Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 150.51 kDa 
• Atom Count: 10,485 
• Modelled Residue Count: 1,206 
• Deposited Residue Count: 1,211 
• Unique protein chains: 2
• Unique nucleic acid chains: 1

 1EIY

THE CRYSTAL STRUCTURE OF PHENYLALANYL-TRNA SYNTHETASE FROM THERMUS THERMOPHILUS COMPLEXED WITH COGNATE TRNAPHE

• PDB DOI: 10.2210/pdb1EIY/pdb
• NDB: PR0024

• Classification: LIGASE/RNA
• Organism(s): Thermus thermophilus HB8
• Mutation(s): No 


• Deposited: 2000-02-29 Released: 2000-03-06 
• Deposition Author(s): Goldgur, Y., Mosyak, L., Reshetnikova, L., Ankilova, V., Safro, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 0.287 
• R-Value Work: 0.221 

Literature

The crystal structure of phenylalanyl-tRNA synthetase from thermus thermophilus complexed with cognate tRNAPhe.

Goldgur, Y., Mosyak, L., Reshetnikova, L., Ankilova, V., Lavrik, O., Khodyreva, S., Safro, M.

(1997) Structure 5: 59-68

• PubMed: 9016717 
• DOI: 10.1016/s0969-2126(97)00166-4
• Primary Citation of Related Structures:  
  1EIY


• PubMed Abstract: 
  

In the translation of the genetic code each aminoacyl-tRNA synthetase (aaRS) must recognize its own (cognate) tRNA and attach the corresponding amino acid to the acceptor end of tRNA, discriminating all the others. The(alphabeta)2 phenylalanyl-tRNA synthetase (PheRS) is one of the most complex enzymes in the aaRS family and is characterized by anomalous charging properties. Structurally, the enzyme belongs to class II aaRSs, as its catalytic domain is built around an antiparallel beta sheet, but functionally it resembles class I as it aminoacylates the 2'OH of the terminal ribose of tRNA (class II aaRSs aminoacylate the 3'OH). With the availability of the three-dimensional structure of the complex between multisubunit PheRS and tRNAPhe, a fuller picture of the specific tRNA-aaRS interactions is beginning to emerge.

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Organizational Affiliation: 

Department of Structural Biology, Weizmann Institute of Science, 76100 Rehovot, Israel.

Macromolecules

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PHENYLALANYL-TRNA SYNTHETASE	B [auth A]	350	Thermus thermophilus HB8	Mutation(s): 0  Gene Names: pheS, TTHA1958 EC: 6.1.1.20
UniProt
Find proteins for Q5SGX2 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8)) Explore Q5SGX2  Go to UniProtKB:  Q5SGX2

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
PHENYLALANYL-TRNA SYNTHETASE	C [auth B]	785	Thermus thermophilus HB8	Mutation(s): 0  Gene Names: pheT, TTHA1959 EC: 6.1.1.20
UniProt
Find proteins for Q5SGX1 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8)) Explore Q5SGX1  Go to UniProtKB:  Q5SGX1

Entity ID: 1
Molecule	Chains	Length	Organism	Image
TRNA(PHE)	A [auth C]	76	Thermus thermophilus HB8

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 0.287 
• R-Value Work: 0.221 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 175	α = 90
b = 175	β = 90
c = 140.6	γ = 120

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-03-06 
Deposition Author(s): Goldgur, Y., Mosyak, L., Reshetnikova, L., Ankilova, V., Safro, M.

Revision History  

• Version 1.0: 2000-03-06
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.3: 2017-10-04
  Changes: Refinement description