%0 Journal Article %A Laporte, J. %A Lenoir, G. %T Structural Proteins of Foot-and-Mouth Disease Virus %D 1973 %J Journal of General Virology, %V 20 %N 2 %P 161-168 %@ 1465-2099 %R https://doi.org/10.1099/0022-1317-20-2-161 %I Microbiology Society, %X SUMMARY A mutant of the virus of foot-and-mouth disease (O type) was studied, and shown by electrophoresis in SDS-polyacrylamide gels to contain equimolar proportions of four polypeptides with mol. wts. of 34, 20, 17 and 14 × 103. Two minor components were also present with mol. wts. of 51 and 25 × 103 and in the molar ratio of 0.07 and 0.28. Only the polypeptide of mol. wt. 34 × 103 was labelled when the intact virus was iodinated. This polypeptide was sensitive to the action of trypsin and showed leucine as the N-terminal amino acid. Our own and other results are discussed in terms of virus structure. %U https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-20-2-161