2WVW

Cryo-EM structure of the RbcL-RbcX complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Coupled Chaperone Action in Folding and Assembly of Hexadecameric Rubisco

Liu, C.Young, A.L.Starling-Windhof, A.Bracher, A.Saschenbrecker, S.Rao, B.V.Rao, K.V.Berninghausen, O.Mielke, T.Hartl, F.U.Beckmann, R.Hayer-Hartl, M.

(2010) Nature 463: 197

  • DOI: 10.1038/nature08651
  • Primary Citation of Related Structures:  3HYB
  • Also Cited By: 3RG6

  • PubMed Abstract: 
  • Form I Rubisco (ribulose 1,5-bisphosphate carboxylase/oxygenase), a complex of eight large (RbcL) and eight small (RbcS) subunits, catalyses the fixation of atmospheric CO(2) in photosynthesis. The limited catalytic efficiency of Rubisco has sparked ...

    Form I Rubisco (ribulose 1,5-bisphosphate carboxylase/oxygenase), a complex of eight large (RbcL) and eight small (RbcS) subunits, catalyses the fixation of atmospheric CO(2) in photosynthesis. The limited catalytic efficiency of Rubisco has sparked extensive efforts to re-engineer the enzyme with the goal of enhancing agricultural productivity. To facilitate such efforts we analysed the formation of cyanobacterial form I Rubisco by in vitro reconstitution and cryo-electron microscopy. We show that RbcL subunit folding by the GroEL/GroES chaperonin is tightly coupled with assembly mediated by the chaperone RbcX(2). RbcL monomers remain partially unstable and retain high affinity for GroEL until captured by RbcX(2). As revealed by the structure of a RbcL(8)-(RbcX(2))(8) assembly intermediate, RbcX(2) acts as a molecular staple in stabilizing the RbcL subunits as dimers and facilitates RbcL(8) core assembly. Finally, addition of RbcS results in RbcX(2) release and holoenzyme formation. Specific assembly chaperones may be required more generally in the formation of complex oligomeric structures when folding is closely coupled to assembly.


    Organizational Affiliation

    Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIBULOSE BISPHOSPHATE CARBOXYLASE LARGE CHAIN
A, B, C, D, E, F, G, H
472Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1)Gene Names: cbbL (rbcA, rbcL)
EC: 4.1.1.39
Find proteins for P00880 (Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1))
Go to UniProtKB:  P00880
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RBCX PROTEIN
I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X
155Anabaena sp.Gene Names: rbcX
Find proteins for Q44212 (Anabaena sp.)
Go to UniProtKB:  Q44212
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-01-19
    Type: Initial release
  • Version 1.1: 2011-07-27
    Type: Other, Version format compliance
  • Version 1.2: 2012-06-06
    Type: Other
  • Version 1.3: 2017-08-30
    Type: Experimental preparation