1BOH

SULFUR-SUBSTITUTED RHODANESE (ORTHORHOMBIC FORM)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NH2-terminal sequence truncation decreases the stability of bovine rhodanese, minimally perturbs its crystal structure, and enhances interaction with GroEL under native conditions.

Trevino, R.J.Gliubich, F.Berni, R.Cianci, M.Chirgwin, J.M.Zanotti, G.Horowitz, P.M.

(1999) J.Biol.Chem. 274: 13938-13947

  • Primary Citation of Related Structures:  1BOI

  • PubMed Abstract: 
  • The NH2-terminal sequence of rhodanese influences many of its properties, ranging from mitochondrial import to folding. Rhodanese truncated by >9 residues is degraded in Escherichia coli. Mutant enzymes with lesser truncations are recoverable and act ...

    The NH2-terminal sequence of rhodanese influences many of its properties, ranging from mitochondrial import to folding. Rhodanese truncated by >9 residues is degraded in Escherichia coli. Mutant enzymes with lesser truncations are recoverable and active, but they show altered active site reactivities (Trevino, R. J., Tsalkova, T., Dramer, G., Hardesty, B., Chirgwin, J. M., and Horowitz, P. M. (1998) J. Biol. Chem. 273, 27841-27847), suggesting that the NH2-terminal sequence stabilizes the overall structure. We tested aspects of the conformations of these shortened species. Intrinsic and probe fluorescence showed that truncation decreased stability and increased hydrophobic exposure, while near UV CD suggested altered tertiary structure. Under native conditions, truncated rhodanese bound to GroEL and was released and reactivated by adding ATP and GroES, suggesting equilibrium between native and non-native conformers. Furthermore, GroEL assisted folding of denatured mutants to the same extent as wild type, although at a reduced rate. X-ray crystallography showed that Delta1-7 crystallized isomorphously with wild type in polyethyleneglycol, and the structure was highly conserved. Thus, the missing NH2-terminal residues that contribute to global stability of the native structure in solution do not significantly alter contacts at the atomic level of the crystallized protein. The two-domain structure of rhodanese was not significantly altered by drastically different crystallization conditions or crystal packing suggesting rigidity of the native rhodanese domains and the stabilization of the interdomain interactions by the crystal environment. The results support a model in which loss of interactions near the rhodanese NH2 terminus does not distort the folded native structure but does facilitate the transition in solution to a molten globule state, which among other things, can interact with molecular chaperones.


    Related Citations: 
    • Structure of Sulfur-Substituted Rhodanese at 1.36 A Resolution
      Gliubich, F.,Berni, R.,Colapietro, M.,Barba, L.,Zanotti, G.
      (1998) Acta Crystallogr.,Sect.D 54: 481
    • Active Site Structural Features for Chemically Modified Forms of Rhodanese
      Gliubich, F.,Gazerro, M.,Zanotti, G.,Delbono, S.,Bombieri, G.,Berni, R.
      (1996) J.Biol.Chem. 271: 21054
    • The Structure of Bovine Liver Rhodanese. II. The Active Site in the Sulfur-Substituted and the Sulfur-Free Enzyme
      Ploegman, J.H.,Drent, G.,Kalk, K.H.,Hol, W.G.
      (1979) J.Mol.Biol. 127: 149


    Organizational Affiliation

    Department of Biochemistry, the University of Texas Health Science Center, San Antonio, Texas 78284, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RHODANESE
A
296Bos taurusGene Names: TST
EC: 2.8.1.1
Find proteins for P00586 (Bos taurus)
Go to Gene View: TST
Go to UniProtKB:  P00586
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSS
Query on CSS
A
L-PEPTIDE LINKINGC3 H7 N O2 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.166 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 89.740α = 90.00
b = 72.350β = 90.00
c = 39.070γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
XENGENdata reduction
SAINTdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-04-27
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance