2VBS

Riboflavin kinase Mj0056 from Methanocaldococcus jannaschii in complex with PO4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.232 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

A Ctp-Dependent Archaeal Riboflavin Kinase Forms a Bridge in the Evolution of Cradle-Loop Barrels.

Ammelburg, M.Hartmann, M.D.Djuranovic, S.Alva, V.Koretke, K.K.Martin, J.Sauer, G.Truffault, V.Zeth, K.Lupas, A.N.Coles, M.

(2007) Structure 15: 1577

  • DOI: 10.1016/j.str.2007.09.027
  • Primary Citation of Related Structures:  
    2P3M, 2VBS, 2VBT, 2VBU, 2VBV

  • PubMed Abstract: 
  • Proteins of the cradle-loop barrel metafold are formed by duplication of a conserved betaalphabeta-element, suggesting a common evolutionary origin from an ancestral group of nucleic acid-binding proteins. The basal fold within this metafold, the RIFT barrel, is also found in a wide range of enzymes, whose homologous relationship with the nucleic acid-binding group is unclear ...

    Proteins of the cradle-loop barrel metafold are formed by duplication of a conserved betaalphabeta-element, suggesting a common evolutionary origin from an ancestral group of nucleic acid-binding proteins. The basal fold within this metafold, the RIFT barrel, is also found in a wide range of enzymes, whose homologous relationship with the nucleic acid-binding group is unclear. We have characterized a protein family that is intermediate in sequence and structure between the basal group of cradle-loop barrels and one family of RIFT-barrel enzymes, the riboflavin kinases. We report the structure, substrate-binding mode, and catalytic activity for one of these proteins, Methanocaldococcus jannaschii Mj0056, which is an archaeal riboflavin kinase. Mj0056 is unusual in utilizing CTP rather than ATP as the donor nucleotide, and sequence conservation in the relevant residues suggests that this is a general feature of archaeal riboflavin kinases.


    Organizational Affiliation

    Department of Protein Evolution, Max-Planck-Institute for Developmental Biology, 72076 Tübingen, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RIBOFLAVIN KINASEA136Methanocaldococcus jannaschiiMutation(s): 0 
EC: 2.7.1.161
UniProt
Find proteins for Q60365 (Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440))
Explore Q60365 
Go to UniProtKB:  Q60365
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ60365
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download Ideal Coordinates CCD File 
B [auth A]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.232 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.7α = 90
b = 77.7β = 90
c = 107.07γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-11-20
    Type: Initial release
  • Version 1.1: 2012-06-06
    Changes: Data collection, Database references, Derived calculations, Non-polymer description, Other, Version format compliance