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 O14792
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)

O14792
HS3S1_HUMAN
Homo sapiens
Heparan sulfate glucosamine 3-O-sulfotransferase 1

PDB Structure

PDB 1ZRH
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of Human heparan sulfate glucosamine 3-O-sulfotransferase 1 in complex with PAP
Dong, A., Dombrovski, L., Loppnau, P., Sundstrom, M., Arrowsmith, C.H., Edwards, A.M., Bochkarev, A., Plotnikov, A.N.
To be Published