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 
  • R-Value Observed: 0.204 

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
  • Primary Citation of Related Structures:  
    2HFT

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HUMAN TISSUE FACTORA218Homo sapiensMutation(s): 0 
Gene Names: F3
Find proteins for P13726 (Homo sapiens)
Explore P13726 
Go to UniProtKB:  P13726
NIH Common Fund Data Resources
PHAROS  P13726
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates 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 
  • R-Value Observed: 0.204 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.2α = 90
b = 45.2β = 90
c = 230.8γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
PROLSQrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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