7EHL

Cryo-EM structure of human ABCB8 transporter in nucleotide binding state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Cryo-EM structure of human ABCB8 transporter in nucleotide binding state.

Li, S.Ren, Y.Lu, X.Shen, Y.Yang, X.

(2021) Biochem Biophys Res Commun 557: 187-191

  • DOI: https://doi.org/10.1016/j.bbrc.2021.04.007
  • Primary Citation of Related Structures:  
    7EHL

  • PubMed Abstract: 

    Human ATP-binding cassette transporter 8 of subfamily B (hABCB8) is an ABC transporter that located in the inner membrane of mitochondria. The ABCB8 is involved in the maturation of Fe-S and protects the heart from oxidative stress. Here, we present the cryo-EM structure of human ABCB8 binding with AMPPNP in inward-facing conformation with resolution of 4.1 Å. hABCB8 shows an open-inward conformation when ATP is bound. Unexpectedly, cholesterol molecules were identified in the transmembrane domain of hABCB8. Our results provide structural basis for the transport mechanism of the ABC transporter in mitochondria.


  • Organizational Affiliation

    State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300350, China; College of Life Sciences, Nankai University, Tianjin 100094, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitochondrial potassium channel ATP-binding subunit
A, B
678Homo sapiensMutation(s): 0 
Gene Names: ABCB8MABC1MITOSUR
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NUT2 (Homo sapiens)
Explore Q9NUT2 
Go to UniProtKB:  Q9NUT2
PHAROS:  Q9NUT2
GTEx:  ENSG00000197150 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NUT2
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

Download Ideal Coordinates CCD File 
D [auth A],
I [auth B]
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
CLR
Query on CLR

Download Ideal Coordinates CCD File 
C [auth A],
E [auth A],
G [auth B],
H [auth B]
CHOLESTEROL
C27 H46 O
HVYWMOMLDIMFJA-DPAQBDIFSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
F [auth A],
J [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-05-05
    Type: Initial release
  • Version 1.1: 2024-06-05
    Changes: Data collection, Database references