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.
Ribbon and surface representations of 1 (RCSB pdb id: 6ENA) with the variable positions between the family members marked. Red: Positions with the highest frequency of variability: 4 (AKSP), 8 (FVGM), and 25 (KH). Blue: Positions that only differ from the archetype α sequence in α-7; positions 5 (V), 11 (I), 13 (N), and 28 (K). All red-colored positions (4, 8, 25) are situated on the same side of the molecule. Figure prepared in UCSF Chimera.22
