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- PDB-7vr1: Cryo-EM structure of the ATP-binding cassette sub-family D member... -

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Basic information

Entry
Database: PDB / ID: 7vr1
TitleCryo-EM structure of the ATP-binding cassette sub-family D member 1 from Homo sapiens
ComponentsATP-binding cassette sub-family D member 1
KeywordsTRANSLOCASE / Membrane protein / LIPID TRANSPORT
Function / homology
Function and homology information


ABC-type fatty-acyl-CoA transporter activity / peroxisomal membrane transport / very long-chain fatty-acyl-CoA catabolic process / very long-chain fatty acyl-CoA hydrolase activity / positive regulation of unsaturated fatty acid biosynthetic process / Linoleic acid (LA) metabolism / Defective ABCD1 causes ALD / alpha-linolenic acid metabolic process / long-chain fatty acid catabolic process / long-chain fatty acid import into peroxisome ...ABC-type fatty-acyl-CoA transporter activity / peroxisomal membrane transport / very long-chain fatty-acyl-CoA catabolic process / very long-chain fatty acyl-CoA hydrolase activity / positive regulation of unsaturated fatty acid biosynthetic process / Linoleic acid (LA) metabolism / Defective ABCD1 causes ALD / alpha-linolenic acid metabolic process / long-chain fatty acid catabolic process / long-chain fatty acid import into peroxisome / very long-chain fatty acid catabolic process / alpha-linolenic acid (ALA) metabolism / regulation of fatty acid beta-oxidation / Beta-oxidation of very long chain fatty acids / Class I peroxisomal membrane protein import / very long-chain fatty acid metabolic process / sterol homeostasis / peroxisome organization / regulation of mitochondrial depolarization / ABC transporters in lipid homeostasis / myelin maintenance / fatty acyl-CoA hydrolase activity / regulation of cellular response to oxidative stress / Hydrolases; Acting on ester bonds; Thioester hydrolases / positive regulation of fatty acid beta-oxidation / linoleic acid metabolic process / regulation of oxidative phosphorylation / Translocases; Catalysing the translocation of other compounds; Linked to the hydrolysis of a nucleoside triphosphate / fatty acid elongation / peroxisomal membrane / long-chain fatty acid transmembrane transporter activity / fatty acid beta-oxidation / ATPase-coupled transmembrane transporter activity / negative regulation of cytokine production involved in inflammatory response / fatty acid homeostasis / negative regulation of reactive oxygen species biosynthetic process / neuron projection maintenance / mitochondrial membrane / ADP binding / peroxisome / protein heterodimerization activity / lysosomal membrane / endoplasmic reticulum membrane / perinuclear region of cytoplasm / enzyme binding / protein homodimerization activity / ATP hydrolysis activity / ATP binding / identical protein binding / membrane / cytoplasm / cytosol
Similarity search - Function
Peroxysomal long chain fatty acyl transporter / ABC transporter transmembrane region 2 / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. ...Peroxysomal long chain fatty acyl transporter / ABC transporter transmembrane region 2 / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ATP-binding cassette sub-family D member 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsYang, G.H. / Jia, Y.T. / Zhang, Y.M.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Elife / Year: 2022
Title: Structural and functional insights of the human peroxisomal ABC transporter ALDP.
Authors: Yutian Jia / Yanming Zhang / Wenhao Wang / Jianlin Lei / Zhengxin Ying / Guanghui Yang /
Abstract: Adrenoleukodystrophy protein (ALDP) is responsible for the transport of very-long-chain fatty acids (VLCFAs) and corresponding CoA-esters across the peroxisomal membrane. Dysfunction of ALDP leads to ...Adrenoleukodystrophy protein (ALDP) is responsible for the transport of very-long-chain fatty acids (VLCFAs) and corresponding CoA-esters across the peroxisomal membrane. Dysfunction of ALDP leads to peroxisomal metabolic disorder exemplified by X-linked adrenoleukodystrophy (ALD). Hundreds of ALD-causing mutations have been identified on ALDP. However, the pathogenic mechanisms of these mutations are restricted to clinical description due to limited structural and biochemical characterization. Here we report the cryo-electron microscopy structure of human ALDP with nominal resolution at 3.4 Å. ALDP exhibits a cytosolic-facing conformation. Compared to other lipid ATP-binding cassette transporters, ALDP has two substrate binding cavities formed by the transmembrane domains. Such structural organization may be suitable for the coordination of VLCFAs. Based on the structure, we performed integrative analysis of the cellular trafficking, protein thermostability, ATP hydrolysis, and the transport activity of representative mutations. These results provide a framework for understanding the working mechanism of ALDP and pathogenic roles of disease-associated mutations.
History
DepositionOct 21, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Oct 26, 2022Provider: repository / Type: Initial release
Revision 1.1Nov 8, 2023Group: Data collection / Database references
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
B: ATP-binding cassette sub-family D member 1
A: ATP-binding cassette sub-family D member 1


Theoretical massNumber of molelcules
Total (without water)166,0822
Polymers166,0822
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein ATP-binding cassette sub-family D member 1 / Adrenoleukodystrophy protein / ALDP


Mass: 83040.867 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ABCD1, ALD / Cell line (production host): IPLB-Sf-21-AE / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P33897, EC: 7.6.2.4

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Human ATP-binding cassette sub-family D member 1 / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm) / Cell: IPLB-Sf-21-AE
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 1.5625 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.1_4122: / Classification: refinement
CTF correctionType: NONE
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 472168 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0039726
ELECTRON MICROSCOPYf_angle_d0.52913174
ELECTRON MICROSCOPYf_dihedral_angle_d4.0161330
ELECTRON MICROSCOPYf_chiral_restr0.0391482
ELECTRON MICROSCOPYf_plane_restr0.0031670

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