Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Characterization of the MHV S pre- to postfusion transition. (A–E) Annotated mass spectra showing that trypsin cleavage can occur at or near the predicted S1/S2 (A–C) and S2′ (D and E) sites. (F) Section of a micrograph with negatively stained MHV S2 rosettes formed upon incubation of prefusion S with 1:100 trypsin. (Scale bar, 10 nm.)
