Fig. 10

A cartoon of the transmembrane helix topology illustrating the transmembrane helix topology, indicating the proteins' extracellular and intercellular regions. Yellow-filled boxes with labels S1, S2, and S3 represent regions of the transmembrane helix. Membrane regions are denoted by filled-black boxes. An individual line is depicted for the terminal regions N and C. a transmembrane helix for the envelope protein (topology: 64–79,375–403,548–571, Helix count: 3, N-terminal: out, Score: 9.0281). b transmembrane for the gag protein (topology: 297–314, Helix count: 1, N-terminal: out, Score: 0.112)