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.
Superposition of the structures of EXM and compound 5 complexes, illustrating that the orientation of the unsaturated C6-methylidene group in EXM is different from that of the C6β-alkoxy group. EXM complex is shown in light blue carbon and backbone (PDB code 3S7S). Compound 5 (PDB code 4GL7) is in beige color. Side chain carbons are in gray, and the backbone is in rainbow.
