4DGJ

Structure of a human enteropeptidase light chain variant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of a supercharged variant of the human enteropeptidase light chain.

Simeonov, P.Zahn, M.Strater, N.Zuchner, T.

(2012) Proteins 80: 1907-1910

  • DOI: https://doi.org/10.1002/prot.24084
  • Primary Citation of Related Structures:  
    4DGJ

  • PubMed Abstract: 

    The highly specific serine protease human enteropeptidase light chain cleaves the Asp4Lys recognition sequence and represents an interesting enzyme for biotechnological applications. The human enzyme shows 10 times faster kinetics compared to other animal sources but low solubility under low salt conditions, which hampers protein production and crystallization. Therefore, a supercharged variant (N6D/G21D/G22D/N142D/K210E/C112S) with increased solubility was used for crystallization. The structure (resolution, 1.9 Å) displays a typical α/β trypsin-like serine protease-fold. The mutations introduced for protein supercharging generate larger clusters of negative potential on both sites of the active cleft but do not affect the structural integrity of the protein.


  • Organizational Affiliation

    Institute of Bioanalytical Chemistry, Center for Biotechnology and Biomedicine, Universität Leipzig, 04103 Leipzig, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Enteropeptidase catalytic light chain
A, B, C, D
235Homo sapiensMutation(s): 6 
Gene Names: TMPRSS15ENTKPRSS7
EC: 3.4.21.9
UniProt & NIH Common Fund Data Resources
Find proteins for P98073 (Homo sapiens)
Explore P98073 
Go to UniProtKB:  P98073
PHAROS:  P98073
GTEx:  ENSG00000154646 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP98073
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.170 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.181α = 90
b = 147.704β = 90
c = 148.654γ = 90
Software Package:
Software NamePurpose
MxCuBEdata collection
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-04-18
    Type: Initial release
  • Version 1.1: 2012-04-25
    Changes: Database references
  • Version 1.2: 2012-06-20
    Changes: Database references
  • Version 1.3: 2020-10-21
    Changes: Data collection, Database references