Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 18230.28 
• Atom Count: 1120 
• Residue Count: 155 
• Unique protein chains: 1

1HUS

RIBOSOMAL PROTEIN S7

• DOI: 10.2210/pdb1HUS/pdb

• Classification: RIBOSOMAL PROTEIN
• Organism(s): Geobacillus stearothermophilus
• Expression System: Escherichia coli


• Deposited: 1997-08-08 Released: 1998-01-28 
• Deposition Author(s): Hosaka, H., Nakagawa, A., Tanaka, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Free: 0.270 
• R-Value Work: 0.216 

Literature

Ribosomal protein S7: a new RNA-binding motif with structural similarities to a DNA architectural factor.

Hosaka, H., Nakagawa, A., Tanaka, I., Harada, N., Sano, K., Kimura, M., Yao, M., Wakatsuki, S.

(1997) Structure 5: 1199-1208

• PubMed: 9331423 


• PubMed Abstract: 
  

The ribosome is a ribonucleoprotein complex which performs the crucial function of protein biosynthesis. Its role is to decode mRNAs within the cell and to synthesize the corresponding proteins. Ribosomal protein S7 is located at the head of the small (30S) subunit of the ribosome and faces into the decoding centre. S7 is one of the primary 16S rRNA-binding proteins responsible for initiating the assembly of the head of the 30S subunit. In addition, S7 has been shown to be the major protein component to cross-link with tRNA molecules bound at both the aminoacyl-tRNA (A) and peptidyl-tRNA (P) sites of the ribosome. The ribosomal protein S7 clearly plays an important role in ribosome function. It was hoped that an atomic-resolution structure of this protein would aid our understanding of ribosomal mechanisms.

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Related Citations: 

• Crystallization and Preliminary X-Ray Crystallographic Study of the Ribosomal Protein S7 from Bacillus Stearothermophilus
  Harada, N.,Sano, K.,Kimura, M.,Hosaka, H.,Nakagawa, A.,Tanaka, I.
  (1997) J.Struct.Biol. 120: 112




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Organizational Affiliation: 

Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
RIBOSOMAL PROTEIN S7	A	155	Geobacillus stearothermophilus	Mutation(s): 0  Gene Names: rpsG
Find proteins for P22744 (Geobacillus stearothermophilus) Go to UniProtKB:  P22744

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• R-Value Free: 0.270 
• R-Value Work: 0.216 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 54.400	α = 90.00
b = 131.020	β = 90.00
c = 29.150	γ = 90.00

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-08-08 
• Released Date: 1998-01-28 
• Deposition Author(s): Hosaka, H., Nakagawa, A., Tanaka, I.

Revision History 

• Version 1.0: 1998-01-28
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance