2K8D

Solution structure of a zinc-binding methionine sulfoxide reductase


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure-function relationship in an archaebacterial methionine sulphoxide reductase B.

Carella, M.Becher, J.Ohlenschlager, O.Ramachandran, R.Guhrs, K.H.Wellenreuther, G.Meyer-Klaucke, W.Heinemann, S.H.Gorlach, M.

(2011) Mol Microbiol 79: 342-358

  • DOI: 10.1111/j.1365-2958.2010.07447.x
  • Primary Citation of Related Structures:  
    2K8D

  • PubMed Abstract: 
  • Oxidation of methionine to methionine sulphoxide (MetSO) may lead to loss of molecular integrity and function. This oxidation can be 'repaired' by methionine sulphoxide reductases (MSRs), which reduce MetSO back to methionine. Two structurally unrela ...

    Oxidation of methionine to methionine sulphoxide (MetSO) may lead to loss of molecular integrity and function. This oxidation can be 'repaired' by methionine sulphoxide reductases (MSRs), which reduce MetSO back to methionine. Two structurally unrelated classes of MSRs, MSRA and MSRB, show stereoselectivity towards the S and the R enantiomer of the sulphoxide respectively. Interestingly, these enzymes were even maintained throughout evolution in anaerobic organisms. Here, the activity and the nuclear magnetic resonance (NMR) structure of MTH711, a zinc containing MSRB from the thermophilic, methanogenic archaebacterium Methanothermobacter thermoautotrophicus, are described. The structure appears more rigid as compared with similar MSRBs from aerobic and mesophilic organisms. No significant structural differences between the oxidized and the reduced MTH711 state can be deduced from our NMR data. A stable sulphenic acid is formed at the catalytic Cys residue upon oxidation of the enzyme with MetSO. The two non-zinc-binding cysteines outside the catalytic centre are not necessary for activity of MTH711 and are not situated close enough to the active-site cysteine to serve in regenerating the active centre via the formation of an intramolecular disulphide bond. These findings imply a reaction cycle that differs from that observed for other MSRBs.


    Organizational Affiliation

    Leibniz-Institut für Altersforschung Fritz-Lipmann-Institut, Beutenbergstr. 11, D-07745 Jena, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide methionine sulfoxide reductase msrBA151Methanothermobacter thermautotrophicus str. Delta HMutation(s): 0 
Gene Names: msrBMTH_711
EC: 1.8.4.12
Find proteins for O26807 (Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H))
Explore O26807 
Go to UniProtKB:  O26807
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • OLDERADO: 2K8D Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.2: 2015-10-28
    Changes: Database references