4NIW

Crystal structure of trypsiligase (K60E/N143H/Y151H/D189K trypsin) orthorhombic form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.31 Å
  • R-Value Free: 0.155 
  • R-Value Work: 0.128 
  • R-Value Observed: 0.130 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

N-terminal protein modification by substrate-activated reverse proteolysis.

Liebscher, S.Schopfel, M.Aumuller, T.Sharkhuukhen, A.Pech, A.Hoss, E.Parthier, C.Jahreis, G.Stubbs, M.T.Bordusa, F.

(2014) Angew Chem Int Ed Engl 53: 3024-3028

  • DOI: https://doi.org/10.1002/anie.201307736
  • Primary Citation of Related Structures:  
    4NIV, 4NIW, 4NIX, 4NIY

  • PubMed Abstract: 

    Although site-specific incorporation of artificial functionalities into proteins is an important tool in both basic and applied research, it can be a major challenge to protein chemists. Enzymatic protein modification is an attractive goal due to the inherent regio- and stereoselectivity of enzymes, yet their specificity remains a problem. As a result of the intrinsic reversibility of enzymatic reactions, proteinases can in principle catalyze ligation reactions. While this makes them attractive tools for site-specific protein bioconjugation, competing hydrolysis reactions limits their general use. Here we describe the design and application of a highly specific trypsin variant for the selective modification of N-terminal residues of diverse proteins with various reagents. The modification proceeds quantitatively under native (aqueous) conditions. We show that the variant has a disordered zymogen-like activation domain, effectively suppressing the hydrolysis reaction, which is converted to an active conformation in the presence of appropriate substrates.


  • Organizational Affiliation

    Institute of Biochemistry/Biotechnology, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 3, 06120 Halle/Saale (Germany).


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cationic trypsin223Bos taurusMutation(s): 4 
EC: 3.4.21.4
UniProt
Find proteins for P00760 (Bos taurus)
Explore P00760 
Go to UniProtKB:  P00760
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00760
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.31 Å
  • R-Value Free: 0.155 
  • R-Value Work: 0.128 
  • R-Value Observed: 0.130 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.522α = 90
b = 58.607β = 90
c = 66.831γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-02-19
    Type: Initial release
  • Version 1.1: 2014-03-19
    Changes: Database references