Table 1.

Deduced positions of the transmembrane helices in human peroxisomal ATP-binding Cassette transporters

Transporter	TMH 1	TMH 2	TMH 3	TMH 4	TMH 5	TMH 6
ABCD1	93–112	130–147	208–224	244–262	338–355	384–403
ABCD2	106–125	143–160	221–237	257–274	351–368	388–407
ABCD3	85–104	122–139	200–216	231–248	324–341	356–375