when vp6 , vp7 , vp4 , and ns28 are expressed singly as the sole viral proteins present in the cell , only membranes from cells expressing ns28 mediate receptor function , indicating that the presence of ns28 is sufficient to mediate the interaction between cores and the membrane and that other viral proteins probably are not involved in the initial receptor : ligand interaction .
C0007634
cell
C0007603
membranes