/product="putative envelope polyprotein"
Well, I'm not a virologist, but it looks like the envelope protein is encoded by the inicated nucleotides. I don't know how you define "gene", but viruses (sp?) are tight for space, so it's not uncommon for a nucleotide to code for m ore than one product, by alternate splices for example. Perhaps, in this case, the transcript is translated, then the protein is lysed into multiple separate peptides.