4YZF

Crystal structure of the anion exchanger domain of human erythrocyte Band 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.274 
  • R-Value Observed: 0.275 

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This is version 1.1 of the entry. See complete history


Literature

Crystal structure of the anion exchanger domain of human erythrocyte band 3.

Arakawa, T.Kobayashi-Yurugi, T.Alguel, Y.Iwanari, H.Hatae, H.Iwata, M.Abe, Y.Hino, T.Ikeda-Suno, C.Kuma, H.Kang, D.Murata, T.Hamakubo, T.Cameron, A.D.Kobayashi, T.Hamasaki, N.Iwata, S.

(2015) Science 350: 680-684

  • DOI: 10.1126/science.aaa4335
  • Primary Citation of Related Structures:  
    4YZF, 5A16

  • PubMed Abstract: 
  • Anion exchanger 1 (AE1), also known as band 3 or SLC4A1, plays a key role in the removal of carbon dioxide from tissues by facilitating the exchange of chloride and bicarbonate across the plasma membrane of erythrocytes. An isoform of AE1 is also present in the kidney ...

    Anion exchanger 1 (AE1), also known as band 3 or SLC4A1, plays a key role in the removal of carbon dioxide from tissues by facilitating the exchange of chloride and bicarbonate across the plasma membrane of erythrocytes. An isoform of AE1 is also present in the kidney. Specific mutations in human AE1 cause several types of hereditary hemolytic anemias and/or distal renal tubular acidosis. Here we report the crystal structure of the band 3 anion exchanger domain (AE1(CTD)) at 3.5 angstroms. The structure is locked in an outward-facing open conformation by an inhibitor. Comparing this structure with a substrate-bound structure of the uracil transporter UraA in an inward-facing conformation allowed us to identify the anion-binding position in the AE1(CTD), and to propose a possible transport mechanism that could explain why selected mutations lead to disease.


    Organizational Affiliation

    Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO) Human Receptor Crystallography Project, Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan. JST, Research Acceleration Program, Membrane Protein Crystallography Project, Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan. Department of Cell Biology, Kyoto University Faculty of Medicine, Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan. Division of Molecular Biosciences, Membrane Protein Crystallography group, Imperial College London, London SW7 2AZ, UK. Membrane Protein Laboratory, Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Chilton, Oxfordshire OX11 0DE, UK. Research Complex at Harwell Rutherford, Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0FA, UK. Platform for Drug Discovery, Informatics, and Structural Life Science, Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Band 3 anion transport proteinA, B, C, D911Homo sapiensMutation(s): 0 
Gene Names: SLC4A1AE1DIEPB3
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P02730 (Homo sapiens)
Explore P02730 
Go to UniProtKB:  P02730
PHAROS:  P02730
GTEx:  ENSG00000004939 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02730
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
FAB fragment of Immunoglobulin (IgG) moleculeE, G, I, K223Mus musculusMutation(s): 0 
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Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
FAB fragment of Immunoglobulin (IgG) moleculeF, H, J, L218Mus musculusMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4KU
Query on 4KU

Download Ideal Coordinates CCD File 
M [auth A],
N [auth B],
O [auth C],
P [auth D]
2,2'-ethane-1,2-diylbis{5-[(sulfanylmethyl)amino]benzenesulfonic acid}
C16 H20 N2 O6 S4
LJEHNCSYWIAXRX-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.274 
  • R-Value Observed: 0.275 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 152.825α = 90
b = 171.957β = 101.16
c = 271.7γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
SHARPphasing
Cootmodel building
Omodel building
xia2data scaling

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-11-04
    Type: Initial release
  • Version 1.1: 2015-11-18
    Changes: Database references