1AN7

RIBOSOMAL PROTEIN S8 FROM THERMUS THERMOPHILUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.162 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of ribosomal protein S8 from Thermus thermophilus reveals a high degree of structural conservation of a specific RNA binding site.

Nevskaya, N.Tishchenko, S.Nikulin, A.al-Karadaghi, S.Liljas, A.Ehresmann, B.Ehresmann, C.Garber, M.Nikonov, S.

(1998) J.Mol.Biol. 279: 233-244

  • DOI: 10.1006/jmbi.1998.1758

  • PubMed Abstract: 
  • S8 is one of the core ribosomal proteins. It binds to 16 S RNA with high affinity and independently of other ribosomal proteins. It also acts as a translational repressor in Escherichia coli by binding to its own mRNA. The structure of Thermus thermo ...

    S8 is one of the core ribosomal proteins. It binds to 16 S RNA with high affinity and independently of other ribosomal proteins. It also acts as a translational repressor in Escherichia coli by binding to its own mRNA. The structure of Thermus thermophilus S8 has been determined by the method of multiple isomorphous replacement at 2.9 A resolution and refined to a crystallographic R-factor of 16.2% (Rfree 27.5%). The two domains of the structure have an alpha/beta fold and are connected by a long protruding loop. The two molecules in the asymmetric unit of the crystal interact through an extensive hydrophobic core and form a tightly associated dimer, while symmetry-related molecules form a joint beta-sheet of mixed type. This type of protein-protein interaction could be realized within the ribosomal assembly. A comparison of the structures of T. thermophilus and Bacillus stearothermophilus S8 shows that the interdomain loop is eight residues longer in the former and reveals high structural conservation of an extensive region, located in the C-terminal domain. From mutational studies this region was proposed earlier to be involved in specific interaction with RNA. On the basis of these data and on the comparison of the two structures of S8, it is proposed that the three-dimensional structure of specific RNA binding sites in ribosomal proteins is highly conserved among different species.


    Related Citations: 
    • Crystallization and Preliminary Crystallographic Analysis of Ribosomal Protein S8 from Thermus Thermophilus
      Tishchenko, S.V.,Vysotskaya, V.S.,Fomenkova, N.P.,Nikonov, S.V.,Ehresmann, B.,Garber, M.B.
      (1997) Proteins 27: 309


    Organizational Affiliation

    Institute of Protein Research, Russian Academy of Sciences, Moscow Region, Russia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S8
A, B
136Thermus thermophilusGene Names: rpsH (rps8)
Find proteins for P24319 (Thermus thermophilus)
Go to UniProtKB:  P24319
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.162 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 67.860α = 90.00
b = 67.860β = 90.00
c = 174.090γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
DENZOdata reduction
X-PLORrefinement
X-PLORphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-07-01
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance