1FXK

CRYSTAL STRUCTURE OF ARCHAEAL PREFOLDIN (GIMC).

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structure of the molecular chaperone prefoldin: unique interaction of multiple coiled coil tentacles with unfolded proteins.

Siegert, R., Leroux, M.R., Scheufler, C., Hartl, F.U., Moarefi, I.

(2000) Cell 103: 621-632

  • DOI: 10.1016/s0092-8674(00)00165-3
  • Primary Citation of Related Structures:  
    1FXK

  • PubMed Abstract: 

    • Prefoldin (GimC) is a hexameric molecular chaperone complex built from two related classes of subunits and present in all eukaryotes and archaea. Prefoldin interacts with nascent polypeptide chains and, in vitro, can functionally substitute for the Hsp70 chaperone system in stabilizing non-native proteins for subsequent folding in the central cavity of a chaperonin ...

    Prefoldin (GimC) is a hexameric molecular chaperone complex built from two related classes of subunits and present in all eukaryotes and archaea. Prefoldin interacts with nascent polypeptide chains and, in vitro, can functionally substitute for the Hsp70 chaperone system in stabilizing non-native proteins for subsequent folding in the central cavity of a chaperonin. Here, we present the crystal structure and characterization of the prefoldin hexamer from the archaeum Methanobacterium thermoautotrophicum. Prefoldin has the appearance of a jellyfish: its body consists of a double beta barrel assembly with six long tentacle-like coiled coils protruding from it. The distal regions of the coiled coils expose hydrophobic patches and are required for multivalent binding of nonnative proteins.

    Organizational Affiliation: 

    Max-Planck Institut für Biochemie, Am Klopferspitz 18a, D82152 Martinsried, Germany.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PREFOLDINA107Methanothermobacter thermautotrophicusMutation(s): 0 
UniProt
Find proteins for O26774 (Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H))
Explore O26774 
Go to UniProtKB:  O26774
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO26774
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PREFOLDINB109Methanothermobacter thermautotrophicusMutation(s): 0 
UniProt
Find proteins for O26774 (Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H))
Explore O26774 
Go to UniProtKB:  O26774
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO26774
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (PREFOLDIN)C133Methanothermobacter thermautotrophicusMutation(s): 0 
UniProt
Find proteins for O27646 (Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H))
Explore O27646 
Go to UniProtKB:  O27646
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO27646
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE		A L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.85α = 90
b = 90.69β = 90
c = 78.86γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-12-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance