2C0Y

THE CRYSTAL STRUCTURE OF A CYS25ALA MUTANT OF HUMAN PROCATHEPSIN S


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Crystal Structure of a Cys25 -> Ala Mutant of Human Procathepsin S Elucidates Enzyme-Prosequence Interactions.

Kaulmann, G.Palm, G.J.Schilling, K.Hilgenfeld, R.Wiederanders, B.

(2006) Protein Sci. 15: 2619

  • DOI: 10.1110/ps.062401806

  • PubMed Abstract: 
  • The crystal structure of the active-site mutant Cys25 --> Ala of glycosylated human procathepsin S is reported. It was determined by molecular replacement and refined to 2.1 Angstrom resolution, with an R-factor of 0.198. The overall structure is ver ...

    The crystal structure of the active-site mutant Cys25 --> Ala of glycosylated human procathepsin S is reported. It was determined by molecular replacement and refined to 2.1 Angstrom resolution, with an R-factor of 0.198. The overall structure is very similar to other cathepsin L-like zymogens of the C1A clan. The peptidase unit comprises two globular domains, and a small third domain is formed by the N-terminal part of the prosequence. It is anchored to the prosegment binding loop of the enzyme. Prosegment residues beyond the prodomain dock to the substrate binding cleft in a nonproductive orientation. Structural comparison with published data for mature cathepsin S revealed that procathepsin S residues Phe146, Phe70, and Phe211 adopt different orientations. Being part of the S1' and S2 pockets, they may contribute to the selectivity of ligand binding. Regarding the prosequence, length, orientation and anchoring of helix alpha3p differ from related zymogens, thereby possibly contributing to the specificity of propeptide-enzyme interaction in the papain family. The discussion focuses on the functional importance of the most conserved residues in the prosequence for structural integrity, inhibition and folding assistance, considering scanning mutagenesis data published for procathepsin S and for its isolated propeptide.


    Related Citations: 
    • Structure of a Cys25 to Ser Mutant of Human Cathepsin S
      Turkenburg, J.P.,Lamers, M.B.,Brzozowski, A.M.,Wright, L.M.,Hubbard, R.E.,Sturt, S.L.,Williams, D.H.
      (2002) Acta Crystallogr.,Sect.D 58: 451
    • Specificity Determinants of Human Cathepsin S Revealed by Crystal Structures of Complexes
      Pauly, T.A.,Sulea, T.,Ammirati, M.,Sivaraman, J.,Danley, D.E.,Griffor, M.C.,Kamath, A.V.,Wang, I.K.,Laird, E.R.,Seddon, A.P.,Menard, R.,Cygler, M.,Rath, V.L.
      (2003) Biochemistry 42: 3203
    • Crystal Structure of Human Cathepsin S
      Mcgrath, M.E.,Palmer, J.T.,Bromme, D.,Somoza, J.R.
      (1998) Protein Sci. 7: 1294


    Organizational Affiliation

    Institut für Biochemie I, Klinikum der Friedrich-Schiller-Universität Jena, D-07740 Jena, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROCATHEPSIN S
A
315Homo sapiensMutation(s): 1 
Gene Names: CTSS
EC: 3.4.22.27
Find proteins for P25774 (Homo sapiens)
Go to Gene View: CTSS
Go to UniProtKB:  P25774
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.198 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 59.860α = 90.00
b = 140.540β = 90.00
c = 78.610γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-11-08
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance