2PKC

CRYSTAL STRUCTURE OF CALCIUM-FREE PROTEINASE K AT 1.5 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of calcium-free proteinase K at 1.5-A resolution.

Muller, A.Hinrichs, W.Wolf, W.M.Saenger, W.

(1994) J.Biol.Chem. 269: 23108-23111

  • DOI: 10.2210/pdb2pkc/pdb

  • PubMed Abstract: 
  • Proteinase K from the fungus Tritirachium album Limber binds two Ca2+ ions, one strongly (Ca 1) and the other weakly (Ca 2). Removal of these cations reduces the stability of proteinase K as shown by thermal denaturation, but the proteolytic activity ...

    Proteinase K from the fungus Tritirachium album Limber binds two Ca2+ ions, one strongly (Ca 1) and the other weakly (Ca 2). Removal of these cations reduces the stability of proteinase K as shown by thermal denaturation, but the proteolytic activity is unchanged. The x-ray structures of native and Ca(2+)-free proteinase K at 1.5-A resolution show that there are no cuts in the polypeptide backbone (i.e. no autolysis), Ca 1 has been replaced by Na+, while Ca 2 has been substituted by a water associated with a larger but locally confined structural change at that site. A small but concerted geometrical shift is transmitted from the Ca 1 site via eight secondary structure elements to the substrate recognition site (Gly100-Tyr104, and Ser132-Gly136) but not to the catalytic triad (Asp39,His69,Ser224). This is accompanied by positional changes of localized waters.


    Related Citations: 
    • Long-Range Structural Changes in Proteinase K Triggered by Calcium Ion Removal
      Bajorath, J.,Raghunathan, S.,Hinrichs, W.,Saenger, W.
      (1989) Nature 337: 481
    • Three-Dimensional Structure of Proteinase K at 0.15-Nm Resolution
      Betzel, C.,Pal, G.P.,Saenger, W.
      (1986) Eur.J.Biochem. 178: 155


    Organizational Affiliation

    Institut für Kristallographie, Freie Universität Berlin, Federal Republic of Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEINASE K
A
279Parengyodontium albumMutation(s): 0 
Gene Names: PROK
EC: 3.4.21.64
Find proteins for P06873 (Parengyodontium album)
Go to UniProtKB:  P06873
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 68.270α = 90.00
b = 68.270β = 90.00
c = 108.080γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other