3S0K

Crystal Structure of Human Glycolipid Transfer Protein complexed with glucosylceramide containing oleoyl acyl chain (18:1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.182 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.152 

wwPDB Validation   3D Report Full Report



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 proteinA209Homo 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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
03F
Query on 03F

Download CCD File 
A
(9Z)-N-[(2S,3R,4E)-1-(beta-D-glucopyranosyloxy)-3-hydroxyoctadec-4-en-2-yl]octadec-9-enamide
C42 H79 N O8
MVGFIPNJBNBHNC-HVFXMTMESA-N
 Ligand Interaction
NI
Query on NI

Download CCD File 
A
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.182 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.152 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.659α = 90
b = 61.646β = 90
c = 67.214γ = 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