1S18

Structure and protein design of human apyrase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure and protein design of a human platelet function inhibitor.

Dai, J.Liu, J.Deng, Y.Smith, T.M.Lu, M.

(2004) Cell 116: 649-659

  • DOI: https://doi.org/10.1016/s0092-8674(04)00172-2
  • Primary Citation of Related Structures:  
    1S18, 1S1D

  • PubMed Abstract: 

    Hematophagous arthropods secrete a salivary apyrase that inhibits platelet activation by catabolizing ADP released from damaged tissues and blood cells. We report the X-ray crystal structures of a human enzyme of the soluble apyrase family in its apo state and bound to a substrate analog. The structures reveal a nucleotide binding domain comprising a five-blade beta propeller, binding determinants of the substrate and the active site, and an unusual calcium binding site with a potential regulatory function. Using a comparative structural biology approach, we were able to redesign the human apyrase so as to enhance its ADPase activity by more than 100-fold. The engineered enzyme is a potent inhibitor of platelet aggregation and may serve as the basis for the development of a new class of antithrombotic agents.


  • Organizational Affiliation

    Department of Biochemistry, Weill Medical College of Cornell University, New York, NY 10021, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
apyrase
A, B
331Homo sapiensMutation(s): 0 
Gene Names: SHAPY
EC: 3.6.1.5 (PDB Primary Data), 3.6.1.6 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WVQ1 (Homo sapiens)
Explore Q8WVQ1 
Go to UniProtKB:  Q8WVQ1
PHAROS:  Q8WVQ1
GTEx:  ENSG00000171302 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8WVQ1
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
TRS
Query on TRS

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth A]
L [auth B]
M [auth B]
E [auth A],
F [auth A],
G [auth A],
L [auth B],
M [auth B],
N [auth B],
O [auth B]
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
ACT
Query on ACT

Download Ideal Coordinates CCD File 
D [auth A],
I [auth B],
J [auth B],
K [auth B]
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth A],
H [auth B]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.163α = 99.44
b = 52.501β = 106.58
c = 77.925γ = 99.89
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-03-16
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-14
    Changes: Data collection, Database references, Derived calculations