1FRT

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.50 Å
  • R-Value Work: 0.423 
  • R-Value Observed: 0.423 

wwPDB Validation   3D Report Full Report



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
  • Primary Citation of Related Structures:  
    1FRT

  • 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: 
    • 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
    • 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
    • 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
    • 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

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NEONATAL FC RECEPTORA269Rattus norvegicusMutation(s): 0 
Gene Names: BETA-2-MICROGLOBULINFcgrtFcrn
Find proteins for P13599 (Rattus norvegicus)
Explore P13599 
Go to UniProtKB:  P13599
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
BETA 2-MICROGLOBULINB99Rattus norvegicusMutation(s): 0 
Gene Names: BETA-2-MICROGLOBULINB2m
Find proteins for P07151 (Rattus norvegicus)
Explore P07151 
Go to UniProtKB:  P07151
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
IGG FCC205Rattus norvegicusMutation(s): 0 
Gene Names: BETA-2-MICROGLOBULIN
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose
D
2 N-Glycosylation Oligosaccharides Interaction
Entity ID: 5
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
E
9 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.50 Å
  • R-Value Work: 0.423 
  • R-Value Observed: 0.423 
  • Space Group: I 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 125α = 90
b = 145β = 90
c = 216.5γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-02-14
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2020-02-05
    Changes: Advisory, Data collection, Database references, Derived calculations, Other
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary