2PVU

Crystal structures of the arginine-, lysine-, histidine-binding protein ArtJ from the thermophilic bacterium Geobacillus stearothermophilus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.174 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structures and mutational analysis of the arginine-, lysine-, histidine-binding protein ArtJ from Geobacillus stearothermophilus. Implications for interactions of ArtJ with its cognate ATP-binding cassette transporter, Art(MP)2

Vahedi-Faridi, A.Eckey, V.Scheffel, F.Alings, C.Landmesser, H.Schneider, E.Saenger, W.

(2008) J.Mol.Biol. 375: 448-459

  • DOI: 10.1016/j.jmb.2007.10.049
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • ArtJ is the substrate-binding component (receptor) of the ATP-binding cassette (ABC) transport system ArtJ-(MP)(2) from the thermophilic bacterium Geobacillus stearothermophilus that is specific for arginine, lysine, and histidine. The highest affini ...

    ArtJ is the substrate-binding component (receptor) of the ATP-binding cassette (ABC) transport system ArtJ-(MP)(2) from the thermophilic bacterium Geobacillus stearothermophilus that is specific for arginine, lysine, and histidine. The highest affinity is found for arginine (K(d)=0.039(+/-0.014) microM), while the affinities for lysine and histidine are about tenfold lower. We have determined the X-ray structures of ArtJ liganded with each of these substrates at resolutions of 1.79 A (arginine), 1.79 A (lysine), and 2.35 A (histidine), respectively. As found for other solute receptors, the polypeptide chain is folded into two distinct domains (lobes) connected by a hinge. The interface between the lobes forms the substrate-binding pocket whose geometry is well preserved in all three ArtJ/amino acid complexes. Structure-derived mutational analyses indicated the crucial role of a region in the carboxy-terminal lobe of ArtJ in contacting the transport pore Art(MP)(2) and revealed the functional importance of Gln132 and Trp68. While variant Gln132Leu exhibited lower binding affinity for arginine but no binding of lysine and histidine, the variant Trp68Leu had lost binding activity for all three substrates. The results are discussed in comparison with known structures of homologous proteins from mesophilic bacteria.


    Organizational Affiliation

    Institut für Chemie und Biochemie/Kristallographie, Freie Universitaet Berlin, Takustr. 6, 14195 Berlin, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ArtJ
A
272Geobacillus stearothermophilusMutation(s): 0 
Find proteins for D0VWX8 (Geobacillus stearothermophilus)
Go to UniProtKB:  D0VWX8
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
LYS
Query on LYS

Download SDF File 
Download CCD File 
A
LYSINE
C6 H15 N2 O2
KDXKERNSBIXSRK-YFKPBYRVSA-O
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
LYSKd: 490 nM BINDINGMOAD
LYSKd: 490 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.174 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 68.268α = 90.00
b = 73.887β = 90.00
c = 102.681γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data scaling
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-01-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance