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 
  • R-Value Observed: 0.240 

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Ligand Structure Quality Assessment 


This is version 1.6 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: https://doi.org/10.1074/jbc.M115.660878
  • Primary Citation of Related Structures:  
    4YWT

  • 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 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.


  • Organizational Affiliation

    the Department of Biochemistry and Cell Biology, University of Gothenburg, Box 440, SE-40530 Gothenburg, and.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glypican-1
A, B, C, D
526Homo sapiensMutation(s): 3 
Gene Names: GPC1
UniProt & NIH Common Fund Data Resources
Find proteins for P35052 (Homo sapiens)
Explore P35052 
Go to UniProtKB:  P35052
PHAROS:  P35052
GTEx:  ENSG00000063660 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP35052
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
E [auth A],
H [auth B],
K [auth C],
O [auth D]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
CA
Query on CA

Download Ideal Coordinates CCD File 
F [auth A]
G [auth A]
I [auth B]
J [auth B]
L [auth C]
F [auth A],
G [auth A],
I [auth B],
J [auth B],
L [auth C],
M [auth C],
N [auth C],
P [auth D],
Q [auth D]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.240 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.78α = 90
b = 166.59β = 90.38
c = 137.7γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-29
    Type: Initial release
  • Version 1.1: 2015-08-05
    Changes: Database references
  • Version 1.2: 2015-09-30
    Changes: Database references
  • Version 1.3: 2018-01-17
    Changes: Data collection
  • Version 1.4: 2019-04-03
    Changes: Data collection, Source and taxonomy
  • Version 1.5: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary
  • Version 1.6: 2024-01-10
    Changes: Data collection, Database references, Refinement description, Structure summary