2HFT

THE CRYSTAL STRUCTURE OF THE EXTRACELLULAR DOMAIN OF HUMAN TISSUE FACTOR AT 1.7 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of the extracellular domain of human tissue factor refined to 1.7 A resolution.

Muller, Y.A.Ultsch, M.H.de Vos, A.M.

(1996) J.Mol.Biol. 256: 144-159

  • DOI: 10.1006/jmbi.1996.0073

  • PubMed Abstract: 
  • Exposure of blood to cells expressing tissue factor results in formation of a high-affinity complex with factor VIIa, initiating the extrinsic pathway of blood coagulation by the activation of factors IX and X. The structure of the extracellular port ...

    Exposure of blood to cells expressing tissue factor results in formation of a high-affinity complex with factor VIIa, initiating the extrinsic pathway of blood coagulation by the activation of factors IX and X. The structure of the extracellular portion of tissue factor was refined to a crystallographic R-value of 20.4% to a resolution of 1.69 A against synchroton data collected from a flash-frozen crystal. The structure consists of two fibronectin type III modules whose hydrophobic cores merge in the domain-domain interface, suggesting that the extracellular portion serves as a relatively rigid template for factor VIIa binding. Analysis of the hydrophobic core of each individual module identifies a cluster of residues forming a packing motif centered on Trp25 which appears to be characteristic for fibronectin type III modules. Comparison of the structure to that of the human growth hormone receptor, which belongs to a different class (class I) of the same cytokine receptor superfamily, shows that the structure of the individual domains is very similar but that the relative domain-domain orientation differs greatly. Even though the WSXWS box characteristic of the class I cytokine receptors is not present in tissue factor, the analogous residues have the identical polyproline helical conformation. Mapping of residues important for biological activity on the structure shows that all these are located on Beta-strands in a small number of distinct clusters, on the opposite side of the molecule compared to the ligand binding determinants of the growth hormone receptor.


    Related Citations: 
    • Analysis of the Factor Viia Binding Site on Human Tissue Factor: Effects of Tissue Factor Mutations on the Kinetics and Thermodynamics of Binding
      Kelley, R.F.,Costas, K.E.,O'Connell, E.M.,Lazarus, R.A.
      (1995) Biochemistry 34: 10383
    • Structure of the Extracellular Domain of Human Tissue Factor: Location of the Factor Viia Binding Site
      Muller, Y.A.,Ultsch, M.H.,Kelley, R.F.,De Vos, A.M.
      (1994) Biochemistry 33: 10864


    Organizational Affiliation

    Department of Protein Engineering, Genentech, Inc. South San Francisco, CA 94080, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HUMAN TISSUE FACTOR
A
218Homo sapiensGene Names: F3
Find proteins for P13726 (Homo sapiens)
Go to Gene View: F3
Go to UniProtKB:  P13726
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.254 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 45.200α = 90.00
b = 45.200β = 90.00
c = 230.800γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
PROLSQrefinement
X-PLORphasing
X-PLORrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-01-29
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance