CSGALNACT2
gene geneOn this page
Also known as GALNACT2MGC40204PRO0082GALNACT-2
Summary
CSGALNACT2 (chondroitin sulfate N-acetylgalactosaminyltransferase 2, HGNC:24292) is a protein-coding gene on chromosome 10q11.21, encoding Chondroitin sulfate N-acetylgalactosaminyltransferase 2 (Q8N6G5). Transfers 1,4-N-acetylgalactosamine (GalNAc) from UDP-GalNAc to the non-reducing end of glucuronic acid (GlcUA).
This gene encodes a member of the chondroitin N-acetylgalactosaminyltransferase family. The encoded protein is involved in elongation during chondroitin sulfate synthesis. Alternative splicing of this gene results in multiple transcript variants. Two related pseudogenes have been identified on chromosome X.
Source: NCBI Gene 55454 — RefSeq curated summary.
At a glance
- GWAS associations: 7
- Clinical variants (ClinVar): 91 total
- GTEx eGene: eQTL in 49 tissues, sQTL in 36 (q < 0.05)
- Constraint (gnomAD): pLI 0.00 (LoF-tolerant), LOEUF 0.89 (unconstrained)
- MANE Select transcript:
NM_018590 - Notable: 91 clinical variants but no curated precision-oncology (CIViC) evidence yet
Identifiers
Gene identifiers
| Field | Value |
|---|---|
| HGNC ID | HGNC:24292 |
| Approved symbol | CSGALNACT2 |
| Name | chondroitin sulfate N-acetylgalactosaminyltransferase 2 |
| Location | 10q11.21 |
| Locus type | gene with protein product |
| Status | Approved |
| Aliases | GALNACT2, MGC40204, PRO0082, GALNACT-2 |
| Ensembl gene | ENSG00000169826 |
| Ensembl biotype | protein_coding |
| OMIM | 616616 |
| Entrez | 55454 |
Gene structure
Transcript identifiers
Ensembl transcripts: 27 — 15 protein_coding, 12 nonsense_mediated_decay
MANE Select: ENST00000374466
Transcript support level (Ensembl TSL; 1 = fully mRNA-supported): TSL 1: 1
ENST00000374466, ENST00000908294, ENST00000908295, ENST00000908296, ENST00000908297, ENST00000943043, ENST00000943044, ENST00000943045, ENST00000943046, ENST00000990821, ENST00000990822, ENST00000990823, ENST00000990824, ENST00000990825, ENST00001038860, ENST00001038862, ENST00001038864, ENST00001038865, ENST00001038866, ENST00001038867, ENST00001038868, ENST00001038869, ENST00001038870, ENST00001088041, ENST00001088042, ENST00001123397, ENST00001143031
RefSeq mRNA: 3 — MANE Select: NM_018590
NM_001319654, NM_001319656, NM_018590
CCDS: CCDS7201
Canonical transcript exons
ENST00000374466 — 8 exons
| Exon | Start | End |
|---|---|---|
| ENSE00001155834 | 43175951 | 43176032 |
| ENSE00001164704 | 43167004 | 43167098 |
| ENSE00001194769 | 43160494 | 43160595 |
| ENSE00001194776 | 43158715 | 43158931 |
| ENSE00001194781 | 43154897 | 43155810 |
| ENSE00001194788 | 43138445 | 43138567 |
| ENSE00001194801 | 43163866 | 43164044 |
| ENSE00001463591 | 43183250 | 43185302 |
Expression profiles
Bgee: expression breadth ubiquitous, 278 present calls, max score 96.38.
FANTOM5 (CAGE): breadth ubiquitous, TPM avg 24.7063 / max 401.6199, expressed in 1771 samples.
Highest expression (Bgee): secondary oocyte, visceral pleura, tibia, bone marrow, monocyte.
Genetic regulation across tissues (GTEx eQTL / sQTL)
CSGALNACT2 is an eGene in GTEx v10 — its expression is genetically regulated (eQTL) in 49 tissues and its splicing (sQTL) in 36 (q < 0.05). Strongest associations first; slope = normalized effect of the lead variant’s alternative allele.
showing 20 of 85 significant tissue × QTL associations:
| Tissue | QTL | q-value | Slope | Lead variant |
|---|---|---|---|---|
| Nerve Tibial | eqtl | 5.2e-167 | -1.13 | 10:43162363:T:G |
| Thyroid | eqtl | 6.6e-127 | -0.83 | 10:43162363:T:G |
| Testis | eqtl | 2.6e-93 | -0.78 | 10:43162363:T:G |
| Nerve Tibial | sqtl | 5.3e-88 | +1.21 | 10:43205531:C:G |
| Esophagus Muscularis | eqtl | 3.5e-74 | -0.59 | 10:43170302:A:G |
| Breast Mammary Tissue | eqtl | 9.8e-58 | -0.50 | 10:43125875:C:G |
| Skin Not Sun Exposed Suprapubic | eqtl | 1.2e-50 | -0.38 | 10:43170302:A:G |
| Heart Atrial Appendage | eqtl | 3.4e-50 | -0.53 | 10:43162363:T:G |
| Esophagus Gastroesophageal Junction | eqtl | 5.4e-50 | -0.67 | 10:43171319:G:T |
| Adipose Subcutaneous | eqtl | 9.1e-50 | +0.43 | 10:43200036:T:G |
| Colon Sigmoid | eqtl | 5.8e-49 | +0.59 | 10:43194943:G:A |
| Colon Transverse | eqtl | 1.4e-46 | +0.35 | 10:43194943:G:A |
| Pituitary | eqtl | 5.8e-46 | -0.82 | 10:43171319:G:T |
| Adipose Visceral Omentum | eqtl | 1.8e-45 | +0.42 | 10:43200036:T:G |
| Brain Cortex | eqtl | 4.3e-44 | -0.83 | 10:43162363:T:G |
| Skin Sun Exposed Lower leg | eqtl | 2.3e-42 | -0.32 | 10:43170302:A:G |
| Brain Caudate basal ganglia | eqtl | 6.0e-42 | -0.79 | 10:43162363:T:G |
| Brain Nucleus accumbens basal ganglia | eqtl | 1.8e-40 | -0.84 | 10:43162363:T:G |
| Artery Tibial | sqtl | 1.7e-39 | -0.87 | 10:43162363:T:G |
| Artery Tibial | eqtl | 3.3e-39 | -0.38 | 10:43170302:A:G |
FANTOM5 promoters
5 alternative TSS:
| Promoter ID | TPM avg | Samples expressed |
|---|---|---|
| 104741 | 15.4713 | 1748 |
| 104742 | 5.4030 | 1526 |
| 104743 | 1.8946 | 839 |
| 104745 | 1.5221 | 564 |
| 104744 | 0.4154 | 205 |
Top tissues by expression
showing 100 of 286 tissues by Bgee expression score (0-100, higher = more expressed):
| Tissue | Anatomy ID | Expression score | Quality |
|---|---|---|---|
| secondary oocyte | CL:0000655 | 96.38 | gold quality |
| visceral pleura | UBERON:0002401 | 95.98 | gold quality |
| tibia | UBERON:0000979 | 95.79 | gold quality |
| bone marrow | UBERON:0002371 | 95.66 | gold quality |
| monocyte | CL:0000576 | 95.41 | gold quality |
| mononuclear cell | CL:0000842 | 95.39 | gold quality |
| leukocyte | CL:0000738 | 95.02 | gold quality |
| endothelial cell | CL:0000115 | 94.52 | gold quality |
| cartilage tissue | UBERON:0002418 | 94.47 | gold quality |
| superficial temporal artery | UBERON:0001614 | 94.16 | gold quality |
| germinal epithelium of ovary | UBERON:0001304 | 93.88 | gold quality |
| synovial joint | UBERON:0002217 | 93.78 | gold quality |
| bone marrow cell | CL:0002092 | 93.56 | gold quality |
| pleura | UBERON:0000977 | 93.47 | gold quality |
| trabecular bone tissue | UBERON:0002483 | 93.05 | gold quality |
| lower lobe of lung | UBERON:0008949 | 93.05 | gold quality |
| parietal pleura | UBERON:0002400 | 92.98 | gold quality |
| oocyte | CL:0000023 | 92.65 | gold quality |
| cortical plate | UBERON:0005343 | 92.40 | gold quality |
| amniotic fluid | UBERON:0000173 | 92.37 | gold quality |
| blood | UBERON:0000178 | 92.26 | gold quality |
| periodontal ligament | UBERON:0008266 | 92.01 | gold quality |
| calcaneal tendon | UBERON:0003701 | 91.71 | gold quality |
| saphenous vein | UBERON:0007318 | 91.60 | gold quality |
| mucosa of paranasal sinus | UBERON:0005030 | 90.95 | gold quality |
| right lung | UBERON:0002167 | 90.80 | gold quality |
| choroid plexus epithelium | UBERON:0003911 | 90.51 | gold quality |
| gall bladder | UBERON:0002110 | 90.35 | gold quality |
| blood vessel layer | UBERON:0004797 | 90.17 | gold quality |
| mammary duct | UBERON:0001765 | 89.98 | gold quality |
| ganglionic eminence | UBERON:0004023 | 89.42 | gold quality |
| Brodmann (1909) area 23 | UBERON:0013554 | 89.31 | gold quality |
| skin of hip | UBERON:0001554 | 89.30 | gold quality |
| urethra | UBERON:0000057 | 89.25 | gold quality |
| vermiform appendix | UBERON:0001154 | 89.21 | gold quality |
| epithelium of mammary gland | UBERON:0003244 | 89.20 | gold quality |
| epithelium of nasopharynx | UBERON:0001951 | 89.16 | gold quality |
| granulocyte | CL:0000094 | 89.00 | gold quality |
| dorsal root ganglion | UBERON:0000044 | 89.00 | gold quality |
| descending thoracic aorta | UBERON:0002345 | 88.93 | gold quality |
| lung | UBERON:0002048 | 88.91 | gold quality |
| pigmented layer of retina | UBERON:0001782 | 88.90 | gold quality |
| tibial nerve | UBERON:0001323 | 88.89 | gold quality |
| tibial artery | UBERON:0007610 | 88.84 | gold quality |
| layer of synovial tissue | UBERON:0007616 | 88.84 | gold quality |
| popliteal artery | UBERON:0002250 | 88.83 | gold quality |
| tendon | UBERON:0000043 | 88.82 | gold quality |
| upper lobe of lung | UBERON:0008948 | 88.75 | gold quality |
| corpus callosum | UBERON:0002336 | 88.74 | gold quality |
| aorta | UBERON:0000947 | 88.59 | gold quality |
| caecum | UBERON:0001153 | 88.57 | gold quality |
| lymph node | UBERON:0000029 | 88.48 | gold quality |
| trigeminal ganglion | UBERON:0001675 | 88.48 | gold quality |
| upper lobe of left lung | UBERON:0008952 | 88.44 | gold quality |
| subthalamic nucleus | UBERON:0001906 | 88.41 | gold quality |
| penis | UBERON:0000989 | 88.33 | gold quality |
| cauda epididymis | UBERON:0004360 | 88.24 | gold quality |
| thoracic aorta | UBERON:0001515 | 88.22 | gold quality |
| ascending aorta | UBERON:0001496 | 88.16 | gold quality |
| upper leg skin | UBERON:0004262 | 87.99 | gold quality |
| left coronary artery | UBERON:0001626 | 87.89 | gold quality |
| spleen | UBERON:0002106 | 87.88 | gold quality |
| coronary artery | UBERON:0001621 | 87.79 | gold quality |
| myometrium | UBERON:0001296 | 87.74 | gold quality |
| stromal cell of endometrium | CL:0002255 | 87.61 | gold quality |
| pericardium | UBERON:0002407 | 87.44 | gold quality |
| smooth muscle tissue | UBERON:0001135 | 87.37 | gold quality |
| subcutaneous adipose tissue | UBERON:0002190 | 87.35 | gold quality |
| islet of Langerhans | UBERON:0000006 | 87.33 | gold quality |
| endometrium | UBERON:0001295 | 87.26 | gold quality |
| left uterine tube | UBERON:0001303 | 87.26 | gold quality |
| connective tissue | UBERON:0002384 | 87.09 | gold quality |
| substantia nigra pars reticulata | UBERON:0001966 | 87.05 | gold quality |
| mammary gland | UBERON:0001911 | 87.03 | gold quality |
| urinary bladder | UBERON:0001255 | 87.00 | gold quality |
| thoracic mammary gland | UBERON:0005200 | 86.95 | gold quality |
| adipose tissue | UBERON:0001013 | 86.87 | gold quality |
| lower esophagus muscularis layer | UBERON:0035833 | 86.84 | gold quality |
| right coronary artery | UBERON:0001625 | 86.82 | gold quality |
| lower esophagus | UBERON:0013473 | 86.77 | gold quality |
| ovary | UBERON:0000992 | 86.59 | gold quality |
| mucosa of stomach | UBERON:0001199 | 86.57 | gold quality |
| pylorus | UBERON:0001166 | 86.46 | gold quality |
| adipose tissue of abdominal region | UBERON:0007808 | 86.40 | gold quality |
| omental fat pad | UBERON:0010414 | 86.39 | gold quality |
| peritoneum | UBERON:0002358 | 86.38 | gold quality |
| esophagogastric junction muscularis propria | UBERON:0035841 | 86.38 | gold quality |
| left ovary | UBERON:0002119 | 86.28 | gold quality |
| uterus | UBERON:0000995 | 86.16 | gold quality |
| vena cava | UBERON:0004087 | 86.10 | gold quality |
| biceps brachii | UBERON:0001507 | 86.03 | gold quality |
| right ovary | UBERON:0002118 | 85.89 | gold quality |
| colonic epithelium | UBERON:0000397 | 85.85 | gold quality |
| ventricular zone | UBERON:0003053 | 85.72 | gold quality |
| primary visual cortex | UBERON:0002436 | 85.71 | gold quality |
| lateral globus pallidus | UBERON:0002476 | 85.70 | gold quality |
| superior vestibular nucleus | UBERON:0007227 | 85.70 | gold quality |
| body of uterus | UBERON:0009853 | 85.70 | gold quality |
| substantia nigra pars compacta | UBERON:0001965 | 85.68 | gold quality |
| spinal cord | UBERON:0002240 | 85.62 | gold quality |
Single-cell (SCXA)
Detected in 1 experiment(s), a significant marker in 1.
| Experiment | Marker? | Max mean expression |
|---|---|---|
| E-ANND-3 | yes | 17.55 |
HPA expression
RNA tissue specificity: Tissue enriched
showing 60 of 80 HPA tissues / cells by nTPM:
| Tissue / cell | Axis | nTPM | Protein (IHC) |
|---|---|---|---|
| Bone marrow | tissue | 126.5 | medium |
| Choroid plexus | tissue | 28.5 | |
| Thymus | tissue | 26.0 | |
| Spleen | tissue | 25.0 | medium |
| Placenta | tissue | 24.7 | high |
| Gallbladder | tissue | 23.7 | high |
| Appendix | tissue | 22.8 | high |
| Urinary bladder | tissue | 22.5 | high |
| Lymph node | tissue | 21.1 | high |
| Nucleus accumbens | tissue | 20.0 | |
| Smooth muscle | tissue | 19.4 | medium |
| Locus coeruleus | tissue | 18.6 | |
| Hippocampus | tissue | 18.5 | medium |
| Adipose tissue | tissue | 18.4 | low |
| Endometrium 1 | tissue | 18.3 | high |
| Postcentral gyrus | tissue | 18.2 | |
| Lung | tissue | 18.1 | medium |
| Tonsil | tissue | 16.3 | high |
| Tongue | tissue | 16.0 | |
| Ovary | tissue | 14.9 | low |
| Liver | tissue | 13.0 | medium |
| Cervix | tissue | 12.9 | medium |
| Prostate | tissue | 12.6 | high |
| Skeletal muscle | tissue | 12.3 | low |
| Breast | tissue | 11.3 | medium |
| Vagina | tissue | 11.3 | medium |
| Rectum | tissue | 10.9 | high |
| Pituitary gland | tissue | 10.8 | |
| Cerebellum | tissue | 10.8 | high |
| Skin 1 | tissue | 10.4 | medium |
| Seminal vesicle | tissue | 10.3 | high |
| Adrenal gland | tissue | 10.0 | high |
| Esophagus | tissue | 9.9 | medium |
| Heart muscle | tissue | 9.8 | medium |
| Stomach 1 | tissue | 9.5 | medium |
| Olfactory bulb | tissue | 9.4 | |
| Spinal cord | tissue | 9.2 | |
| Retina | tissue | 9.1 | |
| Small intestine | tissue | 9.1 | medium |
| Testis | tissue | 8.6 | high |
| Cerebral cortex | tissue | 8.6 | high |
| Motor cortex | tissue | 8.6 | |
| Substantia nigra | tissue | 8.6 | |
| Duodenum | tissue | 8.6 | medium |
| Thyroid gland | tissue | 8.5 | medium |
| Caudate putamen | tissue | 8.5 | |
| Colon | tissue | 8.4 | high |
| Corpus callosum | tissue | 8.3 | |
| Retrosplenial and cingulate cortex | tissue | 8.3 | |
| Kidney | tissue | 8.2 | high |
| Hippocampal formation | tissue | 8.2 | |
| Frontal cortex | tissue | 8.1 | |
| Somatosensory cortex | tissue | 8.1 | |
| Prefrontal cortex | tissue | 8.0 | |
| Epididymis | tissue | 8.0 | high |
| Entorhinal cortex | tissue | 8.0 | |
| Retrosplenial cortex | tissue | 8.0 | |
| Superior colliculi | tissue | 7.9 | |
| Pons | tissue | 7.8 | |
| Temporal cortex | tissue | 7.8 |
Brain sub-regions (HPA Brain Atlas): detected in 192; highest nTPM — Cerebellar cortex (33.2), Flocculonodular lobe (32.3), Area parastriata, superior (30.2), Temporal white matter (29.6), Corpus callosum, genu (white matter) (29.0).
Regulation
Is transcription factor: no
miRNA regulators (miRDB)
Targeting CSGALNACT2 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific).
showing 30 of 137 miRNAs:
| miRNA | Max score | Avg score | miRNA target_count |
|---|---|---|---|
| HSA-MIR-1277-5P | 100.00 | 73.95 | 5056 |
| HSA-MIR-5692A | 100.00 | 74.40 | 6850 |
| HSA-MIR-6833-3P | 100.00 | 70.63 | 3197 |
| HSA-MIR-4768-5P | 100.00 | 69.49 | 2861 |
| HSA-MIR-5692B | 100.00 | 71.32 | 2622 |
| HSA-MIR-5692C | 100.00 | 71.32 | 2622 |
| HSA-MIR-3163 | 100.00 | 77.23 | 8605 |
| HSA-MIR-29A-3P | 100.00 | 73.11 | 1835 |
| HSA-MIR-29B-3P | 100.00 | 73.18 | 1833 |
| HSA-MIR-29C-3P | 100.00 | 73.15 | 1833 |
| HSA-MIR-6873-3P | 100.00 | 71.42 | 2626 |
| HSA-MIR-371B-5P | 99.99 | 75.34 | 4759 |
| HSA-MIR-373-5P | 99.98 | 75.36 | 4753 |
| HSA-MIR-616-5P | 99.98 | 75.58 | 4775 |
| HSA-MIR-5696 | 99.98 | 72.36 | 4487 |
| HSA-MIR-4803 | 99.98 | 71.99 | 3117 |
| HSA-MIR-485-3P | 99.98 | 70.68 | 1585 |
| HSA-MIR-539-3P | 99.98 | 70.74 | 1616 |
| HSA-MIR-512-3P | 99.97 | 67.35 | 1049 |
| HSA-MIR-1229-3P | 99.97 | 66.49 | 906 |
| HSA-MIR-9-3P | 99.96 | 70.88 | 2068 |
| HSA-MIR-559 | 99.95 | 72.28 | 3609 |
| HSA-MIR-548AB | 99.95 | 71.31 | 3488 |
| HSA-MIR-548A-5P | 99.94 | 71.27 | 3482 |
| HSA-MIR-548AD-5P | 99.94 | 71.23 | 3502 |
| HSA-MIR-548AE-5P | 99.94 | 71.23 | 3502 |
| HSA-MIR-548AK | 99.94 | 71.24 | 3488 |
| HSA-MIR-548AM-5P | 99.94 | 71.24 | 3488 |
| HSA-MIR-548AP-5P | 99.94 | 71.14 | 3489 |
| HSA-MIR-548AQ-5P | 99.94 | 71.34 | 3426 |
Functional genomics
gnomAD constraint: pLI 4.57e-06, LOEUF 0.886, missense Z 1.93 — population loss-of-function intolerance (pLI ≥ 0.9 = LoF-intolerant; lower LOEUF = more constrained). gnomAD
Regional missense constraint (gnomAD)
