1NCF

A NEW PARADIGM FOR TUMOR NECROSIS FACTOR SIGNALLING


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystallographic evidence for dimerization of unliganded tumor necrosis factor receptor.

Naismith, J.H.Devine, T.Q.Brandhuber, B.J.Sprang, S.R.

(1995) J.Biol.Chem. 270: 13303-13307


  • PubMed Abstract: 
  • Activation of the cell surface receptors for tumor necrosis factor (TNF) is effected by the aggregation of cytoplasmic domains that occurs when the extracellular domains of two or three receptors bind to trimeric TNF alpha or TNF beta. The structure ...

    Activation of the cell surface receptors for tumor necrosis factor (TNF) is effected by the aggregation of cytoplasmic domains that occurs when the extracellular domains of two or three receptors bind to trimeric TNF alpha or TNF beta. The structure of the type I TNF receptor extracellular domain (sTNF-R1), crystallized in the absence of TNF, has now been determined at 2.25-A resolution. The receptor itself is an elongated molecule comprising four disulfide-rich domains in a nearly linear array. Contrary to expectations, the unliganded domains are found to associate into dimers of two distinct types, in which monomers are related by local two-fold axes of symmetry. In one case, the receptors are antiparallel to each other and associate through an interface that overlaps the TNF binding site. If intact receptors were capable of such an association, their cytoplasmic domains would be separated by over 100 A. This interaction could inhibit signaling in the absence of TNF. Parallel dimers are also observed in which the dimer interface is well separated from the TNF binding site. Associations among TNF-bound parallel dimers could cause receptor clustering. Both dimers bury substantial areas of protein surface and are formed by polar and non-polar interactions.


    Related Citations: 
    • Crystal Structure of the Soluble Human 55 Kd Tnf Receptor-Human Tnfb Complex: Implication for Tnf Receptor Activation
      Banner, D.W.,Arcy, A.,Janes, W.,Gentz, R.,Schoenfield, H.,Broger, C.,Loetscher, H.,Lesslauer, W.
      (1993) Cell 73: 431
    • Two Crystal Forms of the Extracellular Domain of Type I Tumor Necrosis Factor Receptor
      Rodseth, L.E.,Brandhuber, B.,Devine, T.Q.,Eck, M.J.,Hale, K.,Naismith, J.H.,Sprang, S.R.
      (1994) J.Mol.Biol. 239: 332


    Organizational Affiliation

    Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas 75235-9050, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TUMOR NECROSIS FACTOR RECEPTOR
A, B
162Homo sapiensMutation(s): 0 
Gene Names: TNFRSF1A (TNFAR, TNFR1)
Find proteins for P19438 (Homo sapiens)
Go to Gene View: TNFRSF1A
Go to UniProtKB:  P19438
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.193 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 69.000α = 90.00
b = 69.000β = 90.00
c = 185.200γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance