<unk> <unk> transmembrane<unk>  is main transmembrane structural unit of ATP-binding cassette<unk> which consist of six transmembrane<unk> es. Many members of the<unk> <unk> family (Pfam PF00005) have two such regions..
Transmembrane domain of ABC transporters
Membrane transport protein
Transmembrane protein
Guanine nucleotide exchange factor
GTPase activating protein
Membrane fusion protein
Voltage-gated ion channel
Serine/threonine-specific protein kinase