1AN7

RIBOSOMAL PROTEIN S8 FROM THERMUS THERMOPHILUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.162 

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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
  • Primary Citation of Related Structures:  
    1AN7

  • 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 thermophilus S8 has been determined by the method of multiple isomorphous replacement at 2 ...

    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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RIBOSOMAL PROTEIN S8A, B136Thermus thermophilusMutation(s): 0 
Gene Names: rps8rpsH
UniProt
Find proteins for P24319 (Thermus thermophilus)
Explore P24319 
Go to UniProtKB:  P24319
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP24319
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.162 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.86α = 90
b = 67.86β = 90
c = 174.09γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

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