1SEI

STRUCTURE OF 30S RIBOSOMAL PROTEIN S8

• PDB DOI:  https://doi.org/10.2210/pdb1SEI/pdb

• Classification: RIBOSOMAL PROTEIN
• Organism(s): Geobacillus stearothermophilus
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 1996-08-14 Released: 1997-03-12 
• Deposition Author(s): Davies, C., Ramakrishnan, V., White, S.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.288 
• R-Value Work: 0.222 
• R-Value Observed: 0.222 

Literature

Structural evidence for specific S8-RNA and S8-protein interactions within the 30S ribosomal subunit: ribosomal protein S8 from Bacillus stearothermophilus at 1.9 A resolution.

Davies, C., Ramakrishnan, V., White, S.W.

(1996) Structure 4: 1093-1104

• PubMed: 8805594 
• DOI: https://doi.org/10.1016/s0969-2126(96)00115-3
• Primary Citation of Related Structures:  
  1SEI


• PubMed Abstract: 
  

Prokaryotic ribosomal protein S8 is an important RNA-binding protein that occupies a central position within the small ribosomal subunit. It interacts extensively with 16S rRNA and is crucial for the correct folding of the central domain of the rRNA. S8 also controls the synthesis of several ribosomal proteins by binding to mRNA. It binds specifically to very similar sites in the two RNA molecules.

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Organizational Affiliation: 

Department of Microbiology, Duke University Medical Center, Durham, NC 27710, USA.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 29.31 kDa 
• Atom Count: 2,175 
• Modelled Residue Count: 260 
• Deposited Residue Count: 260 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RIBOSOMAL PROTEIN S8	A, B	130	Geobacillus stearothermophilus	Mutation(s): 0  Gene Names: BACILLUS STEAROTHERMOPHILUS, rpsH
UniProt
Find proteins for P56209 (Geobacillus stearothermophilus) Explore P56209  Go to UniProtKB:  P56209

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.288 
• R-Value Work: 0.222 
• R-Value Observed: 0.222 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 80.16	α = 90
b = 85.96	β = 90
c = 39.59	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-03-12 
Deposition Author(s): Davies, C., Ramakrishnan, V., White, S.W.

Revision History  

• Version 1.0: 1997-03-12
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance