1FI3

SOLUTION STRUCTURE OF THE M61H MUTANT OF PSEUDOMONAS STUTZERI SUBSTRAIN ZOBELL FERROCYTOCHROME C-551


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution conformation of the Met 61 to His 61 mutant of Pseudomonas stutzeri ZoBell ferrocytochrome c-551.

Miller, G.T.Hardman, J.K.Timkovich, R.

(2001) Biophys.J. 80: 2928-2934

  • DOI: 10.1016/S0006-3495(01)76258-3

  • PubMed Abstract: 
  • The gene encoding for bacterial cytochrome c-551 from Pseudomonas stutzeri substrain ZoBell has been mutated to convert the invariant sixth ligand methionine residue into histidine, creating the site-specific mutant M61H. Proton NMR resonance assignm ...

    The gene encoding for bacterial cytochrome c-551 from Pseudomonas stutzeri substrain ZoBell has been mutated to convert the invariant sixth ligand methionine residue into histidine, creating the site-specific mutant M61H. Proton NMR resonance assignments were made for all main-chain and most-side chain protons in the diamagnetic, reduced form at pH 9.2 and 333 K by two-dimensional NMR techniques. Distance constraints (1074) were determined from nuclear Overhauser enhancements and main-chain torsion-angle constraints (72) from scalar coupling estimates. Solution conformations for the protein were computed by the simulated annealing approach. For 28 computed structures, the root mean squared displacement from the average structure excluding the terminal residues 1, 2, 81, and 82 was 0.52 A (sigma = 0.096) for backbone atoms and 0.90 A (sigma = 0.122) for all heavy atoms. The global folding of the mutant protein is the same as for wild type. The biggest changes are localized in a peptide span over residues 60-65. The most striking behavior of the mutant protein is that at room temperature and neutral pH it exists in a state similar to the molten globular state that has been described for several proteins under mild denaturing conditions, but the mutant converts to a more ordered state at high pH and temperature.


    Organizational Affiliation

    Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, USA.




Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYTOCHROME C-551
A
82Pseudomonas stutzeriMutation(s): 1 
Gene Names: nirM
Find proteins for P00101 (Pseudomonas stutzeri)
Go to UniProtKB:  P00101
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEC
Query on HEC

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Download CCD File 
A
HEME C
C34 H34 Fe N4 O4
HXQIYSLZKNYNMH-LJNAALQVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-03-14
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance