Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
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information only on official, secure websites.
Schematic architecture or TAAs and organization of their domains. The names of three domain types, Ylhead, HIM and ISneck, stand for—in order—YadA-like head, head insert motif and insertion sequence neck. Other abbreviated domain names (GIN, FxG, HANS, DALL and FGG) come from prominent residue patterns in those domains.
