2QK4

Human glycinamide ribonucleotide synthetase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.174 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural studies of tri-functional human GART.

Welin, M.Grossmann, J.G.Flodin, S.Nyman, T.Stenmark, P.Tresaugues, L.Kotenyova, T.Johansson, I.Nordlund, P.Lehtio, L.

(2010) Nucleic Acids Res 38: 7308-7319

  • DOI: 10.1093/nar/gkq595
  • Primary Citation of Related Structures:  
    2V9Y, 2QK4

  • PubMed Abstract: 
  • Human purine de novo synthesis pathway contains several multi-functional enzymes, one of which, tri-functional GART, contains three enzymatic activities in a single polypeptide chain. We have solved structures of two domains bearing separate catalytic functions: glycinamide ribonucleotide synthetase and aminoimidazole ribonucleotide synthetase ...

    Human purine de novo synthesis pathway contains several multi-functional enzymes, one of which, tri-functional GART, contains three enzymatic activities in a single polypeptide chain. We have solved structures of two domains bearing separate catalytic functions: glycinamide ribonucleotide synthetase and aminoimidazole ribonucleotide synthetase. Structures are compared with those of homologous enzymes from prokaryotes and analyzed in terms of the catalytic mechanism. We also report small angle X-ray scattering models for the full-length protein. These models are consistent with the enzyme forming a dimer through the middle domain. The protein has an approximate seesaw geometry where terminal enzyme units display high mobility owing to flexible linker segments. This resilient seesaw shape may facilitate internal substrate/product transfer or forwarding to other enzymes in the pathway.


    Organizational Affiliation

    Structural Genomics Consortium, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177 Stockholm, Sweden.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Trifunctional purine biosynthetic protein adenosine-3A, B452Homo sapiensMutation(s): 1 
Gene Names: GARTPGFTPRGS
EC: 6.3.4.13 (PDB Primary Data), 6.3.3.1 (UniProt), 2.1.2.2 (UniProt)
Find proteins for P22102 (Homo sapiens)
Explore P22102 
Go to UniProtKB:  P22102
NIH Common Fund Data Resources
PHAROS:  P22102
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.174 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.28α = 90
b = 79.81β = 104.07
c = 113.87γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
ProDCdata collection
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2007-07-24
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance