3RWV

Crystal Structure of apo-form of Human Glycolipid Transfer Protein at 1.5 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.146 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Enhanced selectivity for sulfatide by engineered human glycolipid transfer protein.

Samygina, V.R.Popov, A.N.Cabo-Bilbao, A.Ochoa-Lizarralde, B.Goni-de-Cerio, F.Zhai, X.Molotkovsky, J.G.Patel, D.J.Brown, R.E.Malinina, L.

(2011) Structure 19: 1644-1654

  • DOI: 10.1016/j.str.2011.09.011
  • Primary Citation of Related Structures:  
    3RZN, 3S0I, 3S0K, 3RIC, 3RWV

  • PubMed Abstract: 
  • Human glycolipid transfer protein (GLTP) fold represents a novel structural motif for lipid binding/transfer and reversible membrane translocation. GLTPs transfer glycosphingolipids (GSLs) that are key regulators of cell growth, division, surface adh ...

    Human glycolipid transfer protein (GLTP) fold represents a novel structural motif for lipid binding/transfer and reversible membrane translocation. GLTPs transfer glycosphingolipids (GSLs) that are key regulators of cell growth, division, surface adhesion, and neurodevelopment. Herein, we report structure-guided engineering of the lipid binding features of GLTP. New crystal structures of wild-type GLTP and two mutants (D48V and A47D‖D48V), each containing bound N-nervonoyl-sulfatide, reveal the molecular basis for selective anchoring of sulfatide (3-O-sulfo-galactosylceramide) by D48V-GLTP. Directed point mutations of "portal entrance" residues, A47 and D48, reversibly regulate sphingosine access to the hydrophobic pocket via a mechanism that could involve homodimerization. "Door-opening" conformational changes by phenylalanines within the hydrophobic pocket are revealed during lipid encapsulation by new crystal structures of bona fide apo-GLTP and GLTP complexed with N-oleoyl-glucosylceramide. The development of "engineered GLTPs" with enhanced specificity for select GSLs provides a potential new therapeutic approach for targeting GSL-mediated pathologies.


    Organizational Affiliation

    Structural Biology Unit, CIC bioGUNE, Technology Park of Bizkaia, 48160 Derio-Bilbao, Spain.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glycolipid transfer proteinAB209Homo sapiensMutation(s): 0 
Gene Names: GLTP
Find proteins for Q9NZD2 (Homo sapiens)
Explore Q9NZD2 
Go to UniProtKB:  Q9NZD2
NIH Common Fund Data Resources
PHAROS  Q9NZD2
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.146 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.205α = 90
b = 82.205β = 90
c = 148.275γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
AMoREphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-08
    Type: Initial release
  • Version 1.1: 2017-10-25
    Changes: Author supporting evidence