1DST

MUTANT OF FACTOR D WITH ENHANCED CATALYTIC ACTIVITY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.213 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of a complement factor D mutant expressing enhanced catalytic activity.

Kim, S.Narayana, S.V.Volanakis, J.E.

(1995) J Biol Chem 270: 24399-24405

  • DOI: https://doi.org/10.1074/jbc.270.41.24399
  • Primary Citation of Related Structures:  
    1DST

  • PubMed Abstract: 

    Complement factor D is a serine protease regulated by a novel mechanism that depends on conformational changes rather than cleavage of a zymogen for expression of proteolytic activity. The conformational changes are presumed to be induced by the single natural substrate, C3bB, and to result in reversible reorientation of the catalytic center and of the substrate binding site of factor D, both of which have atypical conformations. Here we report that replacement of Ser94, Thr214, and Ser215 of factor D (chymotrypsinogen numbering has been used for comparison purposes) with the corresponding residues of trypsin, Tyr, Ser, and Trp, is sufficient to induce substantially higher catalytic activity associated with a typical serine protease alignment of the catalytic triad residues His57, Asp102, and Ser195. These results provide a partial structural explanation for the low reactivity of "resting-state" factor D toward synthetic substrates.


  • Organizational Affiliation

    Department of Medicine, University of Alabama at Birmingham 35294-0006, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FACTOR D228Homo sapiensMutation(s): 3 
EC: 3.4.21.46
UniProt & NIH Common Fund Data Resources
Find proteins for P00746 (Homo sapiens)
Explore P00746 
Go to UniProtKB:  P00746
PHAROS:  P00746
GTEx:  ENSG00000197766 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00746
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.213 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.38α = 90
b = 45.38β = 90
c = 175.21γ = 120
Software Package:
Software NamePurpose
XENGENdata collection
XENGENdata reduction
PROLSQrefinement
XENGENdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-07-11
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Other