through the DGE integrin-recognition motif located in the virus surface protein VP5. Integrin subunits alpha4 and beta2 do not seem to be involved in the initial cell binding of either virus.
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