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We have investigated the conformational changes of New-castle disease virus (NDV) glycoproteins in response toreceptor binding, using 1,1-bis(4-anilino)naphthalene-5,5-disulfonic acid (bis-ANS) as a hydrophobicity-sensitiveprobe. Temperature- and pH-dependent conformationalchanges were detected in the presence of free bovine gan-gliosides. The fluorescence of bis-ANS was maximal atpH 5. The binding of bis-ANS to NDV was not affectedby chemicals that denature the fusion glycoprotein, such asreducing agents, nor by the presence of neuraminidaseinhibitors such as N-acetyl neuramicic acid....
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Báo cáo khóa học: Conformational changes of Newcastle disease virus envelope glycoproteins triggered by gangliosides
