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 

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
  • Primary Citation of Related Structures:  

  • 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: ST3GAL1 (SIAT4A)
EC: 2.4.99.4
Find proteins for Q02745 (Sus scrofa)
Go to Gene View: ST3GAL1
Go to UniProtKB:  Q02745
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GAL
Query on GAL

Download SDF File 
Download CCD File 
A
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
A2G
Query on A2G

Download SDF File 
Download CCD File 
A
N-ACETYL-2-DEOXY-2-AMINO-GALACTOSE
C8 H15 N O6
OVRNDRQMDRJTHS-CBQIKETKSA-N
 Ligand Interaction
CG3
Query on CG3

Download SDF File 
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
A
L-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 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 77.987α = 90.00
b = 78.347β = 90.00
c = 99.191γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
PHASERphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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