1SMB

Crystal Structure of Golgi-Associated PR-1 protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.188 

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This is version 1.2 of the entry. See complete history


Literature

Structural analysis of the human Golgi-associated plant pathogenesis related protein GAPR-1 implicates dimerization as a regulatory mechanism

Serrano, R.L.Kuhn, A.Hendricks, A.Helms, J.B.Sinning, I.Groves, M.R.

(2004) J Mol Biol 339: 173-183

  • DOI: 10.1016/j.jmb.2004.03.015
  • Primary Citation of Related Structures:  
    1SMB

  • PubMed Abstract: 
  • The plant pathogenesis related proteins group 1 (PR-1) and a variety of related mammalian proteins constitute a PR-1 protein family that share sequence and structural similarities. GAPR-1 is a unique family member as thus far it is the only PR-1 family m ...

    The plant pathogenesis related proteins group 1 (PR-1) and a variety of related mammalian proteins constitute a PR-1 protein family that share sequence and structural similarities. GAPR-1 is a unique family member as thus far it is the only PR-1 family member that is not co-translationally targeted to the lumen of the endoplasmic reticulum before trafficking to either vacuoles or secretion. Here we report that GAPR-1 may form dimers in vitro and in vivo, as determined by yeast two-hybrid screening, biochemical and biophysical assays. The 1.55A crystal structure demonstrates that GAPR-1 is structurally homologous to the other PR-1 family members previously solved (p14a and Ves V 5). Through an examination of inter-molecular interactions between GAPR-1 molecules in the crystal lattice, we propose a number of the highly conserved amino acid residues of the PR-1 family to be involved in the regulation of dimer formation of GAPR-1 with potential implications for other PR-1 family members. We show that mutagenesis of these conserved amino acid residues leads to a greatly increased dimer population. A recent report suggests that PR-1 family members may exhibit serine protease activity and further examination of the dimer interface of GAPR-1 indicates that a catalytic triad similar to that of serine proteases may be formed across the dimer interface by residues from both molecules within the dimer.


    Related Citations: 
    • Crystallization of a Golgi-associated PR-1-related protein (GAPR-1) that localizes to lipid-enriched microdomains
      Groves, M.R., Kuhn, A., Hendricks, A., Radke, S., Serrano, R.L., Helms, J.B., Sinning, I.
      (2004) Acta Crystallogr D Biol Crystallogr 60: 730

    Organizational Affiliation

    Biochemie-Zentrum Heidelberg, University of Heidelberg, Im Neuenheimerfeld 328, 69120 Heidelberg, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
17kD fetal brain protein A154Homo sapiensMutation(s): 2 
Gene Names: CAC12812GLIPR2C9orf19GAPR1
Find proteins for Q9H4G4 (Homo sapiens)
Explore Q9H4G4 
Go to UniProtKB:  Q9H4G4
NIH Common Fund Data Resources
PHAROS:  Q9H4G4
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
OCS
Query on OCS
AL-PEPTIDE LINKINGC3 H7 N O5 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.188 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.662α = 90
b = 73.662β = 90
c = 63.363γ = 120
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
CCP4data scaling
SHARPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-14
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance