Protein: Carbohydrate sulfotransferase 10 (EC 2.8.2.-) (HNK-1 sulfotransferase) (HNK-1ST) (HNK1ST) (HuHNK-1ST) (O43529)
Organism: Homo sapiens (Human)
Function: Catalyzes the transfer of sulfate from 3'-phosphoadenylyl sulfate (PAPS) to position 3 of terminal glucuronic acid of both protein- and lipid-linked oligosaccharides. Participates in biosynthesis of HNK-1 carbohydrate structure 3-O-sulfo-beta-D-GlcA-(1->3)-beta-D-Gal-(1->4)-D-GlcNAc-R, a sulfated glucuronyl-lactosaminyl residue carried by many neural recognition molecules, which is involved in cell interactions during ontogenetic development and in synaptic plasticity in the adult. May be indirectly involved in synapse plasticity of the hippocampus, via its role in HNK-1 biosynthesis. Sulfates terminal glucuronyl residue of the laminin globular (LG)-domain binding epitope on DAG1/alpha-dystroglycan and prevents further polymerization by LARGE1 glycosyltransferase. Likely defines the chain length of LG epitope, confering binding specificity to extracellular matrix components. Plays a role in down-regulating the steroid hormones. Sulfates glucuronidated estrogens and androgens with an impact in hormone cycle and fertility. Has a preference for glucuronyl moiety at the 3-hydroxyl group of a sterol ring rather than the 17-hydroxyl group, showing high catalytic efficiency for 17beta-estradiol 3-O-(beta-D-glucuronate) and dehydroepiandrosterone 3-O-(beta-D-glucuronate) hormones.
Subcellular location: Golgi apparatus membrane {ECO:0000250|UniProtKB:O54702}; Single-pass type II membrane protein {ECO:0000255}.
InterPro domains:
- IPR005331: Sulfotransferase (family) [112-349]
- IPR018011: Carbohydrate sulfotransferase 8-10 (family) [49-355]
Sequence:
MHHQWLLLAACFWVIFMFMVASKFITLTFKDPDVYSAKQEFLFLTTMPEVRKLPEEKHIPEELKPTGKELPDSQLVQPLVYMERLELIRNVCRDDALKNLSHTPVSKFVLDRIFVCDKHKILFCQTPKVGNTQWKKVLIVLNGAFSSIEEIPENVVHDHEKNGLPRLSSFSDAEIQKRLKTYFKFFIVRDPFERLISAFKDKFVHNPRFEPWYRHEIAPGIIRKYRRNRTETRGIQFEDFVRYLGDPNHRWLDLQFGDHIIHWVTYVELCAPCEIMYSVIGHHETLEDDAPYILKEAGIDHLVSYPTIPPGITVYNRTKVEHYFLGISKRDIRRLYARFEGDFKLFGYQKPDFLLN
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0003824 (catalytic activity), GO:0016740 (transferase activity), GO:0016782 (transferase activity, transferring sulphur-containing groups), GO:0008146 (sulfotransferase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0009058 (biosynthetic process), GO:0044237 (cellular metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0071704 (organic substance metabolic process), GO:0044238 (primary metabolic process), GO:1901564 (organonitrogen compound metabolic process), GO:1901576 (organic substance biosynthetic process), GO:0019538 (protein metabolic process), GO:0044249 (cellular biosynthetic process), GO:0044260 (cellular macromolecule metabolic process), GO:0006790 (sulfur compound metabolic process), GO:0043170 (macromolecule metabolic process), GO:1901135 (carbohydrate derivative metabolic process), GO:1901566 (organonitrogen compound biosynthetic process), GO:0009059 (macromolecule biosynthetic process), GO:0030204 (chondroitin sulfate metabolic process), GO:0009100 (glycoprotein metabolic process), GO:0044272 (sulfur compound biosynthetic process), GO:0034645 (cellular macromolecule biosynthetic process), GO:1901137 (carbohydrate derivative biosynthetic process), GO:0006022 (aminoglycan metabolic process), GO:0006029 (proteoglycan metabolic process), GO:0030203 (glycosaminoglycan metabolic process), GO:0009101 (glycoprotein biosynthetic process), GO:0030206 (chondroitin sulfate biosynthetic process), GO:0006023 (aminoglycan biosynthetic process), GO:0050654 (chondroitin sulfate proteoglycan metabolic process), GO:0006024 (glycosaminoglycan biosynthetic process), GO:1903510 (mucopolysaccharide metabolic process), GO:0030166 (proteoglycan biosynthetic process), GO:0050650 (chondroitin sulfate proteoglycan biosynthetic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0005737 (cytoplasm), GO:0016020 (membrane), GO:0012505 (endomembrane system), GO:0031090 (organelle membrane), GO:0005794 (Golgi apparatus), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0098588 (bounding membrane of organelle), GO:0000139 (Golgi membrane), GO:0043231 (intracellular membrane-bounded organelle)