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- PDB-8z0f: Cryo-EM structure of ATP-bound human very long-chain fatty acid A... -

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Basic information

Entry
Database: PDB / ID: 8z0f
TitleCryo-EM structure of ATP-bound human very long-chain fatty acid ABC transporter ABCD3
ComponentsATP-binding cassette sub-family D member 3
KeywordsTRANSPORT PROTEIN / very long-chain fatty / Peroxisome / ABC transporter
Function / homology
Function and homology information


phytanic acid metabolic process / long-chain fatty acid import into peroxisome / very long-chain fatty acid catabolic process / very long-chain fatty acid metabolic process / Class I peroxisomal membrane protein import / peroxisome organization / fatty acyl-CoA hydrolase activity / ABC transporters in lipid homeostasis / bile acid biosynthetic process / Hydrolases; Acting on ester bonds; Thioester hydrolases ...phytanic acid metabolic process / long-chain fatty acid import into peroxisome / very long-chain fatty acid catabolic process / very long-chain fatty acid metabolic process / Class I peroxisomal membrane protein import / peroxisome organization / fatty acyl-CoA hydrolase activity / ABC transporters in lipid homeostasis / bile acid biosynthetic process / Hydrolases; Acting on ester bonds; Thioester hydrolases / Translocases; Catalysing the translocation of other compounds; Linked to the hydrolysis of a nucleoside triphosphate / peroxisomal membrane / long-chain fatty acid transmembrane transporter activity / bile acid and bile salt transport / fatty acid beta-oxidation / RHOC GTPase cycle / peroxisomal matrix / RHOA GTPase cycle / ATPase-coupled transmembrane transporter activity / ABC-type transporter activity / : / fatty acid biosynthetic process / peroxisome / response to xenobiotic stimulus / intracellular membrane-bounded organelle / protein homodimerization activity / ATP hydrolysis activity / mitochondrion / ATP binding / membrane / 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 ...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
ADENOSINE-5'-TRIPHOSPHATE / ATP-binding cassette sub-family D member 3
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.27 Å
AuthorsLi, Y. / Chen, Y.X. / Zhou, C.Z. / Hou, W.T.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32071206 China
CitationJournal: Cell Discov / Year: 2024
Title: Structural insights into human ABCD3-mediated peroxisomal acyl-CoA translocation.
Authors: Yang Li / Zhi-Peng Chen / Da Xu / Liang Wang / Meng-Ting Cheng / Cong-Zhao Zhou / Yuxing Chen / Wen-Tao Hou /
Abstract: Human ABC transporters ABCD1-3 are all localized on the peroxisomal membrane and participate in the β-oxidation of fatty acyl-CoAs, but they differ from each other in substrate specificity. The ...Human ABC transporters ABCD1-3 are all localized on the peroxisomal membrane and participate in the β-oxidation of fatty acyl-CoAs, but they differ from each other in substrate specificity. The transport of branched-chain fatty acids from cytosol to peroxisome is specifically driven by ABCD3, dysfunction of which causes severe liver diseases such as hepatosplenomegaly. Here we report two cryogenic electron microscopy (cryo-EM) structures of ABCD3 bound to phytanoyl-CoA and ATP at resolutions of 2.9 Å and 3.2 Å, respectively. A pair of phytanoyl-CoA molecules were observed in ABCD3, each binding to one transmembrane domain (TMD), which is distinct from our previously reported structure of ABCD1, where each fatty acyl-CoA molecule strongly crosslinks two TMDs. Upon ATP binding, ABCD3 exhibits a conformation that is open towards the peroxisomal matrix, leaving two extra densities corresponding to two CoA molecules deeply embedded in the translocation cavity. Structural analysis combined with substrate-stimulated ATPase activity assays indicated that the present structures might represent two states of ABCD3 in the transport cycle. These findings advance our understanding of fatty acid oxidation and the molecular pathology of related diseases.
History
DepositionApr 9, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 18, 2024Provider: repository / Type: Initial release
Revision 1.1Apr 23, 2025Group: Data collection / Database references / Structure summary
Category: citation / citation_author ...citation / citation_author / em_admin / pdbx_entry_details
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: ATP-binding cassette sub-family D member 3
B: ATP-binding cassette sub-family D member 3
hetero molecules


Theoretical massNumber of molelcules
Total (without water)154,3714
Polymers153,3562
Non-polymers1,0142
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein ATP-binding cassette sub-family D member 3 / 70 kDa peroxisomal membrane protein / PMP70


Mass: 76678.188 Da / Num. of mol.: 2 / Mutation: E596Q
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ABCD3, PMP70, PXMP1 / Cell line (production host): HEK293F / Production host: Homo sapiens (human)
References: UniProt: P28288, Hydrolases; Acting on ester bonds; Thioester hydrolases, Translocases; Catalysing the translocation of other compounds; Linked to the hydrolysis of a nucleoside triphosphate
#2: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP, energy-carrying molecule*YM
Has ligand of interestY
Has protein modificationN

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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: ATP-bound human peroxisomal ABCD3 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 140 kDa/nm / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenConc.: 10 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 281 K

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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: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1500 nm
Specimen holderCryogen: NITROGEN
Image recordingElectron dose: 54 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameCategory
7cryoSPARCmodel fitting
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 3.27 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 262556 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0029126
ELECTRON MICROSCOPYf_angle_d0.54312296
ELECTRON MICROSCOPYf_dihedral_angle_d5.311230
ELECTRON MICROSCOPYf_chiral_restr0.0391362
ELECTRON MICROSCOPYf_plane_restr0.0031544

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