1E0R

Beta-apical domain of thermosome


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.318 
  • R-Value Work: 0.261 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Beta-Apical Domain from Thermosome Reveals Structural Plasticity in Protrusion Region

Bosch, G.Baumeister, W.Essen, L.-O.

(2000) J.Mol.Biol. 301: 19

  • DOI: 10.1006/jmbi.2000.3955

  • PubMed Abstract: 
  • The crystal structure of the beta-apical domain of the thermosome, an archaeal group II chaperonin from Thermoplasma acidophilum, has been determined at 2.8 A resolution. The structure shows an invariant globular core from which a 25 A long protrusio ...

    The crystal structure of the beta-apical domain of the thermosome, an archaeal group II chaperonin from Thermoplasma acidophilum, has been determined at 2.8 A resolution. The structure shows an invariant globular core from which a 25 A long protrusion emanates, composed of an elongated alpha-helix (H10) and a long extended stretch consisting of residues GluB245-ThrB253. A comparison with previous apical domain structures reveals a large segmental displacement of the protruding part of helix H10 via the hinge GluB276-ValB278. The region comprising residues GluB245-ThrB253 adopts an extended beta-like conformation rather than the alpha-helix seen in the alpha-apical domain. Consequently, it appears that the protrusions of the apical domains from group II chaperonins might assume a variety of context-dependent conformations during an open, substrate-accepting state of the chaperonin. Sequence variations in the protrusion regions that are found in the eukaryotic TRiC/CCT subunits may provide different structural propensities and hence serve different roles in substrate recognition.


    Related Citations: 
    • Crystal Structure of the Thermosome, the Archaeal Chaperonin and Homolog of Cct
      Ditzel, L.,Lowe, J.,Stock, D.,Stetter, K.O.,Huber, H.,Huber, R.,Steinbacher, S.
      (1998) Cell 93: 125
    • Structure of the Substrate-Binding Domain of the Thermosome, an Archaeal Group II Chaperonin
      Klumpp, M.,Baumeister, W.,Essen, L.-O.
      (1997) Cell 91: 263


    Organizational Affiliation

    Max-Planck-Institute for Biochemistry, Am Klopferspitz 18a, Martinsried bei M√ľnchen, D-82152, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
THERMOSOME
B
159Thermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165)Gene Names: thsB
Find proteins for P48425 (Thermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165))
Go to UniProtKB:  P48425
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.318 
  • R-Value Work: 0.261 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 57.320α = 90.00
b = 57.320β = 90.00
c = 106.140γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-08-19
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance