Cited by 37Drug Transport and Resistance MechanismsMetabolism and Genetic DisordersEnzyme Structure and Function

Structural basis of substrate recognition and translocation by human very long-chain fatty acid transporter ABCD1

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Chen, Zhi-Peng, Xu, Da, Wang, Liang, Mao, Yao-Xu, Li, Yang, Cheng, Meng-Ting, Zhou, Cong-Zhao, Hou, Wen-Tao +1 more·2022·Nature Communications

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Abstract

Human ABC transporter ABCD1 transports very long-chain fatty acids from cytosol to peroxisome for β-oxidation, dysfunction of which usually causes the X-linked adrenoleukodystrophy (X-ALD). Here, we report three cryogenic electron microscopy structures of ABCD1: the apo-form, substrate- and ATP-bound forms. Distinct from what was seen in the previously reported ABC transporters, the two symmetric molecules of behenoyl coenzyme A (C22:0-CoA) cooperatively bind to the transmembrane domains (TMDs). For each C22:0-CoA, the hydrophilic 3’-phospho-ADP moiety of CoA portion inserts into one TMD, with the succeeding pantothenate and cysteamine moiety crossing the inter-domain cavity, whereas the hydrophobic fatty acyl chain extends to the opposite TMD. Structural analysis combined with biochemical assays illustrates snapshots of ABCD1-mediated substrate transport cycle. It advances our understanding on the selective oxidation of fatty acids and molecular pathology of X-ALD.

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  • ALDP transport involves cooperative binding of two VLCFAcyl-CoAs, ATP binding, and ALDP homodimerization, followed by outward-facing conformational change allowing release of VLCFAcylCoA into the peroxisome matrix, where VLCFAcyl-CoA undergoes peroxisomal β-oxidation.

    “Transport involves cooperative binding of two VLCFAcyl-CoAs, ATP binding, and ALDP homodimerization [147], followed by outward-facing ALDP conformational change allowing for the release of VLCFAcylCoA into the peroxisome matrix [148], where VLCFAcyl-CoA undergoes peroxisomal β-oxidation [149].”

    From Revisiting the Pathogenesis of X-Linked Adrenoleukodystrophy (2025) · cites this paper as [148]

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Authors
Chen, Z.-P., Xu, D., Wang, L., Mao, Y.-X., Li, Y., Cheng, M.-T., Zhou, C.-Z., Hou, W.-T., & Chen, Y.
Affiliations
University of Science and Technology of China (CN)
Corresponding author
  • Zhou, Cong-Zhao
  • Hou, Wen-Tao
  • Chen, Yuxing
Venue
Nature Communications
Published
2022-06-08
Volume
13
Issue
1
Pages
3299-3299
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4281625653
Cited by
37
References
76
Citations by year
2026: 6 · 2025: 9 · 2024: 8 · 2023: 7 · 2022: 6 · 2021: 1
FWCI
3.14
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Ministry of Science and Technology of the People's Republic of China (2020YFA0509302)
  • National Natural Science Foundation of China (32071206)
  • The Strategic Priority Research Program of the Chinese Academy of Sciences
Topics
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
ABCD1, ABC transporters, X-linked adrenoleukodystrophy, peroxisomal beta-oxidation, substrate recognition, substrate translocation, ATP-bound state, transmembrane domain, cryo-EM structure, pantothenic acid
MeSH terms
ATP Binding Cassette Transporter, Subfamily D, Member 1, Adrenoleukodystrophy, Coenzyme A, Fatty Acids, Nonesterified, Humans, Peroxisomes

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