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.
Schematic model depicting the assembly of ULFs. By lateral association of tetramers (squares designated 4), octamers (squares designated 8), 16- and 24-mers (squares designated 16 and 24), ULFs harboring 32, 40, and 48 monomers (squares designated 32, 40, and 48) are formed. The reaction constants k1, k2, and k3 are indicated for the respective reactions. To see this figure in color, go online.
