1JOU

Crystal Structure of Native S195A Thrombin with an Unoccupied Active Site

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

The molecular basis of thrombin allostery revealed by a 1.8A structure of the slow form

Huntington, J.A., Esmon, C.T.

(2003) Structure 11: 469-479

  • DOI: 10.1016/s0969-2126(03)00049-2
  • Structures With Same Primary Citation

  • PubMed Abstract: 

    • Thrombin participates in its own positive and negative feedback loops, and its allosteric state helps determine the hemostatic balance. Here we present the 1.8 A crystallographic structure of S195A thrombin in two conformational states: active site o ...

    Thrombin participates in its own positive and negative feedback loops, and its allosteric state helps determine the hemostatic balance. Here we present the 1.8 A crystallographic structure of S195A thrombin in two conformational states: active site occupied and active site free. The active site-occupied form shows how thrombin can accommodate substrates, such as protein C. The active site-free form is in a previously unobserved closed conformation of thrombin, which satisfies all the conditions of the so-called "slow" form. A mechanism of allostery is revealed, which relies on the concerted movement of the disulphide bond between Cys168 and 182 and aromatic residues Phe227, Trp215, and Trp60d. These residues constitute an allosteric switch, which is flipped directly through sodium binding, resulting in the fast form with an open active site.

    Organizational Affiliation: 

    Department of Haematology, University of Cambridge, Cambridge Institute for Medical Research, Wellcome Trust/MRC Building, Hills Road, CB2 2XY, Cambridge, United Kingdom. jah52@cam.ac.uk



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thrombin, light chain
A, C, E
49Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens)
Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734
GTEx  ENSG00000180210
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Thrombin, heavy chain
B, D, F
259Homo sapiensMutation(s): 1 
Gene Names: F2
EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens)
Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734
GTEx  ENSG00000180210
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NDG
Query on NDG
Download CCD File 
B, F
2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE
C8 H15 N O6
OVRNDRQMDRJTHS-PVFLNQBWSA-N		 Ligand Interaction
GOL
Query on GOL
Download CCD File 
B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
ACY
Query on ACY
Download CCD File 
B, D, F
ACETIC ACID
C2 H4 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-N		 Ligand Interaction
NA
Query on NA
Download CCD File 
B, D, F
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.222 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.23α = 90
b = 76.58β = 106.64
c = 97.32γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
CNSrefinement
CCP4data scaling

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-08-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance