1PV9

Prolidase from Pyrococcus furiosus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.246 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of the Prolidase from Pyrococcus furiosus.

Maher, M.J.Ghosh, M.Grunden, A.M.Menon, A.L.Adams, M.W.Freeman, H.C.Guss, J.M.

(2004) Biochemistry 43: 2771-2783

  • DOI: 10.1021/bi0356451
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The structure of prolidase from the hyperthermophilic archaeon Pyrococcus furiosus (Pfprol) has been solved and refined at 2.0 A resolution. This is the first structure of a prolidase, i.e., a peptidase specific for dipeptides having proline as the s ...

    The structure of prolidase from the hyperthermophilic archaeon Pyrococcus furiosus (Pfprol) has been solved and refined at 2.0 A resolution. This is the first structure of a prolidase, i.e., a peptidase specific for dipeptides having proline as the second residue. The asymmetric unit of the crystals contains a homodimer of the enzyme. Each of the two protein subunits has two domains. The C-terminal domain includes the catalytic site, which is centered on a dinuclear metal cluster. In the as-isolated form of Pfprol, the active-site metal atoms are Co(II) [Ghosh, M., et al. (1998) J. Bacteriol. 180, 4781-9]. An unexpected finding is that in the crystalline enzyme the active-site metal atoms are Zn(II), presumably as a result of metal exchange during crystallization. Both of the Zn(II) atoms are five-coordinate. The ligands include a bridging water molecule or hydroxide ion, which is likely to act as a nucleophile in the catalytic reaction. The two-domain polypeptide fold of Pfprol is similar to the folds of two functionally related enzymes, aminopeptidase P (APPro) and creatinase. In addition, the catalytic C-terminal domain of Pfprol has a polypeptide fold resembling that of the sole domain of a fourth enzyme, methionine aminopeptidase (MetAP). The active sites of APPro and MetAP, like that of Pfprol, include a dinuclear metal center. The metal ligands in the three enzymes are homologous. Comparisons with the molecular structures of APPro and MetAP suggest how Pfprol discriminates against oligopeptides and in favor of Xaa-Pro substrates. The crystal structure of Pfprol was solved by multiple-wavelength anomalous dispersion. The crystals yielded diffraction data of relatively high quality and resolution, despite the fact that one of the two protein subunits in the asymmetric unit was found to be significantly disordered. The final R and R(free) values are 0.24 and 0.28, respectively.


    Related Citations: 
    • Crystallization and Characterization of the Prolidase from Pyrococcus furiosus.
      Willingham, K., Maher, M.J., Grunden, A.M., Ghosh, M., Adams, M.W.W., Freeman, H.C., Guss, J.M.
      (2001) Acta Crystallogr D Biol Crystallogr 57: 428
    • Characterization of Native and Recombinant Forms of an Unusual Cobalt-Dependent Proline Dipeptidase (Prolidase) from the Hyperthermophilic Archaeon Pyrococcus furiosus.
      Ghosh, M., Grunden, A.M., Dunn, D.M., Weiss, R., Adams, M.W.W.
      (1998) J Bacteriol 180: 4781

    Organizational Affiliation

    School of Molecular and Microbial Biosciences, University of Sydney, New South Wales 2006, Australia.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Xaa-Pro dipeptidase
A, B
348Pyrococcus furiosusMutation(s): 0 
Gene Names: PEPQ OR PF1343
EC: 3.4.13.9
Find proteins for P81535 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Go to UniProtKB:  P81535
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.246 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.476α = 90
b = 97.227β = 97.09
c = 69.882γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-03-23
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance