Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 30.14 kDa 
• Atom Count: 1,826 
• Modelled Residue Count: 209 
• Deposited Residue Count: 252 
• Unique protein chains: 1

 4GR6

Crystal structure of AtRbcX2 from Arabidopsis thaliana

• PDB DOI:  https://doi.org/10.2210/pdb4GR6/pdb

• Classification: CHAPERONE
• Organism(s): Arabidopsis thaliana
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2012-08-24 Released: 2013-01-30 
• Deposition Author(s): Grudnik, P., Golik, P., Kolesinski, P., Dubin, G., Szczepaniak, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.196 
• R-Value Work: 0.174 
• R-Value Observed: 0.175 

Literature

Insights into eukaryotic Rubisco assembly - Crystal structures of RbcX chaperones from Arabidopsis thaliana.

Kolesinski, P., Golik, P., Grudnik, P., Piechota, J., Markiewicz, M., Tarnawski, M., Dubin, G., Szczepaniak, A.

(2013) Biochim Biophys Acta 1830: 2899-2906

• PubMed: 23295968 
• DOI: https://doi.org/10.1016/j.bbagen.2012.12.025
• Primary Citation of Related Structures:  
  4GR2, 4GR6


• PubMed Abstract: 
  

Chloroplasts were formed by uptake of cyanobacteria into eukaryotic cells ca. 1.6 billion years ago. During evolution most of the cyanobacterial genes were transferred from the chloroplast to the nuclear genome. The rbcX gene, encoding an assembly chaperone required for Rubisco biosynthesis in cyanobacteria, was duplicated. Here we demonstrate that homologous eukaryotic chaperones (AtRbcX1 and AtRbcX2) demonstrate different affinities for the C-terminus of Rubisco large subunit and determine their crystal structures.

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Organizational Affiliation: 

Laboratory of Biophysics, Faculty of Biotechnology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AtRbcX2	A, B	126	Arabidopsis thaliana	Mutation(s): 1  Gene Names: At5g19855, RBCX2, F28I16, T29J13
UniProt
Find proteins for Q8L9X2 (Arabidopsis thaliana) Explore Q8L9X2  Go to UniProtKB:  Q8L9X2

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	C [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.196 
• R-Value Work: 0.174 
• R-Value Observed: 0.175 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 91.77	α = 90
b = 63.3	β = 96.57
c = 57.32	γ = 90

Software Package:

Software Name	Purpose
CrystalClear	data collection
PHENIX	model building
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-01-30 
Deposition Author(s): Grudnik, P., Golik, P., Kolesinski, P., Dubin, G., Szczepaniak, A.

Revision History  

• Version 1.0: 2013-01-30
  Type: Initial release
  
• Version 1.1: 2013-03-06
  Changes: Database references