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Biochemical map of polypeptides specified by foot-and-mouth disease virus

Pulse-chase labeling of foot-and-mouth disease virus-infected bovine kidney cells revealed stable and unstable viral-specific polypeptides. To identify precursor-product relationships among these polypeptides, antisera against a number of structural and nonstructural viral-specific polypeptides were used. Cell-free translations programmed with foot-and-mouth disease virion RNA or foot-and-mouth disease virus-infected bovine kidney cell lysates, which were shown to contain almost identical polypeptides, were immunoprecipitated with the various antisera. To further establish identity, some proteins were compared by partial protease digestion. Evidence for a membrane association of the polypeptides coded for by the middle genome region is also presented. A biochemical map of the foot-and-mouth disease virus genome was established from the above information.