1FRT

CRYSTAL STRUCTURE OF THE COMPLEX OF RAT NEONATAL FC RECEPTOR WITH FC


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.5 Å
  • R-Value Work: 0.423 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the complex of rat neonatal Fc receptor with Fc.

Burmeister, W.P.Huber, A.H.Bjorkman, P.J.

(1994) Nature 372: 379-383

  • DOI: 10.1038/372379a0

  • PubMed Abstract: 
  • The neonatal Fc receptor (FcRn) transports maternal immunoglobulin G (IgG) to the bloodstream of the newborn. FcRn is structurally similar to class I major histocompatibility complex (MHC) molecules, despite differences in the ligands they bind (the ...

    The neonatal Fc receptor (FcRn) transports maternal immunoglobulin G (IgG) to the bloodstream of the newborn. FcRn is structurally similar to class I major histocompatibility complex (MHC) molecules, despite differences in the ligands they bind (the Fc portion of IgG and antigenic peptides, respectively). A low-resolution crystal structure of the complex between FcRn and Fc localizes the binding site for Fc to the side of FcRn, distinct from the tops of the alpha 1 and alpha 2 domains which serve as the peptide and T-cell receptor binding sites in class I molecules. FcRn binds to Fc at the interface between the Fc CH2 and CH3 domains, which contains several histidine residues that could account for the sharply pH-dependent FcRn/IgG interaction. A dimer of FcRn heterodimers observed in the co-crystals and in the crystals of FcRn alone could be involved in binding Fc, correlating with the 2:1 binding stoichiometry between FcRn and IgG (ref. 4) and suggesting an unusual orientation of FcRn on the membrane.


    Related Citations: 
    • Investigation of the Interaction between the Class I Mhc-Related Fc Receptor and its Immunoglobulin G Ligand
      Raghavan, M.,Chen, M.Y.,Gastinel, L.N.,Bjorkman, P.J.
      (1994) Immunity 1: 303
    • Crystallographic Refinement and Atomic Models of a Human Fc Fragment and its Complex with Fragment B of Protein a from Staphylococcus Aureus at 2.9-And 2.8-Angstroms Resolution
      Deisenhofer, J.
      (1981) Biochemistry 20: 2361
    • Crystallization and Stoichiometry of Binding of a Complex between a Rat Intestinal Fc Receptor and Fc
      Huber, A.H.,Kelly, R.F.,Gastinel, L.N.,Bjorkman, P.J.
      (1993) J.Mol.Biol. 230: 1077
    • Crystal Structure at 2.2 Angstroms Resolution of the Mhc-Related Neonatal Fc Receptor
      Burmeister, W.P.,Gastinel, L.N.,Simister, N.E.,Blum, M.L.,Bjorkman, P.J.
      (1994) Nature 372: 336


    Organizational Affiliation

    Division of Biology 156-29, California Institute of Technology, Pasadena 91125.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NEONATAL FC RECEPTOR
A
269Rattus norvegicusGene Names: Fcgrt (Fcrn)
Find proteins for P13599 (Rattus norvegicus)
Go to UniProtKB:  P13599
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BETA 2-MICROGLOBULIN
B
99Rattus norvegicusGene Names: B2m
Find proteins for P07151 (Rattus norvegicus)
Go to UniProtKB:  P07151
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
IGG FC
C
205N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAN
Query on MAN

Download SDF File 
Download CCD File 
C
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
FUC
Query on FUC

Download SDF File 
Download CCD File 
A, C
ALPHA-L-FUCOSE
C6 H12 O5
SHZGCJCMOBCMKK-SXUWKVJYSA-N
 Ligand Interaction
GAL
Query on GAL

Download SDF File 
Download CCD File 
C
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
BMA
Query on BMA

Download SDF File 
Download CCD File 
C
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, C
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.5 Å
  • R-Value Work: 0.423 
  • Space Group: I 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 125.000α = 90.00
b = 145.000β = 90.00
c = 216.500γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-02-14
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance