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.
(Upper) AS-48, with α-helices represented as cylinders. (Lower) Positive electrostatic potential at the level of 2kT/q, as calculated with the program GRASP. The direction of maximum change of the potential is approximately vertical. The length of the polypeptide in that orientation, 20 Å, is given so as to be compared with 40 Å, the standard thickness of a lipid bilayer.
