McCarthy M, Harrison S C
J Virol. 1977 Jul;23(1):61-73. doi: 10.1128/JVI.23.1.61-73.1977.
Intact Sindbis virus and Triton-solubilized viral glycoprotein were treated with alpha-mannosidase and with a preparation of mixed glycosidases from Diplococcus pneumoniae to probe the accesibility of carbohydrate units on the viral surface. The products of glycosidase attack on Triton-solubilized virus showed that mose carbohydrate units of the glycoproteins are good substrates for these enzymes. The relative resistance of most of the viral oligosaccharides in intact virus particles showed that much of the carbohydrate is not accessible to glycosidases, probably because it is not exposed at the viral surface. The only completely accessible carbohydrate units on Sindbis glycoproteins were the type A oligosaccharides of E2. This differential accessibility of Sindbis oligosaccharides is discussed in relation to the organization of the viral surface.
用α-甘露糖苷酶和肺炎双球菌混合糖苷酶制剂处理完整的辛德毕斯病毒和经曲拉通溶解的病毒糖蛋白,以探究病毒表面碳水化合物单元的可及性。糖苷酶对经曲拉通溶解的病毒的作用产物表明,糖蛋白的大多数碳水化合物单元是这些酶的良好底物。完整病毒颗粒中大多数病毒寡糖的相对抗性表明,许多碳水化合物无法被糖苷酶作用,可能是因为它未暴露在病毒表面。辛德毕斯糖蛋白上唯一完全可及的碳水化合物单元是E2的A型寡糖。本文结合病毒表面的组织结构对辛德毕斯寡糖的这种差异可及性进行了讨论。