4YWT

Crystal structure of full-length glypican-1 core protein after controlled crystal dehydration to 87% relative humidity


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.239 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structural Aspects of N-Glycosylations and the C-terminal Region in Human Glypican-1.

Awad, W.Adamczyk, B.Ornros, J.Karlsson, N.G.Mani, K.Logan, D.T.

(2015) J.Biol.Chem. 290: 22991-23008

  • DOI: 10.1074/jbc.M115.660878

  • PubMed Abstract: 
  • Glypicans are multifunctional cell surface proteoglycans involved in several important cellular signaling pathways. Glypican-1 (Gpc1) is the predominant heparan sulfate proteoglycan in the developing and adult human brain. The two N-linked glycans an ...

    Glypicans are multifunctional cell surface proteoglycans involved in several important cellular signaling pathways. Glypican-1 (Gpc1) is the predominant heparan sulfate proteoglycan in the developing and adult human brain. The two N-linked glycans and the C-terminal domain that attach the core protein to the cell membrane are not resolved in the Gpc1 crystal structure. Therefore, we have studied Gpc1 using crystallography, small angle x-ray scattering, and chromatographic approaches to elucidate the composition, structure, and function of the N-glycans and the C terminus and also the topology of Gpc1 with respect to the membrane. The C terminus is shown to be highly flexible in solution, but it orients the core protein transverse to the membrane, directing a surface evolutionarily conserved in Gpc1 orthologs toward the membrane, where it may interact with signaling molecules and/or membrane receptors on the cell surface, or even the enzymes involved in heparan sulfate substitution in the Golgi apparatus. Furthermore, the N-glycans are shown to extend the protein stability and lifetime by protection against proteolysis and aggregation.


    Related Citations: 
    • Improvements in the order, isotropy and electron density of glypican-1 crystals by controlled dehydration.
      Awad, W.,Svensson Birkedal, G.,Thunnissen, M.M.,Mani, K.,Logan, D.T.
      (2013) Acta Crystallogr. D Biol. Crystallogr. 69: 2524
    • Crystal structure of N-glycosylated human glypican-1 core protein: structure of two loops evolutionarily conserved in vertebrate glypican-1.
      Svensson, G.,Awad, W.,Hakansson, M.,Mani, K.,Logan, D.T.
      (2012) J. Biol. Chem. 287: 14040


    Organizational Affiliation

    From the Department of Biochemistry and Structural Biology, Centre for Molecular Protein Science, Lund University, Box 124, SE-221 00 Lund.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glypican-1
A, B, C, D
526Homo sapiensMutation(s): 3 
Gene Names: GPC1
Find proteins for P35052 (Homo sapiens)
Go to Gene View: GPC1
Go to UniProtKB:  P35052
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A, B, C, D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.239 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 46.780α = 90.00
b = 166.590β = 90.38
c = 137.700γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
PHENIXrefinement
XDSdata reduction
PHASERphasing
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-29
    Type: Initial release
  • Version 1.1: 2015-08-05
    Type: Database references
  • Version 1.2: 2015-09-30
    Type: Database references
  • Version 1.3: 2018-01-17
    Type: Data collection
  • Version 1.4: 2019-04-03
    Type: Data collection, Source and taxonomy