1GO1

NMR Structure of Ribosomal Protein L30e from Thermococcus celer.


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 
  • Selection Criteria: MINIMIZED AVERAGE STRUCTURE OF BEST 10 STRUCTURES WITH THE LOWEST ENERGY 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution Structure and Thermal Stability of Ribosomal Protein L30E from Hyperthermophilic Archaeon Thermococcus Celer

Wong, K.-B.Lee, C.-F.Chan, S.-H.Leung, T.-Y.Chen, Y.W.Bycroft, M.

(2003) Protein Sci. 12: 1483

  • DOI: 10.1110/ps.0302303
  • Primary Citation of Related Structures:  1GO0
  • Also Cited By: 1W3E

  • PubMed Abstract: 
  • To understand the structural basis of thermostability, we have determined the solution structure of a thermophilic ribosomal protein L30e from Thermococcus celer by NMR spectroscopy. The conformational stability of T. celer L30e was measured by guani ...

    To understand the structural basis of thermostability, we have determined the solution structure of a thermophilic ribosomal protein L30e from Thermococcus celer by NMR spectroscopy. The conformational stability of T. celer L30e was measured by guanidine and thermal-induced denaturation, and compared with that obtained for yeast L30e, a mesophilic homolog. The melting temperature of T. celer L30e was 94 degrees C, whereas the yeast protein denatured irreversibly at temperatures >45 degrees C. The two homologous proteins also differ greatly in their stability at 25 degrees C: the free energy of unfolding was 45 kJ/mole for T. celer L30e and 14 kJ/mole for the yeast homolog. The solution structure of T. celer L30e was compared with that of the yeast homolog. Although the two homologous proteins do not differ significantly in their number of hydrogen bonds and the amount of solvent accessible surface area buried with folding, the thermophilic T. celer L30e was found to have more long-range ion pairs, more proline residues in loops, and better helix capping residues in helix-1 and helix-4. A K9A variant of T. celer L30e was created by site-directed mutagenesis to examine the role of electrostatic interactions on protein stability. Although the melting temperatures of the K9A variant is approximately 8 degrees C lower than that of the wild-type L30e, their difference in T(m) is narrowed to approximately 4.2 degrees C at 0.5 M NaCl. This salt-dependency of melting temperatures strongly suggests that electrostatic interactions contribute to the thermostability of T. celer L30e.


    Related Citations: 
    • Local Folding Coupled to RNA Binding in the Yeast Ribosomal Protein L30
      Mao, H.,Willamson, J.R.
      (1999) J.Mol.Biol. 292: 345
    • A Novel Loop-Loop Recognition Motif in the Yeast Ribosomal Protein L30 Autoregulatory RNA Complex
      Mao, H.,White, S.A.,Willamson, J.R.
      (1999) Nat.Struct.Mol.Biol. 6: 1139
    • The Complete Atomic Structure of the Large Ribosomal Subunit at 2.4 A Resolution
      Ban, N.,Nissen, P.,Hansen, J.,Moore, P.B.,Steitz, T.A.
      (2000) Science 289: 905


    Organizational Affiliation

    Department of Biochemistry and Molecular Biotechnology Programme, Room 507B, Mong Man Wai Building, The Chinese University of Hong Kong, Shatin, Hong Kong, China. kbwong@cuhk.edu.hk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
50S RIBOSOMAL PROTEIN L30E
A
102Thermococcus celerGene Names: rpl30e (rpl30)
Find proteins for P29160 (Thermococcus celer)
Go to UniProtKB:  P29160
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 
  • Selection Criteria: MINIMIZED AVERAGE STRUCTURE OF BEST 10 STRUCTURES WITH THE LOWEST ENERGY 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-06-12
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance