1BLV

SOLUTION STRUCTURE OF OXIDIZED RAT MICROSOMAL CYTOCHROME B5 IN THE PRESENCE OF 2 M GUANIDINIUM CHLORIDE: MONITORING THE EARLY STEPS IN PROTEIN UNFOLDING


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 40 
  • Conformers Submitted: 
  • Selection Criteria: MINIMIZED AVERAGE STRUCTURE 

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This is version 1.2 of the entry. See complete history


Literature

Solution structure of oxidized rat microsomal cytochrome b5 in the presence of 2 M guanidinium chloride: monitoring the early steps in protein unfolding.

Arnesano, F.Banci, L.Bertini, I.Koulougliotis, D.

(1998) Biochemistry 37: 17082-17092

  • DOI: 10.1021/bi981546p
  • Primary Citation of Related Structures:  
    1BLV

  • PubMed Abstract: 
  • One- and two-dimensional proton NMR spectroscopy has been employed in order to study the denaturation effect of guanidinium chloride (GdmCl) on the oxidized state of the A-form of rat microsomal cytochrome b5 (cyt b5). The protein rapidly starts losing the heme at denaturant concentrations larger than approximately 2 ...

    One- and two-dimensional proton NMR spectroscopy has been employed in order to study the denaturation effect of guanidinium chloride (GdmCl) on the oxidized state of the A-form of rat microsomal cytochrome b5 (cyt b5). The protein rapidly starts losing the heme at denaturant concentrations larger than approximately 2.0 M and a largely unfolded protein is eventually obtained. An estimate of the unfolding kinetics is obtained and, by use of a two-state model (folded left and right arrow unfolded), a value for DeltaG degrees. Below this concentration, small (


    Organizational Affiliation

    Department of Chemistry, University of Florence, Florence, Italy.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (CYTOCHROME B5)A94Rattus norvegicusMutation(s): 0 
Gene Names: Cyb5aCyb5
UniProt
Find proteins for P00173 (Rattus norvegicus)
Explore P00173 
Go to UniProtKB:  P00173
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download Ideal Coordinates CCD File 
B [auth A]PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 40 
  • Conformers Submitted: 
  • Selection Criteria: MINIMIZED AVERAGE STRUCTURE 
  • OLDERADO: 1BLV Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-07-29
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance