2BJ8

NIKR IN CLOSED CONFORMATION AND NICKEL BOUND TO HIGH and LOW-AFFINITY SITES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.200 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of Pyrococcus Horikoshii Nikr: Nickel Sensing and Implications for the Regulation of DNA Recognition

Chivers, P.T.Tahirov, T.H.

(2005) J Mol Biol 348: 597

  • DOI: 10.1016/j.jmb.2005.03.017
  • Primary Citation of Related Structures:  
    2BJ1, 2BJ9, 2BJ8, 2BJ7, 2BJ3

  • PubMed Abstract: 
  • The Pyrococcus horikoshii OT3 genome contains a gene (PH0601 or nikR) encoding a protein (PhNikR) that shares 33.8% amino acid sequence identity with Escherichia coli nickel responsive repressor NikR (EcNikR), including many residues that are functionally important in the E ...

    The Pyrococcus horikoshii OT3 genome contains a gene (PH0601 or nikR) encoding a protein (PhNikR) that shares 33.8% amino acid sequence identity with Escherichia coli nickel responsive repressor NikR (EcNikR), including many residues that are functionally important in the E.coli ortholog. We succeeded in crystallization and structural characterization of PhNikR in the apo form and two nickel bound forms that exhibit different conformations, open and closed. Moreover, we have identified a putative "low-affinity" nickel-binding pocket in the closed form. This binding site has unusual nickel coordination and exhibits high sensitivity to phosphate in the crystal structure. Analysis of the PhNikR structures and structure-based mutational studies with EcNikR reveals a plausible mechanism of nickel-dependent promoter recognition by the NikR family of proteins.


    Related Citations: 
    • Crystallization and Preliminary Crystallographic Analysis of the Nickel-Responsive Regulator Nikr from Pyrococcus Horikoshii
      Kitao, T., Kuroishi, C., Tahirov, T.H.
      (2005) Acta Crystallogr Sect F Struct Biol Cryst Commun 61: 43

    Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NICKEL RESPONSIVE REGULATORA, B138Pyrococcus horikoshii OT3Mutation(s): 0 
Gene Names: PH0601
UniProt
Find proteins for O58316 (Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3))
Explore O58316 
Go to UniProtKB:  O58316
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

Download Ideal Coordinates CCD File 
E [auth A]4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
PG4
Query on PG4

Download Ideal Coordinates CCD File 
D [auth A]TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
K [auth B]1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
NI
Query on NI

Download Ideal Coordinates CCD File 
C [auth A], F [auth B], G [auth B], H [auth B], I [auth B], L [auth B]NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
J [auth B]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.200 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 110.208α = 90
b = 110.208β = 90
c = 78.6γ = 120
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2005-01-31 
  • Released Date: 2005-04-08 
  • Deposition Author(s): Tahirov, T.H.

Revision History  (Full details and data files)

  • Version 1.0: 2005-04-08
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance