4JA0

Crystal structure of the invertebrate bi-functional purine biosynthesis enzyme PAICS at 2.8 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the invertebrate bifunctional purine biosynthesis enzyme PAICS at 2.8 angstrom resolution.

Taschner, M.Basquin, J.Benda, C.Lorentzen, E.

(2013) Proteins 81: 1473-1478

  • DOI: 10.1002/prot.24296

  • PubMed Abstract: 
  • Two important steps of the de novo purine biosynthesis pathway are catalyzed by the 5-aminoimidazole ribonucleotide carboxylase and the 4-(N-succinylcarboxamide)-5-aminoimidazole ribonucleotide synthetase enzymes. In most eukaryotic organisms, these ...

    Two important steps of the de novo purine biosynthesis pathway are catalyzed by the 5-aminoimidazole ribonucleotide carboxylase and the 4-(N-succinylcarboxamide)-5-aminoimidazole ribonucleotide synthetase enzymes. In most eukaryotic organisms, these two activities are present in the bifunctional enzyme complex known as PAICS. We have determined the 2.8-Å resolution crystal structure of the 350-kDa invertebrate PAICS from insect cells (Trichoplusia ni) using single-wavelength anomalous dispersion methods. Comparison of insect PAICS to human and prokaryotic homologs provides insights into substrate binding and reveals a highly conserved enzymatic framework across divergent species.


    Organizational Affiliation

    Max-Planck-Institute of Biochemistry, Department of Structural Cell Biology, Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phosphoribosylaminoimidazole carboxylase
A, B, C, D
425Bombyx moriGene Names: LOC732910
Find proteins for Q1HQ66 (Bombyx mori)
Go to UniProtKB:  Q1HQ66
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.199 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 138.729α = 90.00
b = 219.726β = 90.00
c = 60.645γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-27
    Type: Initial release
  • Version 1.1: 2013-04-10
    Type: Database references
  • Version 1.2: 2013-10-23
    Type: Database references