1BQE

FERREDOXIN:NADP+ REDUCTASE MUTANT WITH THR 155 REPLACED BY GLY (T155G)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.160 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Probing the determinants of coenzyme specificity in ferredoxin-NADP+ reductase by site-directed mutagenesis.

Medina, M.Luquita, A.Tejero, J.Hermoso, J.Mayoral, T.Sanz-Aparicio, J.Grever, K.Gomez-Moreno, C.

(2001) J.Biol.Chem. 276: 11902-11912

  • DOI: 10.1074/jbc.M009287200
  • Also Cited By: 1H85

  • PubMed Abstract: 
  • On the basis of sequence and three-dimensional structure comparison between Anabaena PCC7119 ferredoxin-NADP(+) reductase (FNR) and other reductases from its structurally related family that bind either NADP(+)/H or NAD(+)/H, a set of amino acid resi ...

    On the basis of sequence and three-dimensional structure comparison between Anabaena PCC7119 ferredoxin-NADP(+) reductase (FNR) and other reductases from its structurally related family that bind either NADP(+)/H or NAD(+)/H, a set of amino acid residues that might determine the FNR coenzyme specificity can be assigned. These residues include Thr-155, Ser-223, Arg-224, Arg-233 and Tyr-235. Systematic replacement of these amino acids was done to identify which of them are the main determinants of coenzyme specificity. Our data indicate that all of the residues interacting with the 2'-phosphate of NADP(+)/H in Anabaena FNR are not involved to the same extent in determining coenzyme specificity and affinity. Thus, it is found that Ser-223 and Tyr-235 are important for determining NADP(+)/H specificity and orientation with respect to the protein, whereas Arg-224 and Arg-233 provide only secondary interactions in Anabaena FNR. The analysis of the T155G FNR form also indicates that the determinants of coenzyme specificity are not only situated in the 2'-phosphate NADP(+)/H interacting region but that other regions of the protein must be involved. These regions, although not interacting directly with the coenzyme, must produce specific structural arrangements of the backbone chain that determine coenzyme specificity. The loop formed by residues 261-268 in Anabaena FNR must be one of these regions.


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


    Organizational Affiliation

    Departamento de Bioquimica y Biologia Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FERREDOXIN--NADP REDUCTASE
A
295Nostoc sp. (strain ATCC 29151 / PCC 7119)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: 2.45 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.160 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 88.130α = 90.00
b = 88.130β = 90.00
c = 97.250γ = 120.00
Software Package:
Software NamePurpose
CCP4data scaling
X-PLORrefinement
MOSFLMdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-27
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance