1JB9

Crystal Structure of The Ferredoxin:NADP+ Reductase From Maize Root AT 1.7 Angstroms


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Biochemical and crystallographic characterization of ferredoxin-NADP(+) reductase from nonphotosynthetic tissues.

Aliverti, A.Faber, R.Finnerty, C.M.Ferioli, C.Pandini, V.Negri, A.Karplus, P.A.Zanetti, G.

(2001) Biochemistry 40: 14501-14508

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Distinct forms of ferredoxin-NADP(+) reductase are expressed in photosynthetic and nonphotosynthetic plant tissues. Both enzymes catalyze electron transfer between NADP(H) and ferredoxin; whereas in leaves the enzyme transfers reducing equivalents fr ...

    Distinct forms of ferredoxin-NADP(+) reductase are expressed in photosynthetic and nonphotosynthetic plant tissues. Both enzymes catalyze electron transfer between NADP(H) and ferredoxin; whereas in leaves the enzyme transfers reducing equivalents from photoreduced ferredoxin to NADP(+) in photosynthesis, in roots it has the opposite physiological role, reducing ferredoxin at the expense of NADPH mainly for use in nitrate assimilation. Here, structural and kinetic properties of a nonphotosynthetic isoform were analyzed to define characteristics that may be related to tissue-specific function. Compared with spinach leaf ferredoxin-NADP(+) reductase, the recombinant corn root isoform showed a slightly altered absorption spectrum, a higher pI, a >30-fold higher affinity for NADP(+), greater susceptibility to limited proteolysis, and an approximately 20 mV more positive redox potential. The 1.7 A resolution crystal structure is very similar to the structures of ferredoxin-NADP(+) reductases from photosynthetic tissues. Four distinct structural features of this root ferredoxin-NADP(+) reductases are an alternate conformation of the bound FAD molecule, an alternate path for the amino-terminal extension, a disulfide bond in the FAD-binding domain, and changes in the surface that binds ferredoxin.


    Related Citations: 
    • Structural and Functional Properties of Corn Root Ferredoxin:NADP+ Reductase
      Aliverti, A.,Ferioli, C.,Spinola, M.,Raimondi, D.,Zanetti, G.,Finnerty, C.,Faber, R.,Karplus, P.A.
      (1999) FLAVINS AND FLAVOPROTEINS --: 265


    Organizational Affiliation

    Dipartimento di Fisiologia e Biochimica Generali, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ferredoxin-NADP reductase
A
316Zea maysMutation(s): 0 
Find proteins for Q41736 (Zea mays)
Go to UniProtKB:  Q41736
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
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: 1.7 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.164 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 59.670α = 90.00
b = 59.670β = 90.00
c = 189.100γ = 120.00
Software Package:
Software NamePurpose
TNTrefinement
SCALEPACKdata scaling
MRXphasing
MRXmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-07-04
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2012-07-11
    Type: Database references
  • Version 1.4: 2014-03-26
    Type: Database references
  • Version 1.5: 2017-10-04
    Type: Refinement description