ATP Binding Cassette Subfamily D Member 2
ALDRP
ALDR
ALDL1
ATP-Binding Cassette, Sub-Family D (ALD), Member 2
ATP-Binding Cassette Sub-Family D Member 2
Adrenoleukodystrophy-Related Protein
Adrenoleukodystrophy-Like 1
HALDR
EC 3.1.2.-
EC 7.6.2.-
ABC39
ALD1
The protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the ALD subfamily, which is involved in peroxisomal import of fatty acids and/or fatty acyl-CoAs in the organelle. All known peroxisomal ABC transporters are half transporters which require a partner half transporter molecule to form a functional homodimeric or heterodimeric transporter. The function of this peroxisomal membrane protein is unknown; however this protein is speculated to function as a dimerization partner of ABCD1 and/or other peroxisomal ABC transporters. Mutations in this gene have been observed in patients with adrenoleukodystrophy, a severe demyelinating disease. This gene has been identified as a candidate for a modifier gene, accounting for the extreme variation among adrenoleukodystrophy phenotypes. This gene is also a candidate for a complement group of Zellweger syndrome, a genetically heterogeneous disorder of peroxisomal biogenesis. [provided by RefSeq, Jul 2008]
Forensic Context
A study in humans established a targeted RNA sequencing protocol for predicting the time-of-day of bloodstain deposition, where the ABCD2 was included as one of 69 candidate mRNA markers [Gosch et al. DOI:10.1101/2025.02.03.636230]. In the final penalised regression model, the ABCD2 contributed a non-zero coefficient specifically in the cosine component, indicating its diurnal expression pattern was utilized for time prediction [Gosch et al. DOI:10.1016/J.Fsigen.2025.103287].