Transmembrane helix hairpin Fold

Superfamily Families Domains
F1F0 ATP synthase subunit C 1 2
Cytochrome c oxidase subunit II-like, transmembrane region 1 4
Magnesium transport protein CorA, transmembrane region 1 1
Htr2 transmembrane domain-like 1 1
PsbZ-like 2 2