RT Journal Article SR Electronic(1) A1 Laporte, J. A1 Lenoir, G.YR 1973 T1 Structural Proteins of Foot-and-Mouth Disease Virus JF Journal of General Virology, VO 20 IS 2 SP 161 OP 168 DO https://doi.org/10.1099/0022-1317-20-2-161 PB Microbiology Society, SN 1465-2099, AB 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., UL https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-20-2-161