1H42

FERREDOXIN:NADP+ REDUCTASE MUTANT WITH THR 155 REPLACED BY GLY, ALA 160 REPLACED BY THR AND LEU 263 REPLACED BY PRO (T155G-A160T-L263P)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Involvement of the Pyrophosphate and the 2'-Phosphate Binding Regions of Ferredoxin-Nadp+ Reductase in Coenzyme Specificity

Tejero, J.Martinez-Julvez, M.Mayoral, T.Luquita, A.Sanz-Aparicio, J.Hermoso, J.A.Hurley, J.Tollin, G.Gomez-Moreno, C.Medina, M.

(2003) J.Biol.Chem. 278: 49203

  • DOI: 10.1074/jbc.M307934200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Previous studies indicated that the determinants of coenzyme specificity in ferredoxin-NADP+ reductase (FNR) from Anabaena are situated in the 2'-phosphate (2'-P) NADP+ binding region, and also suggested that other regions must undergo structural rea ...

    Previous studies indicated that the determinants of coenzyme specificity in ferredoxin-NADP+ reductase (FNR) from Anabaena are situated in the 2'-phosphate (2'-P) NADP+ binding region, and also suggested that other regions must undergo structural rearrangements of the protein backbone during coenzyme binding. Among the residues involved in such specificity could be those located in regions where interaction with the pyrophosphate group of the coenzyme takes place, namely loops 155-160 and 261-268 in Anabaena FNR. In order to learn more about the coenzyme specificity determinants, and to better define the structural basis of coenzyme binding, mutations in the pyrophosphate and 2'-P binding regions of FNR have been introduced. Modification of the pyrophosphate binding region, involving residues Thr-155, Ala-160, and Leu-263, indicates that this region is involved in determining coenzyme specificity and that selected alterations of these positions produce FNR enzymes that are able to bind NAD+. Thus, our results suggest that slightly different structural rearrangements of the backbone chain in the pyrophosphate binding region might determine FNR specificity for the coenzyme. Combined mutations at the 2'-P binding region, involving residues Ser-223, Arg-224, Arg-233, and Tyr-235, in combination with the residues mentioned above in the pyrophosphate binding region have also been carried out in an attempt to increase the FNR affinity for NAD+/H. However, in most cases the analyzed mutants lost the ability for NADP+/H binding and electron transfer, and no major improvements were observed with regard to the efficiency of the reactions with NAD+/H. Therefore, our results confirm that determinants for coenzyme specificity in FNR are also situated in the pyrophosphate binding region and not only in the 2'-P binding region. Such observations also suggest that other regions of the protein, yet to be identified, might also be involved in this process.


    Related Citations: 
    • X-Ray Structure of the Ferredoxin:Nadp+ Reductase from the Cyanobacterium Anabanena Pcc 7119 at 1.8A Resolution, and Crystallographic Studies of Nadp Binding at 2.25A Resolution
      Serre, L.,Vellieux, F.M.D.,Medina, M.,Gomez-Moreno, C.,Fontecilla, J.C.,Frey, M.
      (1996) J.Mol.Biol. 263: 20


    Organizational Affiliation

    Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Madrid, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FERREDOXIN--NADP+ REDUCTASE
A
304Nostoc sp. (strain ATCC 29151 / PCC 7119)Mutation(s): 3 
Gene Names: petH
EC: 1.18.1.2
Find proteins for P21890 (Nostoc sp. (strain ATCC 29151 / PCC 7119))
Go to UniProtKB:  P21890
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
FAD
Query on FAD

Download SDF File 
Download CCD File 
A
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.200 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 85.810α = 90.00
b = 85.810β = 90.00
c = 96.130γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
SCALAdata scaling
MOSFLMdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-09-25
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-07-05
    Type: Data collection