4YZF

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.274 

wwPDB Validation 3D Report Full Report


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:  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 pre ...

    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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Band 3 anion transport protein
A, B, C, D
911Homo sapiensGene Names: SLC4A1 (AE1, DI, EPB3)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Solute Carrier Family 4 (anion exchanger)
Protein: 
Erythrocyte Band 3 anion exchanger
Find proteins for P02730 (Homo sapiens)
Go to Gene View: SLC4A1
Go to UniProtKB:  P02730
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
FAB fragment of Immunoglobulin (IgG) molecule
E, G, I, K
223N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
FAB fragment of Immunoglobulin (IgG) molecule
F, H, J, L
218N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4KU
Query on 4KU

Download SDF File 
Download CCD File 
A, B, C, 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: 3.5 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.274 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 152.825α = 90.00
b = 171.957β = 101.16
c = 271.700γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
Cootmodel building
xia2data reduction
xia2data scaling
PHENIXrefinement
Omodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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