1FWI

KLEBSIELLA AEROGENES UREASE, H134A VARIANT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.170 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Characterization of the mononickel metallocenter in H134A mutant urease.

Park, I.S.Michel, L.O.Pearson, M.A.Jabri, E.Karplus, P.A.Wang, S.Dong, J.Scott, R.A.Koehler, B.P.Johnson, M.K.Hausinger, R.P.

(1996) J Biol Chem 271: 18632-18637

  • DOI: https://doi.org/10.1074/jbc.271.31.18632
  • Primary Citation of Related Structures:  
    1FWI

  • PubMed Abstract: 

    A mutant form of Klebsiella aerogenes urease possessing Ala instead of His at position 134 (H134A) is inactive and binds approximately half the normal complement of nickel (Park, I.-S., and Hausinger, R. P.(1993) Protein Sci. 2, 1034-1041). The crystal structure of the H134A protein was obtained at 2.0-A resolution, and it confirms that only Ni-1 of the two nickel ions found in the native enzyme is present. In contrast to the pseudotetrahedral geometry observed for Ni-1 in native urease (where it is liganded by His-246, His-272, one oxygen atom of carbamylated Lys-217, and a water molecule at partial occupancy), the mononickel metallocenter in the H134A protein was found to possess octahedral geometry and was coordinated by the above protein ligands plus three water molecules. The nickel site of H134A urease was probed by UV-visible, variable temperature magnetic circular dichroism, and x-ray absorption spectroscopies. The spectroscopic data are consistent with the presence of Ni(II) in octahedral geometry coordinated by two histidylimidazoles and additional oxygen and/or nitrogen donors. These data underscore the requirement of Ni-2 for formation of active urease and demonstrate the important role of Ni-2 in establishing the proper Ni-1 coordination geometry.


  • Organizational Affiliation

    Department of Microbiology, Michigan State University, East Lansing, Michigan 48824-1101, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
UREASE100Klebsiella aerogenesMutation(s): 0 
EC: 3.5.1.5
UniProt
Find proteins for P18316 (Klebsiella aerogenes)
Explore P18316 
Go to UniProtKB:  P18316
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP18316
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
UREASE106Klebsiella aerogenesMutation(s): 0 
EC: 3.5.1.5
UniProt
Find proteins for P18315 (Klebsiella aerogenes)
Explore P18315 
Go to UniProtKB:  P18315
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP18315
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
UREASE567Klebsiella aerogenesMutation(s): 2 
EC: 3.5.1.5
UniProt
Find proteins for P18314 (Klebsiella aerogenes)
Explore P18314 
Go to UniProtKB:  P18314
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP18314
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NI
Query on NI

Download Ideal Coordinates CCD File 
D [auth C]NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
KCX
Query on KCX
C
L-PEPTIDE LINKINGC7 H14 N2 O4LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.170 
  • R-Value Observed: 0.170 
  • Space Group: I 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 170.8α = 90
b = 170.8β = 90
c = 170.8γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Derived calculations, Other