1G1M

ALL-FERROUS NITROGENASE IRON PROTEIN FROM AZOTOBACTER VINELANDII


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of the all-ferrous [4Fe-4S]0 form of the nitrogenase iron protein from Azotobacter vinelandii.

Strop, P.Takahara, P.M.Chiu, H.Angove, H.C.Burgess, B.K.Rees, D.C.

(2001) Biochemistry 40: 651-656

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The structure of the nitrogenase iron protein from Azotobacter vinelandii in the all-ferrous [4Fe-4S](0) form has been determined to 2.25 A resolution by using the multiwavelength anomalous diffraction (MAD) phasing technique. The structure demonstra ...

    The structure of the nitrogenase iron protein from Azotobacter vinelandii in the all-ferrous [4Fe-4S](0) form has been determined to 2.25 A resolution by using the multiwavelength anomalous diffraction (MAD) phasing technique. The structure demonstrates that major conformational changes are not necessary either in the iron protein or in the cluster to accommodate cluster reduction to the [4Fe-4S](0) oxidation state. A survey of [4Fe-4S] clusters coordinated by four cysteine ligands in proteins of known structure reveals that the [4Fe-4S] cluster of the iron protein has the largest accessible surface area, suggesting that solvent exposure may be relevant to the ability of the iron protein to exist in three oxidation states.


    Organizational Affiliation

    Biochemistry Option, California Institute of Technology, Mail Code 147-75, Pasadena, California 91125, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NITROGENASE IRON PROTEIN
A, B
289Azotobacter vinelandiiMutation(s): 0 
Gene Names: nifH1
EC: 1.18.6.1
Find proteins for P00459 (Azotobacter vinelandii)
Go to UniProtKB:  P00459
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SF4
Query on SF4

Download SDF File 
Download CCD File 
A
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-VKOJMFJBAC
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.238 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 57.000α = 90.00
b = 93.300β = 98.90
c = 62.800γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
MAR345data collection
SHARPphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-01-31
    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: 2017-10-04
    Type: Advisory, Refinement description