1QLM

The crystal structure of methenyltetrahydromethanopterin cyclohydrolase from the hyperthermophilic archaeon Methanopyrus kandleri


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Crystal Structure of Methenyltetrahydromethano- Pterin Cyclohydrolase from the Hyperthermophilic Archaeon Methanopyrus Kandleri

Grabarse, W.Vaupel, M.Vorholt, J.A.Shima, S.Thauer, R.K.Wittershagen, A.Bourenkov, G.Bartunik, H.D.Ermler, U.

(1999) Structure 7: 1257


  • PubMed Abstract: 
  • The reduction of carbon dioxide to methane in methanogenic archaea involves the tetrahydrofolate analogue tetrahydromethanopterin (H(4)MPT) as a C(1) unit carrier. In the third step of this reaction sequence, N(5)-formyl-H(4)MPT is converted to methe ...

    The reduction of carbon dioxide to methane in methanogenic archaea involves the tetrahydrofolate analogue tetrahydromethanopterin (H(4)MPT) as a C(1) unit carrier. In the third step of this reaction sequence, N(5)-formyl-H(4)MPT is converted to methenyl-H(4)MPT(+) by the enzyme methenyltetrahydromethanopterin cyclohydrolase. The cyclohydrolase from the hyperthermophilic archaeon Methanopyrus kandleri (Mch) is extremely thermostable and adapted to a high intracellular concentration of lyotropic salts.


    Organizational Affiliation

    Max-Planck-Institut für terrestrische Mikrobiologie, Karl-von-Frisch-Strasse, 35043, Marburg, Max-Planck-Institut für Biophysik, Heinrich-Hoffmann-Strasse 7, 60528, Frankurt, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
METHENYLTETRAHYDROMETHANOPTERIN CYCLOHYDROLASE
A
316Methanopyrus kandleri (strain AV19 / DSM 6324 / JCM 9639 / NBRC 100938)Mutation(s): 0 
Gene Names: mch
EC: 3.5.4.27
Find proteins for P94954 (Methanopyrus kandleri (strain AV19 / DSM 6324 / JCM 9639 / NBRC 100938))
Go to UniProtKB:  P94954
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.198 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 125.900α = 90.00
b = 125.900β = 90.00
c = 172.400γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSphasing
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1999-09-01 
  • Released Date: 1999-09-20 
  • Deposition Author(s): Grabarse, W.

Revision History 

  • Version 1.0: 1999-09-20
    Type: Initial release
  • Version 1.1: 2012-11-14
    Type: Database references, Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance
  • Version 1.2: 2017-07-05
    Type: Data collection