4V81

The crystal structure of yeast CCT reveals intrinsic asymmetry of eukaryotic cytosolic chaperonins


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • R-Value Free: 0.344 
  • R-Value Work: 0.307 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of yeast CCT reveals intrinsic asymmetry of eukaryotic cytosolic chaperonins.

Dekker, C.Roe, S.M.McCormack, E.A.Beuron, F.Pearl, L.H.Willison, K.R.

(2011) Embo J. 30: 3078-3090

  • DOI: 10.1038/emboj.2011.208
  • Primary Citation of Related Structures:  
  • Also Cited By: 4V8R, 4V94, 4D8R, 4D8Q, 4APK, 4AOL

  • PubMed Abstract: 
  • The cytosolic chaperonin CCT is a 1-MDa protein-folding machine essential for eukaryotic life. The CCT interactome shows involvement in folding and assembly of a small range of proteins linked to essential cellular processes such as cytoskeleton asse ...

    The cytosolic chaperonin CCT is a 1-MDa protein-folding machine essential for eukaryotic life. The CCT interactome shows involvement in folding and assembly of a small range of proteins linked to essential cellular processes such as cytoskeleton assembly and cell-cycle regulation. CCT has a classic chaperonin architecture, with two heterogeneous 8-membered rings stacked back-to-back, enclosing a folding cavity. However, the mechanism by which CCT assists folding is distinct from other chaperonins, with no hydrophobic wall lining a potential Anfinsen cage, and a sequential rather than concerted ATP hydrolysis mechanism. We have solved the crystal structure of yeast CCT in complex with actin at 3.8 Å resolution, revealing the subunit organisation and the location of discrete patches of co-evolving 'signature residues' that mediate specific interactions between CCT and its substrates. The intrinsic asymmetry is revealed by the structural individuality of the CCT subunits, which display unique configurations, substrate binding properties, ATP-binding heterogeneity and subunit-subunit interactions. The location of the evolutionarily conserved N-terminus of Cct5 on the outside of the barrel, confirmed by mutational studies, is unique to eukaryotic cytosolic chaperonins.


    Organizational Affiliation

    Section of Cell and Molecular Biology, Chester Beatty Laboratories, Institute of Cancer Research, London, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
T-complex protein 1 subunit alpha
A, I, a, i
559Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: TCP1 (CCT1)
Find proteins for P12612 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: TCP1
Go to UniProtKB:  P12612
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
T-complex protein 1 subunit beta
B, J, b, j
527Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CCT2 (BIN3, TCP2)
Find proteins for P39076 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: CCT2
Go to UniProtKB:  P39076
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
T-complex protein 1 subunit gamma
C, K, c, k
590Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 1 
Gene Names: CCT3 (BIN2, TCP3)
Find proteins for P39077 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: CCT3
Go to UniProtKB:  P39077
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
T-complex protein 1 subunit delta
D, L, d, l
528Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CCT4 (ANC2, TCP4)
Find proteins for P39078 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: CCT4
Go to UniProtKB:  P39078
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
T-complex protein 1 subunit epsilon
E, M, e, m
562Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CCT5 (TCP5)
Find proteins for P40413 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: CCT5
Go to UniProtKB:  P40413
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
T-complex protein 1 subunit zeta
F, N, f, n
546Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CCT6 (TCP20, TCP6)
Find proteins for P39079 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P39079
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
T-complex protein 1 subunit eta
G, O, g, o
550Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CCT7
Find proteins for P42943 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: CCT7
Go to UniProtKB:  P42943
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
T-complex protein 1 subunit theta
H, P, h, p
568Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CCT8
Find proteins for P47079 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: CCT8
Go to UniProtKB:  P47079
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
c, d, I, i, j, K, o, O
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, a, b, B, C, D, E, e, F, f, g, G, h, H, J, k, L, l, M, m, n, N, P, p
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
BEF
Query on BEF

Download SDF File 
Download CCD File 
a, A, B, b, C, D, e, E, F, f, G, g, h, H, J, k, L, l, M, m, N, n, P, p
BERYLLIUM TRIFLUORIDE ION
Be F3
OGIAHMCCNXDTIE-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • R-Value Free: 0.344 
  • R-Value Work: 0.307 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 159.100α = 85.23
b = 162.540β = 81.15
c = 268.100γ = 61.17
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-07-09
    Type: Initial release
  • Version 1.1: 2014-12-10
    Type: Other
  • Version 1.2: 2017-11-22
    Type: Refinement description