1IR2

Crystal Structure of Activated Ribulose-1,5-bisphosphate Carboxylase/oxygenase (Rubisco) from Green alga, Chlamydomonas reinhardtii Complexed with 2-Carboxyarabinitol-1,5-bisphosphate (2-CABP)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.152 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of activated ribulose-1,5-bisphosphate carboxylase/oxygenase from green alga Chlamydomonas reinhardtii complexed with 2-carboxyarabinitol-1,5-bisphosphate.

Mizohata, E.Matsumura, H.Okano, Y.Kumei, M.Takuma, H.Onodera, J.Kato, K.Shibata, N.Inoue, T.Yokota, A.Kai, Y.

(2002) J Mol Biol 316: 679-691

  • DOI: 10.1006/jmbi.2001.5381
  • Primary Citation of Related Structures:  
    1IR1, 1IR2

  • PubMed Abstract: 
  • Ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) catalyzes the initial steps of photosynthetic carbon reduction and photorespiratory carbon oxidation cycles by combining CO(2) and O(2), respectively, with ribulose-1,5-bisphosphate. Many phot ...

    Ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) catalyzes the initial steps of photosynthetic carbon reduction and photorespiratory carbon oxidation cycles by combining CO(2) and O(2), respectively, with ribulose-1,5-bisphosphate. Many photosynthetic organisms have form I rubiscos comprised of eight large (L) and eight small (S) subunits. The crystal structure of the complex of activated rubisco from the green alga Chlamydomonas reinhardtii and the reaction intermediate analogue 2-carboxyarabinitol-1,5-bisphosphate (2-CABP) has been solved at 1.84 A resolution (R(cryst) of 15.2 % and R(free) of 18.1 %). The subunit arrangement of Chlamydomonas rubisco is the same as those of the previously solved form I rubiscos. Especially, the present structure is very similar to the activated spinach structure complexed with 2-CABP in the L-subunit folding and active-site conformation, but differs in S-subunit folding. The central insertion of the Chlamydomonas S-subunit forms the longer betaA-betaB loop that protrudes deeper into the solvent channel of rubisco than higher plant, cyanobacterial, and red algal (red-like) betaA-betaB loops. The C-terminal extension of the Chlamydomonas S-subunit does not protrude into the solvent channel, unlike that of the red algal S-subunit, but lies on the protein surface anchored by interactions with the N-terminal region of the S-subunit. Further, the present high-resolution structure has revealed novel post-translational modifications. Residue 1 of the S-subunit is N(alpha)-methylmethionine, residues 104 and 151 of the L-subunit are 4-hydroxyproline, and residues 256 and 369 of the L-subunit are S(gamma)-methylcysteine. Furthermore, the unusual electron density of residue 471 of the L-subunit, which has been deduced to be threonine from the genomic DNA sequence, suggests that the residue is isoleucine produced by RNA editing or O(gamma)-methylthreonine.


    Organizational Affiliation

    Department of Materials Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Large subunit of RubiscoABCDEFGHSTUVWXYZ475Chlamydomonas reinhardtiiMutation(s): 5 
Gene Names: rbcL
EC: 4.1.1.39
Find proteins for P00877 (Chlamydomonas reinhardtii)
Explore P00877 
Go to UniProtKB:  P00877
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Small subunit of Rubisco12345678IJKLMNOP140Chlamydomonas reinhardtiiMutation(s): 1 
Gene Names: RBCS-2
EC: 4.1.1.39
Find proteins for P08475 (Chlamydomonas reinhardtii)
Explore P08475 
Go to UniProtKB:  P08475
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CAP
Query on CAP

Download CCD File 
A, B, C, D, E, F, G, H, S, T, U, V, W, X, Y, Z
2-CARBOXYARABINITOL-1,5-DIPHOSPHATE
C6 H14 O13 P2
ITHCSGCUQDMYAI-ZMIZWQJLSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B, C, D, E, F, G, H, S, T, U, V, W, X, Y, Z
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B, C, D, E, F, G, H, S, T, U, V, W, X, Y, Z
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  4 Unique
IDChainsTypeFormula2D DiagramParent
HYP
Query on HYP
A,B,C,D,E,F,G,H,S,T,U,V,W,X,Y,ZL-PEPTIDE LINKINGC5 H9 N O3PRO
KCX
Query on KCX
A,B,C,D,E,F,G,H,S,T,U,V,W,X,Y,ZL-PEPTIDE LINKINGC7 H14 N2 O4LYS
SMC
Query on SMC
A,B,C,D,E,F,G,H,S,T,U,V,W,X,Y,ZL-PEPTIDE LINKINGC4 H9 N O2 SCYS
MME
Query on MME
1,2,3,4,5,6,7,8,I,J,K,L,M,N,O,PL-PEPTIDE LINKINGC6 H13 N O2 SMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.152 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 129.17α = 90
b = 174.75β = 97.75
c = 222.27γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-03-20
    Type: Initial release
  • Version 1.1: 2008-01-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance