2WNF

Crystal Structure of a Mammalian Sialyltransferase in complex with Gal-beta-1-3GalNAc-ortho-nitrophenol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural Insight Into Mammalian Sialyltransferases.

Rao, F.V.Rich, J.R.Rakic, B.Buddai, S.Schwartz, M.F.Johnson, K.Bowe, C.Wakarchuk, W.W.Defrees, S.Withers, S.G.Strynadka, N.C.J.

(2009) Nat Struct Mol Biol 16: 1186

  • DOI: 10.1038/nsmb.1685
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Mammalian cell surfaces are modified by complex arrays of glycoproteins, glycolipids and polysaccharides, many of which terminate in sialic acid and have central roles in essential processes including cell recognition, adhesion and immunogenicity. Si ...

    Mammalian cell surfaces are modified by complex arrays of glycoproteins, glycolipids and polysaccharides, many of which terminate in sialic acid and have central roles in essential processes including cell recognition, adhesion and immunogenicity. Sialylation of glycoconjugates is performed by a set of sequence-related enzymes known as sialyltransferases (STs). Here we present the crystal structure of a mammalian ST, porcine ST3Gal-I, providing a structural basis for understanding the mechanism and specificity of these enzymes and for the design of selective inhibitors.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, Canada.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CMP-N-ACETYLNEURAMINATE-BETA-GALACTOSAMIDE-ALPHA-2,3-SIALYLTRANSFERASE
A
298Sus scrofaMutation(s): 0 
Gene Names: ST3GAL1SIAT4A
EC: 2.4.99.4
Find proteins for Q02745 (Sus scrofa)
Go to UniProtKB:  Q02745
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
A2G
Query on A2G

Download CCD File 
A
N-ACETYL-2-DEOXY-2-AMINO-GALACTOSE
C8 H15 N O6
OVRNDRQMDRJTHS-CBQIKETKSA-N
 Ligand Interaction
GAL
Query on GAL

Download CCD File 
A
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
CG3
Query on CG3

Download CCD File 
A
HYDROXY(2-HYDROXYPHENYL)OXOAMMONIUM
C6 H6 N O3
CQQWRROYUSGJIU-UHFFFAOYSA-O
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.25 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.987α = 90
b = 78.347β = 90
c = 99.191γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-10-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2011-11-16
    Changes: Database references, Other
  • Version 1.3: 2015-05-20
    Changes: Refinement description