Abstract
The complete nucleotide sequence of cucumber mosaic virus RNA3 of Y strain has been determined and was compared with the reported sequence of RNA3 of Q strain. The sequence of Y strain provided the amino acid sequences of two proteins: the 5'-terminal 3A protein with 279 amino acids and the 3'-terminal viral coat protein with 218 amino acids, while 3A and coat proteins of CMV-Q have been reported to have 333 and 236 amino acids, respectively. The 3'-terminal region of Y strain can be arranged into the secondary structures similar to those proposed for that of Q strain, although there are considerable differences in sequence.
