1DK1

DETAILED VIEW OF A KEY ELEMENT OF THE RIBOSOME ASSEMBLY: CRYSTAL STRUCTURE OF THE S15-RRNA COMPLEX

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.213 

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This is version 1.5 of the entry. See complete history. 


Literature

Crystal structure of the S15-rRNA complex.

Nikulin, A., Serganov, A., Ennifar, E., Tishchenko, S., Nevskaya, N., Shepard, W., Portier, C., Garber, M., Ehresmann, B., Ehresmann, C., Nikonov, S., Dumas, P.

(2000) Nat Struct Biol 7: 273-277

  • DOI: 10.1038/74028
  • Primary Citation of Related Structures:  
    1DK1

  • PubMed Abstract: 

    • In bacterial ribosomes, the small (30S) ribosomal subunit is composed of 16S rRNA and 21 distinct proteins. Ribosomal protein S15 is of particular interest because it binds primarily to 16S rRNA and is required for assembly of the small subunit and for intersubunit association, thus representing a key element in the assembly of a whole ribosome ...

    In bacterial ribosomes, the small (30S) ribosomal subunit is composed of 16S rRNA and 21 distinct proteins. Ribosomal protein S15 is of particular interest because it binds primarily to 16S rRNA and is required for assembly of the small subunit and for intersubunit association, thus representing a key element in the assembly of a whole ribosome. Here we report the 2.8 ¿ resolution crystal structure of the highly conserved S15-rRNA complex. Protein S15 interacts in the minor groove with a G-U/G-C motif and a three-way junction. The latter is constrained by a conserved base triple and stacking interactions, and locked into place by magnesium ions and protein side chains, mainly through interactions with the unique three-dimensional geometry of the backbone. The present structure gives insights into the dual role of S15 in ribosome assembly and translational regulation.

    Organizational Affiliation: 

    Institute of Protein Research, Pushchino, Moscow Region, 142292, Russia.



Macromolecules

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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S15B [auth A]86Thermus thermophilusMutation(s): 4 
Gene Names: rpsO, rps15
UniProt
Find proteins for P80378 (Thermus thermophilus)
Explore P80378 
Go to UniProtKB:  P80378
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80378
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsLengthOrganismImage
RRNA FRAGMENTA [auth B]57Thermus thermophilus
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE		B [auth A]L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.213 
  • Space Group: P 64 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 128.8α = 90
b = 128.8β = 90
c = 65.1γ = 120
Software Package:
Software NamePurpose
SHARPphasing
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: 2000-04-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2011-12-28
    Changes: Advisory
  • Version 1.4: 2018-01-31
    Changes: Experimental preparation
  • Version 1.5: 2021-11-03
    Changes: Data collection, Database references, Derived calculations