1AG6

PLASTOCYANIN FROM SPINACH


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.191 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of spinach plastocyanin at 1.7 A resolution.

Xue, Y.Okvist, M.Hansson, O.Young, S.

(1998) Protein Sci 7: 2099-2105

  • DOI: 10.1002/pro.5560071006
  • Primary Citation of Related Structures:  
    1AG6

  • PubMed Abstract: 
  • The crystal structure of plastocyanin from spinach has been determined using molecular replacement, with the structure of plastocyanin from poplar as a search model. Successful crystallization was facilitated by site-directed mutagenesis in which res ...

    The crystal structure of plastocyanin from spinach has been determined using molecular replacement, with the structure of plastocyanin from poplar as a search model. Successful crystallization was facilitated by site-directed mutagenesis in which residue Gly8 was substituted with Asp. The region around residue 8 was believed to be too mobile for the wild-type protein to form crystals despite extensive screening. The current structure represents the oxidized plastocyanin, copper (II), at low pH (approximately 4.4). In contrast to the similarity in the core region as compared to its poplar counterpart, the structure shows some significant differences in loop regions. The most notable is the large shift of the 59-61 loop where the largest shift is 3.0 A for the C(alpha) atom of Glu59. This results in different patterns of electrostatic potential around the acidic patches for the two proteins.


    Organizational Affiliation

    Department of Chemistry, Biochemistry and Biophysics, Göteborg University, Sweden. Yafeng.Xue@hassle.se.astra.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PLASTOCYANINA99Spinacia oleraceaMutation(s): 1 
Gene Names: PETE
Find proteins for P00289 (Spinacia oleracea)
Explore P00289 
Go to UniProtKB:  P00289
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CU
Query on CU

Download CCD File 
A
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.191 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.582α = 90
b = 75.582β = 90
c = 32.707γ = 120
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-10-21
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance