UST

gene
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Also known as 2OST

Summary

UST (uronyl 2-sulfotransferase, HGNC:17223) is a protein-coding gene on chromosome 6q25.1, encoding Uronyl 2-sulfotransferase (Q9Y2C2). Sulfotransferase that utilizes 3’-phospho-5’-adenylyl sulfate (PAPS) to catalyze the transfer of a sulfo group to the 2-OH position of uronyl residues in glycosaminoglycan chains.

Uronyl 2-sulfotransferase transfers sulfate to the 2-position of uronyl residues, such as iduronyl residues in dermatan sulfate and glucuronyl residues in chondroitin sulfate (Kobayashi et al., 1999 [PubMed 10187838]).

Source: NCBI Gene 10090 — RefSeq curated summary.

At a glance

  • GWAS associations: 10
  • Clinical variants (ClinVar): 33 total
  • MANE Select transcript: NM_005715

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:17223
Approved symbolUST
Nameuronyl 2-sulfotransferase
Location6q25.1
Locus typegene with protein product
StatusApproved
Aliases2OST
Ensembl geneENSG00000111962
Ensembl biotypeprotein_coding
OMIM610752
Entrez10090

Gene structure

Transcript identifiers

Ensembl transcripts: 5 — 3 protein_coding, 2 protein_coding_CDS_not_defined

ENST00000367463, ENST00000466695, ENST00000473631, ENST00000912224, ENST00000912225

RefSeq mRNA: 1 — MANE Select: NM_005715 NM_005715

CCDS: CCDS5213

Canonical transcript exons

ENST00000367463 — 8 exons

ExonStartEnd
ENSE00000765065149019139149019236
ENSE00000765068149021324149021481
ENSE00000813604148953872148953951
ENSE00001124309148886986148887029
ENSE00001129037148941279148941434
ENSE00001444568149073833149076990
ENSE00001444569148747030148747677
ENSE00003619910148964410148964563

Expression profiles

Bgee: expression breadth ubiquitous, 261 present calls, max score 89.73.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 11.6691 / max 133.1498, expressed in 1508 samples.

FANTOM5 promoters (4 alternative TSS)

Promoter IDTPM avgSamples expressed
7044410.32031482
704430.9614726
704560.248747
704460.138637

Top tissues by expression

289 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
ponsUBERON:000098889.73gold quality
calcaneal tendonUBERON:000370189.60gold quality
adrenal tissueUBERON:001830389.52gold quality
tibiaUBERON:000097989.23gold quality
hypothalamusUBERON:000189888.32gold quality
substantia nigraUBERON:000203887.94gold quality
sural nerveUBERON:001548887.56gold quality
C1 segment of cervical spinal cordUBERON:000646987.20gold quality
thyroid glandUBERON:000204687.17gold quality
midbrainUBERON:000189187.15gold quality
left lobe of thyroid glandUBERON:000112086.75gold quality
right lobe of thyroid glandUBERON:000111986.32gold quality
spinal cordUBERON:000224086.25gold quality
skin of hipUBERON:000155486.19gold quality
synovial jointUBERON:000221785.97gold quality
dorsal motor nucleus of vagus nerveUBERON:000287085.50gold quality
substantia nigra pars compactaUBERON:000196585.22gold quality
stromal cell of endometriumCL:000225584.54gold quality
dorsal root ganglionUBERON:000004484.03gold quality
periodontal ligamentUBERON:000826683.81gold quality
body of pancreasUBERON:000115083.13gold quality
cartilage tissueUBERON:000241882.49gold quality
trigeminal ganglionUBERON:000167582.35gold quality
primordial germ cell in gonadCL:0000670 ∩ UBERON:000099182.23gold quality
choroid plexus epitheliumUBERON:000391182.11gold quality
thoracic aortaUBERON:000151581.87gold quality
ascending aortaUBERON:000149681.83gold quality
layer of synovial tissueUBERON:000761681.65gold quality
descending thoracic aortaUBERON:000234581.61gold quality
tibial nerveUBERON:000132381.03gold quality

Single-cell (SCXA)

Detected in 3 experiment(s), a significant marker in 3.

ExperimentMarker?Max mean expression
E-CURD-119yes29.81
E-HCAD-25yes15.51
E-ANND-3yes5.50

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): GATA3

miRNA regulators (miRDB)

149 targeting UST, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-5193100.0067.261744
HSA-MIR-4425100.0067.591049
HSA-MIR-5692B100.0071.322622
HSA-MIR-5692C100.0071.322622
HSA-MIR-518D-5P100.0067.51979
HSA-MIR-518E-5P100.0067.66954
HSA-MIR-518F-5P100.0067.51979
HSA-MIR-519A-5P100.0067.66954
HSA-MIR-519B-5P100.0067.66954
HSA-MIR-519C-5P100.0067.66954
HSA-MIR-520C-5P100.0067.51979
HSA-MIR-522-5P100.0067.66954
HSA-MIR-523-5P100.0067.66954
HSA-MIR-526A-5P100.0067.51979
HSA-MIR-5692A100.0074.406850
HSA-MIR-150-5P99.9966.691976
HSA-MIR-3667-3P99.9967.171636
HSA-MIR-570-3P99.9672.414910
HSA-MIR-3605-5P99.9667.12932
HSA-MIR-1250-3P99.9670.044038
HSA-MIR-1-3P99.9372.351914
HSA-MIR-20699.9372.501893
HSA-MIR-4778-3P99.9370.401818
HSA-MIR-381-3P99.9371.872854
HSA-MIR-338-5P99.9272.342951
HSA-MIR-30099.9271.762856
HSA-MIR-6768-5P99.9267.361942
HSA-MIR-61399.9171.501710
HSA-MIR-374A-5P99.9071.342923
HSA-MIR-374B-5P99.9069.982734

Literature-anchored findings (GeneRIF, showing 4)

  • 2OST transfers sulfate preferentially to the GlcA residue located in a unique sequence, -GalNAc(4SO(4))-GlcA-GalNAc(6SO(4))-. (PMID:16192264)
  • analysis of differences and similarities various residues play in the biological roles of the HS-2OST and CS-2OST enzymes (PMID:17227754)
  • Statistical analysis showed the strongest evidence for a variant located in an intron of UST associated with job-related exhaustion. (PMID:23620144)
  • Results show that overexpression of 2OST alone in the HEK293 cells did not appreciably affect heparan sulfate (HS) chain length. Also, its simultaneous overexpression with Hsepi abolished the effect of Hsepi overexpression on the HS chain lengh. (PMID:27511124)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_rerioustaENSDARG00000006044
danio_rerioustbENSDARG00000102715
mus_musculusUstENSMUSG00000047712
rattus_norvegicusUstENSRNOG00000016381
drosophila_melanogasterpipFBGN0003089

Paralogs (1): HS2ST1 (ENSG00000153936)

Protein

Protein identifiers

Uronyl 2-sulfotransferaseQ9Y2C2 (reviewed: Q9Y2C2)

Alternative names: Chondroitin sulfate 2-O-sulfotransferase

All UniProt accessions (1): Q9Y2C2

UniProt curated annotations — full annotation on UniProt →

Function. Sulfotransferase that utilizes 3’-phospho-5’-adenylyl sulfate (PAPS) to catalyze the transfer of a sulfo group to the 2-OH position of uronyl residues in glycosaminoglycan chains. Has mainly activity toward iduronyl residues in dermatan sulfate, and toward glucuronyl residues of chondroitin sulfate. Has little to no activity toward desulfated N-resulfated heparin or N-sulfoheparosan.

Subcellular location. Golgi apparatus membrane.

Tissue specificity. Widely expressed.

Similarity. Belongs to the sulfotransferase 3 family.

RefSeq proteins (1): NP_005706* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR005331SulfotransferaseFamily
IPR007734Heparan_SO4_2-O-STrfaseFamily
IPR027417P-loop_NTPaseHomologous_superfamily

Pfam: PF03567

UniProt features (27 total): mutagenesis site 14, glycosylation site 5, topological domain 2, chain 1, sequence variant 1, transmembrane region 1, region of interest 1, compositionally biased region 1, active site 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q9Y2C2-F179.640.54

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Catalytic / active sites (1): 168

Glycosylation sites (5): 173, 319, 84, 140, 155

Mutagenesis-validated functional residues (14):

PositionPhenotype
109severe reduction of sulfotransferase activity but no effect on 3’-phosphoadenylyl sulfate substrate binding; probably di
112loss of sulfotransferase activity due to disruption of binding to the substrate 3’-phosphoadenylyl sulfate.
113severe reduction of sulfotransferase activity due to disruption of binding to the substrate 3’-phosphoadenylyl sulfate.
115loss of sulfotransferase activity due to disruption of binding to the substrate 3’-phosphoadenylyl sulfate.
116severe reduction of sulfotransferase activity due to disruption of binding to the substrate 3’-phosphoadenylyl sulfate.
166no loss of sulfotransferase activity.
167some loss of sulfotransferase activity.
168abolishes sulfotransferase activity but does not affect 3’-phosphoadenylyl sulfate substrate binding.
189loss of sulfotransferase activity due to disruption of binding to the substrate 3’-phosphoadenylyl sulfate.
197severe reduction of sulfotransferase activity due to disruption of binding to the substrate 3’-phosphoadenylyl sulfate.
203complete loss of sulfotransferase activity but only moderate reduction of 3’-phosphoadenylyl sulfate substrate binding;
206complete loss of sulfotransferase activity but only moderate reduction of 3’-phosphoadenylyl sulfate substrate binding;
221no effect on sulfotransferase activity.
321severely abrogates sulfotransferase activity but does not affect 3’-phosphoadenylyl sulfate substrate binding; may be in

Function

Pathways and Gene Ontology

Reactome pathways

2 pathways

IDPathway
R-HSA-2022870CS-GAG biosynthesis
R-HSA-2022923DS-GAG biosynthesis

MSigDB gene sets: 189 (showing top): GOBP_ESTABLISHMENT_OR_MAINTENANCE_OF_CELL_POLARITY, TATTATA_MIR374, GOBP_NEUROGENESIS, GOBP_CARBOHYDRATE_DERIVATIVE_METABOLIC_PROCESS, TTGGGAG_MIR150, GOBP_CHONDROITIN_SULFATE_PROTEOGLYCAN_BIOSYNTHETIC_PROCESS, GOBP_ESTABLISHMENT_OF_CELL_POLARITY, chr6q25, GOBP_REGULATION_OF_CELL_PROJECTION_ORGANIZATION, BLALOCK_ALZHEIMERS_DISEASE_UP, GOBP_CARBOHYDRATE_DERIVATIVE_BIOSYNTHETIC_PROCESS, DACOSTA_UV_RESPONSE_VIA_ERCC3_TTD_DN, TAKEDA_TARGETS_OF_NUP98_HOXA9_FUSION_10D_UP, ACATTCC_MIR1_MIR206, AACTTT_UNKNOWN

GO Biological Process (4): establishment of cell polarity (GO:0030010), chondroitin sulfate proteoglycan biosynthetic process (GO:0050650), dermatan sulfate proteoglycan biosynthetic process (GO:0050651), regulation of axonogenesis (GO:0050770)

GO Molecular Function (5): sulfotransferase activity (GO:0008146), chondroitin 2-sulfotransferase activity (GO:0034482), 3’-phosphoadenosine 5’-phosphosulfate binding (GO:0050656), dermatan 2-sulfotransferase activity (GO:0102142), transferase activity (GO:0016740)

GO Cellular Component (3): Golgi membrane (GO:0000139), membrane (GO:0016020), Golgi apparatus (GO:0005794)

Reactome top-level categories

Rollup of top-1 pathways:

CategoryPathways
Chondroitin sulfate/dermatan sulfate metabolism2

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
proteoglycan biosynthetic process2
protein O-linked glycosylation via xylose2
establishment or maintenance of cell polarity1
chondroitin sulfate proteoglycan metabolic process1
dermatan sulfate proteoglycan metabolic process1
axonogenesis1
regulation of neuron projection development1
regulation of anatomical structure morphogenesis1
transferase activity, transferring sulphur-containing groups1
chondroitin sulfotransferase activity1
adenyl ribonucleotide binding1
anion binding1
sulfur compound binding1
dermatan sulfotransferase activity1
catalytic activity1
Golgi apparatus1
bounding membrane of organelle1
cellular anatomical structure1
cytoplasm1
endomembrane system1
intracellular membrane-bounded organelle1

Protein interactions and networks

STRING

334 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
USTHS3ST1O14792791
USTNDST2P52849669
USTNDST1P52848668
USTDSEQ9UL01580
USTEXT1Q16394571
USTGLCEO94923564
USTHS3ST3B1Q9Y662555
USTEXT2Q93063548
USTNDST3O95803544
USTHS3ST4Q9Y661532
USTHS3ST5Q8IZT8526
USTHS3ST2Q9Y278502
USTHS3ST3A1Q9Y663501
USTCHST12Q9NRB3497
USTEXTL3O43909486

IntAct

22 interactions, top by confidence:

ABTypeScore
USTGOLIM4psi-mi:“MI:0914”(association)0.530
MRAP2GOLIM4psi-mi:“MI:0914”(association)0.530
CLGNNPC1psi-mi:“MI:0914”(association)0.530
MRAP2PODXLpsi-mi:“MI:0914”(association)0.530
USTCANXpsi-mi:“MI:0914”(association)0.530
Dlg4USTpsi-mi:“MI:0407”(direct interaction)0.440
USTPCYOX1psi-mi:“MI:0915”(physical association)0.400
USTADRB2psi-mi:“MI:0915”(physical association)0.370
CUL3PXDNLpsi-mi:“MI:0914”(association)0.350
MRAP2GOSR1psi-mi:“MI:0914”(association)0.350
DYRK1ATEX13Dpsi-mi:“MI:0914”(association)0.350
EFNA4NBASpsi-mi:“MI:0914”(association)0.350
ST14LIPT2psi-mi:“MI:0914”(association)0.350
PIGNGPR89Apsi-mi:“MI:0914”(association)0.350
TMEM59GPR89Apsi-mi:“MI:0914”(association)0.350
SCARA5COLGALT2psi-mi:“MI:0914”(association)0.350
USTNMUpsi-mi:“MI:0914”(association)0.350
SLC27A6NBASpsi-mi:“MI:0914”(association)0.350
SLC30A7ESYT2psi-mi:“MI:0914”(association)0.350
SLC49A4AP3B1psi-mi:“MI:0914”(association)0.350
MYCUSTpsi-mi:“MI:0915”(physical association)0.000

BioGRID (57): UST (Affinity Capture-MS), SLC27A6 (Affinity Capture-MS), INHBE (Affinity Capture-MS), PPT2 (Affinity Capture-MS), CANX (Affinity Capture-MS), DCAKD (Affinity Capture-MS), PON2 (Affinity Capture-MS), GLG1 (Affinity Capture-MS), GOLIM4 (Affinity Capture-MS), XYLT2 (Affinity Capture-MS), MAN1A1 (Affinity Capture-MS), JAG2 (Affinity Capture-MS), OCIAD1 (Affinity Capture-MS), LDLR (Affinity Capture-MS), IMPAD1 (Affinity Capture-MS)

ESM2 similar proteins: A0A8C2LVE3, A2BGL3, F4HXW9, O08889, O17645, O43909, O43916, O93336, O93403, O95461, P25722, P69478, P79948, Q0IIY2, Q2TBF2, Q5NDE4, Q5NDE5, Q5NDE6, Q5NDE7, Q5NDE8, Q5NVB3, Q5R621, Q5RJQ0, Q5XHM7, Q66PG1, Q66PG2, Q66PG3, Q6DBY9, Q6NVP8, Q6P9A2, Q6PA90, Q76EC5, Q76KB1, Q7LFX5, Q7LGA3, Q7LGC8, Q7T3S3, Q800H9, Q8BUB6, Q8CHI9

Diamond homologs: A0A8C2LVE3, O08889, O17645, O93336, P25722, Q5R621, Q76KB1, Q7LGA3, Q86BJ3, Q8BUB6, Q8R3H7, Q9Y2C2

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

33 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance29
Likely benign2
Benign1

Top pathogenic / likely-pathogenic (0)

SpliceAI

2912 predictions. Top by Δscore:

VariantEffectΔscore
6:148747675:TGGGT:Tdonor_loss1.0000
6:148747676:GG:Gdonor_gain1.0000
6:148747676:GGGTA:Gdonor_loss1.0000
6:148747677:GG:Gdonor_gain1.0000
6:148747677:GGTA:Gdonor_loss1.0000
6:148747678:G:Cdonor_loss1.0000
6:148747679:T:Gdonor_loss1.0000
6:148831297:G:GTdonor_gain1.0000
6:148886980:TTCTA:Tacceptor_loss1.0000
6:148886981:TCTAG:Tacceptor_loss1.0000
6:148886982:CTAGG:Cacceptor_loss1.0000
6:148886983:TAGG:Tacceptor_loss1.0000
6:148886984:A:AGacceptor_gain1.0000
6:148886984:A:Cacceptor_loss1.0000
6:148886984:AG:Aacceptor_gain1.0000
6:148886985:G:GGacceptor_gain1.0000
6:148886985:GG:Gacceptor_gain1.0000
6:148887028:AGGTA:Adonor_loss1.0000
6:148887030:GTAA:Gdonor_loss1.0000
6:148887031:T:Gdonor_loss1.0000
6:148941274:CCCA:Cacceptor_loss1.0000
6:148941275:CCAG:Cacceptor_loss1.0000
6:148941276:CAGG:Cacceptor_loss1.0000
6:148941277:A:Tacceptor_loss1.0000
6:148941278:G:Aacceptor_loss1.0000
6:148941431:ACAA:Adonor_gain1.0000
6:148941432:CAA:Cdonor_gain1.0000
6:148941432:CAAGT:Cdonor_loss1.0000
6:148941433:AA:Adonor_gain1.0000
6:148941433:AAG:Adonor_loss1.0000

AlphaMissense

2676 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
6:148941306:T:GY107D1.000
6:148941311:C:AN108K1.000
6:148941311:C:GN108K1.000
6:148941313:G:CR109T1.000
6:148941313:G:TR109M1.000
6:148941314:G:CR109S1.000
6:148941314:G:TR109S1.000
6:148941318:G:CG111R1.000
6:148941318:G:TG111C1.000
6:148941319:G:AG111D1.000
6:148941319:G:TG111V1.000
6:148941321:A:CK112Q1.000
6:148941321:A:GK112E1.000
6:148941322:A:CK112T1.000
6:148941322:A:TK112M1.000
6:148941323:G:CK112N1.000
6:148941323:G:TK112N1.000
6:148941324:T:CC113R1.000
6:148941325:G:AC113Y1.000
6:148941325:G:TC113F1.000
6:148941326:T:GC113W1.000
6:148941327:G:TG114W1.000
6:148941328:G:AG114E1.000
6:148941330:A:CS115R1.000
6:148941331:G:TS115I1.000
6:148941332:C:AS115R1.000
6:148941332:C:GS115R1.000
6:148941334:G:CR116P1.000
6:148941433:A:CQ149P1.000
6:148953879:T:CL152P1.000

dbSNP variants (sampled 300 via entrez): RS1000005208 (6:148818007 C>T), RS1000033127 (6:149046740 G>A), RS1000056751 (6:148774971 T>C), RS1000061724 (6:148863317 G>A), RS1000078274 (6:149065234 G>A,T), RS1000085951 (6:148768996 G>A), RS1000119488 (6:148927106 A>G), RS1000119707 (6:148996651 A>G), RS1000119795 (6:148913479 A>C,G), RS1000148692 (6:148946202 A>G), RS1000152056 (6:148767294 A>C), RS1000170331 (6:148749701 A>G), RS1000170508 (6:148996457 G>T), RS1000181649 (6:149011513 G>T), RS1000186725 (6:148843844 T>C)

Disease associations

OMIM: gene MIM:610752 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

10 associations (top):

StudyTraitp-value
GCST000643_4Response to antidepressants9.000000e-06
GCST000643_8Response to antidepressants4.000000e-08
GCST001983_1Job-related exhaustion7.000000e-07
GCST002681_5Post-traumatic stress disorder2.000000e-06
GCST006061_208Atrial fibrillation8.000000e-17
GCST006061_209Atrial fibrillation3.000000e-17
GCST006111_2Diastolic blood pressure x sodium interaction (2df test)7.000000e-09
GCST006112_1Diastolic blood pressure x sodium interaction (1df test)3.000000e-09
GCST006414_120Atrial fibrillation1.000000e-24
GCST006585_2763Blood protein levels1.000000e-08

EFO canonical traits (2, from GWAS)

EFO IDTrait name
EFO:0006336diastolic blood pressure
EFO:0009282sodium measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

PharmGKB clinical annotations

1 annotations.

VariantTypeLevelDrugsPhenotypes
rs2500535Efficacy3nortriptylineMajor Depressive Disorder

PharmGKB variants

1 variants.

VariantGenesLevelScore#Clin annotsDrugs
rs2500535UST30.001nortriptyline

CTD chemical–gene interactions

39 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
Valproic Acidincreases expression, increases methylation, decreases expression4
bisphenol Adecreases methylation, increases expression2
sodium arseniteaffects splicing, decreases expression, increases expression2
Acetaminophenincreases expression2
Aflatoxin B1affects methylation, decreases expression2
aristolochic acid Idecreases expression1
triphenyl phosphateaffects expression1
tris(1,3-dichloro-2-propyl)phosphateincreases expression1
2,3-bis(3’-hydroxybenzyl)butyrolactoneaffects cotreatment, decreases expression1
aflatoxin B2decreases methylation1
S-(1,2-dichlorovinyl)cysteineaffects response to substance, increases expression, decreases expression1
diallyl trisulfideincreases expression1
perfluorooctane sulfonic acidincreases expression1
ICG 001increases expression1
bisphenol Sdecreases methylation1
Resveratrolincreases expression1
Temozolomidedecreases expression1
Sunitinibincreases expression1
Panobinostataffects expression, affects cotreatment1
Air Pollutantsdecreases expression, increases abundance1
Calcitriolincreases expression1
Carbamazepineaffects expression1
Cisplatinaffects cotreatment, affects expression1
Coumestrolaffects cotreatment, decreases expression1
Doxorubicindecreases expression1
Estradiolaffects cotreatment, decreases expression1
Ethyl Methanesulfonatedecreases expression1
Formaldehydedecreases expression1
Lipopolysaccharidesincreases expression, affects response to substance1
Methyl Methanesulfonatedecreases expression1

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.