3F5F

Crystal structure of heparan sulfate 2-O-sulfotransferase from gallus gallus as a maltose binding protein fusion.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Redirecting the substrate specificity of heparan sulfate 2-O-sulfotransferase by structurally guided mutagenesis.

Bethea, H.N.Xu, D.Liu, J.Pedersen, L.C.

(2008) Proc.Natl.Acad.Sci.USA 105: 18724-18729

  • DOI: 10.1073/pnas.0806975105

  • PubMed Abstract: 
  • Heparan sulfate (HS) is a polysaccharide involved in essential physiological functions from regulating cell growth to blood coagulation. HS biosynthesis involves multiple specialized sulfotransferases such as 2-O-sulfotransferase (2OST) that transfer ...

    Heparan sulfate (HS) is a polysaccharide involved in essential physiological functions from regulating cell growth to blood coagulation. HS biosynthesis involves multiple specialized sulfotransferases such as 2-O-sulfotransferase (2OST) that transfers the sulfo group to the 2-OH position of iduronic acid (IdoA) or glucuronic acid (GlcA) within HS. Here, we report the homotrimeric crystal structure of 2OST from chicken, in complex with 3'-phosphoadenosine 5'-phosphate. Structural based mutational analysis has identified amino acid residues that are responsible for substrate specificity. The mutant R189A only transferred sulfates to GlcA moieties within the polysaccharide whereas mutants Y94A and H106A preferentially transferred sulfates to IdoA units. Our results demonstrate the feasibility for manipulating the substrate specificity of 2OST to synthesize HS with unique sulfation patterns. This work will aid the development of an enzymatic approach to synthesize heparin-based therapeutics.


    Organizational Affiliation

    Division of Medicinal Chemistry and Natural Products, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Maltose-binding periplasmic protein, Heparan sulfate 2-O-sulfotransferase 1
A
658Gallus gallusEscherichia coli (strain K12)
This entity is chimeric
Mutation(s): 1 
Gene Names: HS2ST1 (HS2ST), malE
EC: 2.8.2.-
Find proteins for Q76KB1 (Gallus gallus)
Go to Gene View: HS2ST1
Go to UniProtKB:  Q76KB1
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEX9
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
A3P
Query on A3P

Download SDF File 
Download CCD File 
A
ADENOSINE-3'-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
WHTCPDAXWFLDIH-KQYNXXCUSA-N
 Ligand Interaction
GLC
Query on GLC

Download SDF File 
Download CCD File 
A
ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.200 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 152.647α = 90.00
b = 152.647β = 90.00
c = 85.686γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
HKL-2000data reduction
StructureStudiodata collection
CNSrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-08-23
    Type: Refinement description, Source and taxonomy