4WQ4

E. coli YgjD(E12A)-YeaZ heterodimer in complex with ATP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The ATP-mediated formation of the YgjD-YeaZ-YjeE complex is required for the biosynthesis of tRNA t6A in Escherichia coli.

Zhang, W.Collinet, B.Perrochia, L.Durand, D.van Tilbeurgh, H.

(2015) Nucleic Acids Res 43: 1804-1817

  • DOI: 10.1093/nar/gku1397
  • Primary Citation of Related Structures:  
    4WQ4, 4WQ5, 4YDU

  • PubMed Abstract: 
  • The essential and universal N(6)-threonylcarbamoyladenosine (t(6)A) modification at position 37 of ANN-decoding tRNAs plays a pivotal role in translational fidelity through enhancement of the cognate codon recognition and stabilization of the codon-a ...

    The essential and universal N(6)-threonylcarbamoyladenosine (t(6)A) modification at position 37 of ANN-decoding tRNAs plays a pivotal role in translational fidelity through enhancement of the cognate codon recognition and stabilization of the codon-anticodon interaction. In Escherichia coli, the YgjD (TsaD), YeaZ (TsaB), YjeE (TsaE) and YrdC (TsaC) proteins are necessary and sufficient for the in vitro biosynthesis of t(6)A, using tRNA, ATP, L-threonine and bicarbonate as substrates. YrdC synthesizes the short-lived L-threonylcarbamoyladenylate (TCA), and YgjD, YeaZ and YjeE cooperate to transfer the L-threonylcarbamoyl-moiety from TCA onto adenosine at position 37 of substrate tRNA. We determined the crystal structure of the heterodimer YgjD-YeaZ at 2.3 Å, revealing the presence of an unexpected molecule of ADP bound at an atypical site situated at the YgjD-YeaZ interface. We further showed that the ATPase activity of YjeE is strongly activated by the YgjD-YeaZ heterodimer. We established by binding experiments and SAXS data analysis that YgjD-YeaZ and YjeE form a compact ternary complex only in presence of ATP. The formation of the ternary YgjD-YeaZ-YjeE complex is required for the in vitro biosynthesis of t(6)A but not its ATPase activity.


    Organizational Affiliation

    Institut de Biochimie et Biophysique Moléculaire et Cellulaire, UMR 8619, CNRS, Bâtiment 430, Université de Paris-Sud, 91405 Orsay Cedex, France herman.van-tilbeurgh@u-psud.fr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
tRNA N6-adenosine threonylcarbamoyltransferaseAB343Escherichia coli K-12Mutation(s): 1 
Gene Names: tsaDgcpygjDb3064JW3036
EC: 2.6.99.4 (PDB Primary Data), 2.3.1.234 (UniProt)
Find proteins for P05852 (Escherichia coli (strain K12))
Explore P05852 
Go to UniProtKB:  P05852
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
tRNA threonylcarbamoyladenosine biosynthesis protein TsaBCD237Escherichia coli K-12Mutation(s): 0 
Gene Names: tsaByeaZb1807JW1796
Find proteins for P76256 (Escherichia coli (strain K12))
Explore P76256 
Go to UniProtKB:  P76256
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

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A, B
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
PEG
Query on PEG

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C, D
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

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C
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

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A, B
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
FE
Query on FE

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A, B
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.27α = 109.3
b = 68.07β = 92.98
c = 87.13γ = 117.23
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-01-28
    Type: Initial release
  • Version 1.1: 2015-02-25
    Changes: Database references