ABCD3 (ATP-Binding Cassette Subfamily D Member 3) is a peroxisomal transporter gene essential for peroxisome function and lipid metabolism.
ABCD3 encodes a peroxisomal membrane protein that belongs to the ATP-binding cassette (ABC) transporter family. As a peroxisomal importer, ABCD3 is critical for transporting very long-chain fatty acids (VLCFAs) and other metabolites into peroxisomes for β-oxidation. This function is particularly important in neurons, where peroxisomal dysfunction contributes to neurodegenerative processes. [1]
| Attribute | Value |
|---|---|
| Full Name | ATP-Binding Cassette Subfamily D Member 3 |
| Symbol | ABCD3 |
| Location | Chromosome 1p22.1 |
| Protein Class | ABC transporter (peroxisomal) |
| Molecular Weight | ~79 kDa |
ABCD3 functions as a peroxisomal membrane transporter:
The protein forms homodimers in the peroxisomal membrane and uses ATP hydrolysis to drive substrate transport.
ABCD3 is expressed in multiple tissues with high expression in:
In the brain, ABCD3 is localized to peroxisomes in both neurons and glial cells, with particular enrichment in regions with high metabolic demand. [3]
ABCD3 interacts with several proteins:
Targeting ABCD3 for neurodegenerative disease therapy:
Key approaches for studying ABCD3 in neurodegeneration:
ABCD3 is a peroxisomal ABC transporter critical for VLCFA metabolism and peroxisome function. Its dysfunction contributes to neurodegenerative processes through impaired lipid metabolism, oxidative stress, and disrupted cellular homeostasis. Understanding ABCD3's role may lead to therapeutic strategies for multiple neurodegenerative conditions. [7]
Kou J, et al. Peroxisomal dysfunction in Alzheimer's disease pathogenesis. Nat Rev Neurosci. 2020. ↩︎ ↩︎
Steinberg S, et al. ABCD3 peroxisomal transporter function and disease associations. Mol Genet Metab. 2019. ↩︎
Elsebee M, et al. ABCD3 expression in human brain regions. J Neurochem. 2021. ↩︎
Liu X, et al. Peroxisome dysfunction in Parkinson's disease models. Cell Death Discov. 2022. ↩︎
Cimino F, et al. Peroxisomes in neurodegenerative diseases: The missing link?. Prog Lipid Res. 2023. ↩︎
Walker S, et al. Targeting peroxisomal transporters for neuroprotection. Free Radic Biol Med. 2023. ↩︎
Johnson A, et al. ABC transporter mutations and neurodegenerative disease risk. Brain. 2024. ↩︎