6ETH

The Structure of the Mo-insertase domain Cnx1E from Arabidopsis thaliana in complex with AMP and tungstate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 

wwPDB Validation 3D Report Full Report



Literature

The functional principle of eukaryotic molybdenum insertases.

Krausze, J.Hercher, T.W.Zwerschke, D.Kirk, M.L.Blankenfeldt, W.Mendel, R.R.Kruse, T.

(2018) Biochem J 475: 1739-1753

  • DOI: 10.1042/BCJ20170935
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The molybdenum cofactor (Moco) is a redox-active prosthetic group found in the active site of Moco-dependent enzymes, which are vitally important for life. Moco biosynthesis involves several enzymes that catalyze the subsequent conversion of GTP into ...

    The molybdenum cofactor (Moco) is a redox-active prosthetic group found in the active site of Moco-dependent enzymes, which are vitally important for life. Moco biosynthesis involves several enzymes that catalyze the subsequent conversion of GTP into cyclic pyranopterin monophosphate (cPMP), molybdopterin (MPT), adenylated MPT (MPT-AMP), and finally Moco. While the underlying principles of cPMP, MPT, and MPT-AMP formation are well understood, the molybdenum insertase (Mo-insertase)-catalyzed final Moco maturation step is not. In the present study, we analyzed high-resolution X-ray datasets of the plant Mo-insertase Cnx1E that revealed two molybdate-binding sites within the active site, hence improving the current view on Cnx1E functionality. The presence of molybdate anions in either of these sites is tied to a distinctive backbone conformation, which we suggest to be essential for Mo-insertase molybdate selectivity and insertion efficiency.


    Organizational Affiliation

    Department of Plant Biology, Braunschweig University of Technology, 38106 Braunschweig, Germany t.kruse@tu-bs.de.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Molybdopterin biosynthesis protein CNX1
A
471Arabidopsis thalianaMutation(s): 0 
Gene Names: CNX1At5g20990F22D1.6T10F18.20
EC: 2.10.1.1 (PDB Primary Data), 2.7.7.75 (PDB Primary Data)
Find proteins for Q39054 (Arabidopsis thaliana)
Go to UniProtKB:  Q39054
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AMP
Query on AMP

Download CCD File 
A
ADENOSINE MONOPHOSPHATE
C10 H14 N5 O7 P
UDMBCSSLTHHNCD-KQYNXXCUSA-N
 Ligand Interaction
WO4
Query on WO4

Download CCD File 
A
TUNGSTATE(VI)ION
O4 W
PBYZMCDFOULPGH-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
ACE
Query on ACE

Download CCD File 
A
ACETYL GROUP
C2 H4 O
IKHGUXGNUITLKF-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.5α = 90
b = 123.47β = 90
c = 133.6γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
MxCuBEdata collection
XDSdata reduction
STARANISOdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2017-10-26 
  • Released Date: 2018-07-18 
  • Deposition Author(s): Krausze, J.

Revision History 

  • Version 1.0: 2018-07-18
    Type: Initial release