Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 7.67 kDa 
• Atom Count: 554 
• Residue Count: 68 
• Unique protein chains: 1

1CTF

STRUCTURE OF THE C-TERMINAL DOMAIN OF THE RIBOSOMAL PROTEIN L7/L12 FROM ESCHERICHIA COLI AT 1.7 ANGSTROMS

• DOI: 10.2210/pdb1CTF/pdb

• Classification: RIBOSOMAL PROTEIN
• Organism(s): Escherichia coli
• Mutation(s): No 


• Deposited: 1986-09-02 Released: 1987-01-15 
• Deposition Author(s): Leijonmarck, M., Liljas, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Work: 0.174 

Literature

Structure of the C-terminal domain of the ribosomal protein L7/L12 from Escherichia coli at 1.7 A.

Leijonmarck, M., Liljas, A.

(1987) J Mol Biol 195: 555-579

• PubMed: 3309338 
• DOI: 10.1016/0022-2836(87)90183-5
• Primary Citation of Related Structures:  
  1CTF


• PubMed Abstract: 
  

The structure of a C-terminal fragment of the ribosomal protein L7/L12 from Escherichia coli has been refined using crystallographic data to 1.7 A resolution. The R-value is 17.4%. Six residues at the N terminus are too disordered in the structure to be localized. These residues are probably part of a hinge in the complete L7/L12 molecule. The possibility that a 2-fold crystallographic axis is a molecular 2-fold axis is discussed. A patch of invariant residues on the surface of the dimer is probably involved in functional interactions with elongation factors.

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Related Citations: 

• Structural Studies on the Protein L7(Slash)L12 from E. Coli Ribosomes
  Leijonmarck, M., Pettersson, I., Liljas, A.
  (1981) Structural Aspects Of Recognition And Assembly In Biological Macromolecules --: 761

• Crystal Structure of a Ribosomal Component at 2.6 Angstroms Resolution
  Leijonmarck, M., Eriksson, S., Liljas, A.
  (1980) Nature 286: 824

• Isolation and Crystallization of Stable Domains of the Protein L7(Slash)L12 from Escherichia Coli Ribosomes
  Liljas, A., Eriksson, S., Donner, D., Kurland, C.G.
  (1978) FEBS Lett 88: 300

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Organizational Affiliation: 

Institute of Molecular Biology, University of Uppsala, Sweden.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RIBOSOMAL PROTEIN L7/L12	A	74	Escherichia coli	Mutation(s): 0
Find proteins for P0A7K2 (Escherichia coli (strain K12)) Explore P0A7K2  Go to UniProtKB:  P0A7K2

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	A	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Work: 0.174 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.83	α = 90
b = 54.83	β = 90
c = 42.67	γ = 90

Software Package:

Software Name	Purpose
CORELS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1986-09-02 
• Released Date: 1987-01-15 
Deposition Author(s): Leijonmarck, M., Liljas, A.

Revision History 

• Version 1.0: 1987-01-15
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other