| ABC | ATP-binding Cassette |
| ATS | ABC Transporter Signature |
| ICL | IntraCellular Loop |
| FA | Fatty Acid |
| MSA | Multiple Sequence Alignment |
| NBD | Nucleotide-binding Domain |
| TMD | TransMembrane Domain |
| TMH | TransMembrane Helix |
| VLCFA | Very Long-Chain Fatty Acid |
| X-ALD | X-linked Adrenoleukodystrophy |