CATH Classification

Domain Context

CATH Clusters

Superfamily P-loop containing nucleotide triphosphate hydrolases
Functional Family Sulfotransferase

Enzyme Information

2.8.2.23
[Heparan sulfate]-glucosamine 3-sulfotransferase 1.
based on mapping to UniProt O35310
3'-phosphoadenylyl sulfate + [heparan sulfate]-glucosamine = adenosine 3',5'-bisphosphate + [heparan sulfate]-glucosamine 3-sulfate.
-!- This enzyme differs from EC 2.8.2.29 and EC 2.8.2.30 by being the most selective for a precursor of the antithrombin-binding site. -!- It has a minimal acceptor sequence of: -> GlcNAc6S->GlcA-> GlcN2S*+-6S->IdoA2S->GlcN2S->. -!- It can also modify other precursor sequences within heparan sulfate but this action does not create functional antithrombin-binding sites. -!- These precursors are variants of the consensus sequence: -> Glc(N2S>NAc)+-6S->GlcA->GlcN2S*+-6S->GlcA>IdoA+-2S-> Glc(N2S/NAc)+-6S->. -!- If the heparan sulfate substrate lacks 2-O-sulfation of GlcA residues, then enzyme specificity is expanded to modify selected glucosamine residues preceded by IdoA as well as GlcA.

UniProtKB Entries (1)

O35310
HS3S1_MOUSE
Mus musculus
Heparan sulfate glucosamine 3-O-sulfotransferase 1

PDB Structure

PDB 3UAN
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Dissecting the substrate recognition of 3-O-sulfotransferase for the biosynthesis of anticoagulant heparin.
Moon, A.F., Xu, Y., Woody, S.M., Krahn, J.M., Linhardt, R.J., Liu, J., Pedersen, L.C.
Proc.Natl.Acad.Sci.USA