1F6Y

MAD CRYSTAL STRUCTURE ANALYSIS OF METHYLTETRAHYDROFOLATE: CORRINOID/IRON-SULFUR PROTEIN METHYLTRANSFERASE (METR)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Crystal structure of a methyltetrahydrofolate- and corrinoid-dependent methyltransferase.

Doukov, T.Seravalli, J.Stezowski, J.J.Ragsdale, S.W.

(2000) Structure 8: 817-830

  • DOI: 10.1016/s0969-2126(00)00172-6
  • Primary Citation of Related Structures:  
    1F6Y

  • PubMed Abstract: 
  • Methyltetrahydrofolate, corrinoid iron-sulfur protein methyltransferase (MeTr), catalyzes a key step in the Wood-Ljungdahl pathway of carbon dioxide fixation. It transfers the N5-methyl group from methyltetrahydrofolate (CH3-H4folate) to a cob(I)amid ...

    Methyltetrahydrofolate, corrinoid iron-sulfur protein methyltransferase (MeTr), catalyzes a key step in the Wood-Ljungdahl pathway of carbon dioxide fixation. It transfers the N5-methyl group from methyltetrahydrofolate (CH3-H4folate) to a cob(I)amide center in another protein, the corrinoid iron-sulfur protein. MeTr is a member of a family of proteins that includes methionine synthase and methanogenic enzymes that activate the methyl group of methyltetra-hydromethano(or -sarcino)pterin. We report the first structure of a protein in this family.


    Related Citations: 
    • Preliminary X-ray Crystallographic Study of Methyltetrahydrofolate: Corrinoid/Iron-Sulfur Protein Methyltransferase from Clostridium thermoaceticum
      Doukov, T.I., Zhao, S., Ross II, C.R., Roberts, D.L., Kim, J.J., Ragsdale, S.W., Stezowski, J.J.
      (1995) Acta Crystallogr D Biol Crystallogr 51: 1092
    • The Reductive Acetyl Coenzyme A Pathway: Sequence and Heterologous Expression of Active Methyltetrahydrofolate:Corrinoid/Iron-Sulfur Protein Methyltransferase from Clostridium thermoaceticum
      Roberts, D.L., Zhao, S., Doukov, T., Ragsdale, S.W.
      (1994) J Bacteriol 176: 6127
    • Binding of (6R,S)-Methyltetrahydrofolate to Methyltransferase from Clostridium thermoaceticum: Role of Protonation of Methyltetrahydrofolate in the Mechanism of Methyl Transfer
      Seravalli, J., Shoemaker, R.K., Sudbeck, M.L., Ragsdale, S.W.
      (1999) Biochemistry 38: 5736
    • Mechanism of Transfer of the Methyl Group from (6S)-Methyltetrahydrofolate to the Corrinoid/Iron-Sulfur Protein Catalyzed by the Methyltransferase from Clostridium thermoaceticum: A Key Step in the Wood-Ljungdahl Pathway of Acetyl-CoA Synthesis
      Seravalli, J., Zhao, S., Ragsdale, S.W.
      (1999) Biochemistry 38: 5728

    Organizational Affiliation

    Department of Chemistry, University of Nebraska-Lincoln, 68503, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
5-METHYLTETRAHYDROFOLATE CORRINOID/IRON SULFUR PROTEIN METHYLTRANSFERASEAB262Moorella thermoacetica ATCC 39073Mutation(s): 0 
EC: 2.1.1.258
Find proteins for Q46389 (Moorella thermoacetica)
Explore Q46389 
Go to UniProtKB:  Q46389
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65α = 90
b = 89.412β = 90
c = 115.385γ = 90
Software Package:
Software NamePurpose
SHELXSphasing
SHELXL-97refinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-08-31
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 1.4: 2018-01-31
    Changes: Database references