Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 52.54 kDa 
• Atom Count: 3482 
• Modelled Residue Count: 250 
• Deposited Residue Count: 250 
• Unique protein chains: 1
• Unique nucleic acid chains: 1

1QA6

CRYSTAL STRUCTURE OF A CONSERVED RIBOSOMAL PROTEIN-RNA COMPLEX

• PDB DOI: 10.2210/pdb1QA6/pdb
• NDB: PR0015

• Classification: RIBOSOME
• Organism(s): Geobacillus stearothermophilus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1999-04-15 Released: 1999-05-25 
• Deposition Author(s): Conn, G.L., Draper, D.E., Lattman, E.E., Gittis, A.G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.321 
• R-Value Work: 0.240 
• R-Value Observed: 0.240 

Literature

Crystal structure of a conserved ribosomal protein-RNA complex.

Conn, G.L., Draper, D.E., Lattman, E.E., Gittis, A.G.

(1999) Science 284: 1171-1174

• PubMed: 10325228 
• DOI: 10.1126/science.284.5417.1171
• Primary Citation of Related Structures:  
  1QA6


• PubMed Abstract: 
  

The structure of a highly conserved complex between a 58-nucleotide domain of large subunit ribosomal RNA and the RNA-binding domain of ribosomal protein L11 has been solved at 2.8 angstrom resolution. It reveals a precisely folded RNA structure that is stabilized by extensive tertiary contacts and contains an unusually large core of stacked bases. A bulge loop base from one hairpin of the RNA is intercalated into the distorted major groove of another helix; the protein locks this tertiary interaction into place by binding to the intercalated base from the minor groove side. This direct interaction with a key ribosomal RNA tertiary interaction suggests that part of the role of L11 is to stabilize an unusual RNA fold within the ribosome.

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Organizational Affiliation: 

Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA.

Macromolecules

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
RIBOSOMAL PROTEIN L11	C [auth A], D [auth B]	67	Geobacillus stearothermophilus	Mutation(s): 0  Gene Names: rplK
UniProt
Find proteins for P56210 (Geobacillus stearothermophilus) Explore P56210  Go to UniProtKB:  P56210

Entity ID: 1
Molecule	Chains	Length	Organism	Image
58 NUCLEOTIDE RIBOSOMAL RNA DOMAIN	A [auth C], B [auth D]	58	N/A

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
OS	G [auth C], H [auth C], K [auth D], L [auth D]	OSMIUM ION Os XQBKHDFIPARBOX-UHFFFAOYSA-N
MG	E [auth C], F [auth C], I [auth D], J [auth D]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.321 
• R-Value Work: 0.240 
• R-Value Observed: 0.240 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 150.675	α = 90
b = 150.675	β = 90
c = 63.841	γ = 90

Software Package:

Software Name	Purpose
MLPHARE	phasing
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-04-15 
• Released Date: 1999-05-25 
Deposition Author(s): Conn, G.L., Draper, D.E., Lattman, E.E., Gittis, A.G.

Revision History  

• Version 1.0: 1999-05-25
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance