Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 48.70 kDa 
• Atom Count: 3678 
• Residue Count: 405 
• Unique protein chains: 1

3TEG

Bacterial and Eukaryotic Phenylalanyl-tRNA Synthetases Catalyze Misaminoacylation of tRNAPhe with 3,4-Dihydroxy-L-Phenylalanine (L-Dopa)

• DOI: 10.2210/pdb3TEG/pdb

• Classification: LIGASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2011-08-14 Released: 2011-11-23 
• Deposition Author(s): Moor, N., Klipcan, L., Safro, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.220 
• R-Value Work: 0.169 
• R-Value Observed: 0.171 

Literature

Bacterial and Eukaryotic Phenylalanyl-tRNA Synthetases Catalyze Misaminoacylation of tRNA(Phe) with 3,4-Dihydroxy-L-Phenylalanine.

Moor, N., Klipcan, L., Safro, M.G.

(2011) Chem Biol 18: 1221-1229

• PubMed: 22035791 
• DOI: 10.1016/j.chembiol.2011.08.008
• Primary Citation of Related Structures:  
  3TEG, 3TEH


• PubMed Abstract: 
  

Aminoacyl-tRNA synthetases exert control over the accuracy of translation by selective pairing the correct amino acids with their cognate tRNAs, and proofreading the misacylated products. Here we show that three existing, structurally different phenylalanyl-tRNA synthetases-human mitochondrial (HsmtPheRS), human cytoplasmic (HsctPheRS), and eubacterial from Thermus thermophilus (TtPheRS), catalyze mischarging of tRNA(Phe) with an oxidized analog of tyrosine-L-dopa. The lowest level of L-dopa discrimination over the cognate amino acid, exhibited by HsmtPheRS, is comparable to that of tyrosyl-tRNA synthetase. HsmtPheRS and TtPheRS complexes with L-dopa revealed in the active sites an electron density shaping this ligand. HsctPheRS and TtPheRS possessing editing activity are capable of hydrolyzing the exogenous L-dopa-tRNA(Phe) as efficiently as Tyr-tRNA(Phe). However, editing activity of PheRS does not guarantee reduction of the aminoacylation error rate to escape misincorporation of L-dopa into polypeptide chains.

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Organizational Affiliation: 

Institute of Chemical Biology and Fundamental Medicine, 630090 Novosibirsk, Russia.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phenylalanyl-tRNA synthetase, mitochondrial	A	415	Homo sapiens	Mutation(s): 0  Gene Names: FARS1, FARS2, HSPC320 EC: 6.1.1.20
Find proteins for O95363 (Homo sapiens) Explore O95363  Go to UniProtKB:  O95363
NIH Common Fund Data Resources
PHAROS:  O95363 GTEx:  ENSG00000145982

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
DAH	A	3,4-DIHYDROXYPHENYLALANINE C9 H11 N O4 WTDRDQBEARUVNC-LURJTMIESA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.220 
• R-Value Work: 0.169 
• R-Value Observed: 0.171 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.185	α = 90
b = 90.587	β = 90
c = 96.076	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHENIX	model building
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-08-14 
• Released Date: 2011-11-23 
Deposition Author(s): Moor, N., Klipcan, L., Safro, M.

Revision History 

• Version 1.0: 2011-11-23
  Type: Initial release