2DH3

Crystal Structure of human ED-4F2hc

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

The structure of human 4F2hc ectodomain provides a model for homodimerization and electrostatic interaction with plasma membrane.

Fort, J., de la Ballina, L.R., Burghardt, H.E., Ferrer-Costa, C., Turnay, J., Ferrer-Orta, C., Uson, I., Zorzano, A., Fernandez-Recio, J., Orozco, M., Lizarbe, M.A., Fita, I., Palacin, M.

(2007) J.Biol.Chem. 282: 31444-31452

  • DOI: 10.1074/jbc.M704524200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • 4F2hc (CD98hc) is a multifunctional type II membrane glycoprotein involved in amino acid transport and cell fusion, adhesion, and transformation. The structure of the ectodomain of human 4F2hc has been solved using monoclinic (Protein Data Bank code ...

    4F2hc (CD98hc) is a multifunctional type II membrane glycoprotein involved in amino acid transport and cell fusion, adhesion, and transformation. The structure of the ectodomain of human 4F2hc has been solved using monoclinic (Protein Data Bank code 2DH2) and orthorhombic (Protein Data Bank code 2DH3) crystal forms at 2.1 and 2.8 A, respectively. It is composed of a (betaalpha)(8) barrel and an antiparallel beta(8) sandwich related to bacterial alpha-glycosidases, although lacking key catalytic residues and consequently catalytic activity. 2DH3 is a dimer with Zn(2+) coordination at the interface. Human 4F2hc expressed in several cell types resulted in cell surface and Cys(109) disulfide bridge-linked homodimers with major architectural features of the crystal dimer, as demonstrated by cross-linking experiments. 4F2hc has no significant hydrophobic patches at the surface. Monomer and homodimer have a polarized charged surface. The N terminus of the solved structure, including the position of Cys(109) residue located four residues apart from the transmembrane domain, is adjacent to the positive face of the ectodomain. This location of the N terminus and the Cys(109)-intervening disulfide bridge imposes space restrictions sufficient to support a model for electrostatic interaction of the 4F2hc ectodomain with membrane phospholipids. These results provide the first crystal structure of heteromeric amino acid transporters and suggest a dynamic interaction of the 4F2hc ectodomain with the plasma membrane.

    Organizational Affiliation: 

    Barcelona Science Park and the Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona and Centro de Investigación Biomédica en Red de Enfermedades Raras, E-08028 Barcelona, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
4F2 cell-surface antigen heavy chain
A, B
424Homo sapiensMutation(s): 0 
Gene Names: SLC3A2 (MDU1)
Find proteins for P08195 (Homo sapiens)
Go to Gene View: SLC3A2
Go to UniProtKB:  P08195
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN
Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.217 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 69.497α = 90.00
b = 101.786β = 90.00
c = 121.966γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-27
    Type: Initial release
  • Version 1.1: 2007-10-05
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance