Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 85.59 kDa 
• Atom Count: 4,935 
• Modelled Residue Count: 593 
• Deposited Residue Count: 707 
• Unique protein chains: 1
• Unique nucleic acid chains: 1

 3UZT

Structure of the C13.18 RNA Aptamer in Complex with G Protein-Coupled Receptor Kinase 2

• PDB DOI: 10.2210/pdb3UZT/pdb
• NDB: NA1486

• Classification: TRANSFERASE/RNA
• Organism(s): Bos taurus
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 


• Deposited: 2011-12-07 Released: 2012-07-11 
• Deposition Author(s): Tesmer, J.J.G., Tesmer, V.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.51 Å
• R-Value Free: 0.317 
• R-Value Work: 0.216 
• R-Value Observed: 0.220 

Literature

Molecular mechanism for inhibition of g protein-coupled receptor kinase 2 by a selective RNA aptamer.

Tesmer, V.M., Lennarz, S., Mayer, G., Tesmer, J.J.

(2012) Structure 20: 1300-1309

• PubMed: 22727813 
• DOI: 10.1016/j.str.2012.05.002
• Primary Citation of Related Structures:  
  3UZS, 3UZT


• PubMed Abstract: 
  

Cardiovascular homeostasis is maintained in part by the rapid desensitization of activated heptahelical receptors that have been phosphorylated by G protein-coupled receptor kinase 2 (GRK2). However, during chronic heart failure GRK2 is upregulated and believed to contribute to disease progression. We have determined crystallographic structures of GRK2 bound to an RNA aptamer that potently and selectively inhibits kinase activity. Key to the mechanism of inhibition is the positioning of an adenine nucleotide into the ATP-binding pocket and interactions with the basic αF-αG loop region of the GRK2 kinase domain. Constraints imposed on the RNA by the terminal stem of the aptamer also play a role. These results highlight how a high-affinity aptamer can be used to selectively trap a novel conformational state of a protein kinase.

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Organizational Affiliation: 

Life Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109-2216, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-adrenergic receptor kinase 1	A	689	Bos taurus	Mutation(s): 1  Gene Names: ADRBK1, GRK2 EC: 2.7.11.15
UniProt
Find proteins for P21146 (Bos taurus) Explore P21146  Go to UniProtKB:  P21146

Entity ID: 2
Molecule	Chains	Length	Organism	Image
C13.18 RNA Aptamer	B	18	N/A

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.51 Å
• R-Value Free: 0.317 
• R-Value Work: 0.216 
• R-Value Observed: 0.220 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 113.346	α = 90
b = 139.719	β = 90
c = 60.949	γ = 90

Software Package:

Software Name	Purpose
MAR345dtb	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-07-11 
Deposition Author(s): Tesmer, J.J.G., Tesmer, V.M.

Revision History  

• Version 1.0: 2012-07-11
  Type: Initial release
  
• Version 1.1: 2012-08-29
  Changes: Database references