4YB6

Adenosine triphosphate phosphoribosyltransferase from Campylobacter jejuni in complex with the inhibitors AMP and histidine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Campylobacter jejuni adenosine triphosphate phosphoribosyltransferase is an active hexamer that is allosterically controlled by the twisting of a regulatory tail.

Mittelstadt, G.Moggre, G.J.Panjikar, S.Nazmi, A.R.Parker, E.J.

(2016) Protein Sci. 25: 1492-1506

  • DOI: 10.1002/pro.2948
  • Primary Citation of Related Structures:  
  • Also Cited By: 5UBI, 5UBH, 5UBG, 5UB9

  • PubMed Abstract: 
  • Adenosine triphosphate phosphoribosyltransferase (ATP-PRT) catalyzes the first committed step of the histidine biosynthesis in plants and microorganisms. Here, we present the functional and structural characterization of the ATP-PRT from the pathogen ...

    Adenosine triphosphate phosphoribosyltransferase (ATP-PRT) catalyzes the first committed step of the histidine biosynthesis in plants and microorganisms. Here, we present the functional and structural characterization of the ATP-PRT from the pathogenic ε-proteobacteria Campylobacter jejuni (CjeATP-PRT). This enzyme is a member of the long form (HisGL ) ATP-PRT and is allosterically inhibited by histidine, which binds to a remote regulatory domain, and competitively inhibited by AMP. In the crystalline form, CjeATP-PRT was found to adopt two distinctly different hexameric conformations, with an open homohexameric structure observed in the presence of substrate ATP, and a more compact closed form present when inhibitor histidine is bound. CjeATP-PRT was observed to adopt only a hexameric quaternary structure in solution, contradicting previous hypotheses favoring an allosteric mechanism driven by an oligomer equilibrium. Instead, this study supports the conclusion that the ATP-PRT long form hexamer is the active species; the tightening of this structure in response to remote histidine binding results in an inhibited enzyme.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Monash University, Clayton, Campus, Melbourne, Victoria, 3800, Australia.,Maurice Wilkins Centre, Biomolecular Interaction Centre, Christchurch, 8140, New Zealand.,Department of Chemistry, University of Canterbury, Christchurch, 8140, New Zealand.,Australian Synchrotron, Clayton, Melbourne, Victoria, 3168, Australia.,Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, 8140, New Zealand.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP phosphoribosyltransferase
A, B, C, D, E, F
300Campylobacter jejuni (strain RM1221)Mutation(s): 0 
Gene Names: hisG
EC: 2.4.2.17
Find proteins for Q5HSJ4 (Campylobacter jejuni (strain RM1221))
Go to UniProtKB:  Q5HSJ4
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D, E, F
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
AMP
Query on AMP

Download SDF File 
Download CCD File 
A, B, C, D, E, F
ADENOSINE MONOPHOSPHATE
C10 H14 N5 O7 P
UDMBCSSLTHHNCD-KQYNXXCUSA-N
 Ligand Interaction
HIS
Query on HIS

Download SDF File 
Download CCD File 
A, B, C, D, E, F
HISTIDINE
C6 H10 N3 O2
HNDVDQJCIGZPNO-YFKPBYRVSA-O
 Ligand Interaction
PEG
Query on PEG

Download SDF File 
Download CCD File 
A, B, C, D, E, F
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.195 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 91.871α = 90.00
b = 124.906β = 115.86
c = 92.809γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-03-09
    Type: Initial release
  • Version 1.1: 2017-11-01
    Type: Author supporting evidence, Data collection, Derived calculations
  • Version 1.2: 2018-09-05
    Type: Data collection, Database references