2DXC

Recombinant thiocyanate hydrolase, fully-matured form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.171 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural Basis for Catalytic Activation of Thiocyanate Hydrolase Involving Metal-Ligated Cysteine Modification

Arakawa, T.Kawano, Y.Katayama, Y.Nakayama, H.Dohmae, N.Yohda, M.Odaka, M.

(2009) J Am Chem Soc 131: 14838-14843

  • DOI: 10.1021/ja903979s
  • Primary Citation of Related Structures:  
    2DXB, 2DXC, 2ZZD

  • PubMed Abstract: 
  • Thiocyanate hydrolase (SCNase) is a member of a family of nitrile hydratase proteins, each of which contains a unique noncorrin cobalt center with two post-translationally modified cysteine ligands, cysteine-sulfenic acid or -sulfenate (Cys-SO(H)), and cysteine-sulfininate (Cys-SO(2)(-)), respectively ...

    Thiocyanate hydrolase (SCNase) is a member of a family of nitrile hydratase proteins, each of which contains a unique noncorrin cobalt center with two post-translationally modified cysteine ligands, cysteine-sulfenic acid or -sulfenate (Cys-SO(H)), and cysteine-sulfininate (Cys-SO(2)(-)), respectively. We have found that a partially matured recombinant SCNase was activated during storage. The crystal structures of SCNase before and after storage demonstrated that Cys-SO(2)(-) modification of gammaCys131 proceeded to completion prior to storage, while Cys-SO(H) modification of gammaCys133 occurred during storage. SCNase activity was suppressed when gammaCys133 was further oxidized to Cys-SO(2)(-). The correlation between the catalytic activity and the extent of the gammaCys133 modification indicates that the cysteine sulfenic acid modification of gammaCys133 is of primary importance in determining the activity of SCNase.


    Organizational Affiliation

    Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Thiocyanate hydrolase subunit alphaA, D, G, J126Thiobacillus thioparusMutation(s): 0 
Gene Names: scnA
EC: 3.5.5.8
UniProt
Find proteins for O66187 (Thiobacillus thioparus)
Explore O66187 
Go to UniProtKB:  O66187
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Thiocyanate hydrolase subunit betaB, E, H, K157Thiobacillus thioparusMutation(s): 0 
Gene Names: scnB
EC: 3.5.5.8
UniProt
Find proteins for O66186 (Thiobacillus thioparus)
Explore O66186 
Go to UniProtKB:  O66186
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Thiocyanate hydrolase subunit gammaC, F, I, L243Thiobacillus thioparusMutation(s): 0 
Gene Names: scnC
EC: 3.5.5.8
UniProt
Find proteins for O66188 (Thiobacillus thioparus)
Explore O66188 
Go to UniProtKB:  O66188
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
CSD
Query on CSD
C, F, I, LL-PEPTIDE LINKINGC3 H7 N O4 SCYS
CSO
Query on CSO
C, F, I, LL-PEPTIDE LINKINGC3 H7 N O3 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.171 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.874α = 90
b = 170.531β = 90
c = 175.152γ = 90
Software Package:
Software NamePurpose
CNSrefinement
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-08-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Derived calculations, Version format compliance