4F04

A Second Allosteric site in E. coli Aspartate Transcarbamoylase: R-state ATCase with UTP bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.175 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A second allosteric site in Escherichia coli aspartate transcarbamoylase.

Peterson, A.W.Cockrell, G.M.Kantrowitz, E.R.

(2012) Biochemistry 51: 4776-4778

  • DOI: 10.1021/bi3006219
  • Primary Citation of Related Structures:  
    4F04

  • PubMed Abstract: 
  • Escherichia coli aspartate transcarbamoylase is feedback inhibited by CTP and UTP in the presence of CTP. Here, we show by X-ray crystallography that UTP binds to a unique site on each regulatory chain of the enzyme that is near but not overlapping w ...

    Escherichia coli aspartate transcarbamoylase is feedback inhibited by CTP and UTP in the presence of CTP. Here, we show by X-ray crystallography that UTP binds to a unique site on each regulatory chain of the enzyme that is near but not overlapping with the known CTP site. These results bring into question all of the previously proposed mechanisms of allosteric regulation in aspartate transcarbamoylase.


    Organizational Affiliation

    Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Aspartate carbamoyltransferase catalytic chainAC310Escherichia coli K-12Mutation(s): 0 
Gene Names: b4245JW4204pyrB
EC: 2.1.3.2
Find proteins for P0A786 (Escherichia coli (strain K12))
Explore P0A786 
Go to UniProtKB:  P0A786
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Aspartate carbamoyltransferase regulatory chainBD153Escherichia coli K-12Mutation(s): 0 
Gene Names: b4244JW4203pyrI
EC: 2.1.3.2
Find proteins for P0A7F3 (Escherichia coli (strain K12))
Explore P0A7F3 
Go to UniProtKB:  P0A7F3
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
UTP
Query on UTP

Download CCD File 
B, D
URIDINE 5'-TRIPHOSPHATE
C9 H15 N2 O15 P3
PGAVKCOVUIYSFO-XVFCMESISA-N
 Ligand Interaction
PAL
Query on PAL

Download CCD File 
A, C
N-(PHOSPHONACETYL)-L-ASPARTIC ACID
C6 H10 N O8 P
ZZKNRXZVGOYGJT-VKHMYHEASA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
B, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.175 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.277α = 90
b = 121.277β = 90
c = 155.109γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-11
    Type: Initial release
  • Version 1.1: 2013-06-26
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description