ENST00000374466 splits into 2 regions with different missense tolerance; 0 are missense-constrained. Missense variants in a constrained region (low observed/expected) are more likely to be pathogenic. gnomAD
| Region (GRCh38) | Missense obs / exp | o/e | Constrained |
|---|---|---|---|
| 10:43,155,150–43,163,903 | 374 / 401.3 | 0.93 | no |
| 10:43,163,904–43,183,539 | 170 / 256.2 | 0.66 | no |
Literature-anchored findings (GeneRIF, showing 3)
- plays a role in the initiation and elongation in the synthesis of chondroitin sulfate (PMID:12446672)
- Chondroitin sulfate N-acetylgalactosaminyltransferase 2 is functionally involved in the progression of atherosclerosis both in its early and advanced stages. (PMID:30579596)
- CSGALNACT2 restricts ovarian cancer migration and invasion by modulating MAPK/ERK pathway through DUSP1. (PMID:38082211)
Cross-species orthologs
4 orthologs
| Organism | Symbol | Gene ID |
|---|---|---|
| danio_rerio | csgalnact2 | ENSDARG00000061400 |
| mus_musculus | Csgalnact2 | ENSMUSG00000042042 |
| rattus_norvegicus | Csgalnact2 | ENSRNOG00000014713 |
| drosophila_melanogaster | Csgalnact | FBGN0033500 |
Paralogs (7): CHPF2 (ENSG00000033100), CHPF (ENSG00000123989), CHSY1 (ENSG00000131873), B4GALNT3 (ENSG00000139044), CSGALNACT1 (ENSG00000147408), B4GALNT4 (ENSG00000182272), CHSY3 (ENSG00000198108)
Genomic neighbors (locus context)
Genes flanking this one on the chromosome (NCBI/Entrez gene neighborhood). Positional context only — some neighbors share regulatory elements (bidirectional promoters, antisense/overlapping transcripts), but chromosomal adjacency is not itself a functional relationship (see Interactions for that).
| Symbol | Type | Entrez |
|---|---|---|
| RASGEF1A | protein-coding | 221002 |
| LINC02633 | ncRNA | 105378270 |
| HNRNPF | protein-coding | 3185 |
| FXYD4 | protein-coding | 53828 |
| MIR5100 | ncRNA | 100847014 |
| LINC01264 | ncRNA | 104266963 |
| CSGALNACT2-DT | ncRNA | 118568825 |
| RET | protein-coding | 5979 |
Protein
Protein identifiers
Chondroitin sulfate N-acetylgalactosaminyltransferase 2 — Q8N6G5 (reviewed: Q8N6G5)
Alternative names: Chondroitin beta-1,4-N-acetylgalactosaminyltransferase 2
All UniProt accessions (4): A0A0S2Z5F5, A0A0S2Z5F9, A0A0S2Z5K4, Q8N6G5
UniProt curated annotations — full annotation on UniProt →
Function. Transfers 1,4-N-acetylgalactosamine (GalNAc) from UDP-GalNAc to the non-reducing end of glucuronic acid (GlcUA). Required for addition of the first GalNAc to the core tetrasaccharide linker and for elongation of chondroitin chains.
Subcellular location. Golgi apparatus. Golgi stack membrane.
Tissue specificity. Ubiquitous.
Similarity. Belongs to the chondroitin N-acetylgalactosaminyltransferase family.
Isoforms (2)
| UniProt ID | Names | Canonical? |
|---|---|---|
| Q8N6G5-1 | 1 | yes |
| Q8N6G5-2 | 2 |
RefSeq proteins (3): NP_001306583, NP_001306585, NP_061060* (*=MANE)
Domains & families (InterPro)
| ID | Name | Type |
|---|---|---|
| IPR008428 | Chond_GalNAc | Family |
| IPR029044 | Nucleotide-diphossugar_trans | Homologous_superfamily |
| IPR051227 | CS_glycosyltransferase | Family |
Pfam: PF05679
Enzyme classification (BRENDA)
- EC 2.4.1.174 — glucuronylgalactosylproteoglycan 4-beta-N-acetylgalactosaminyltransferase (BRENDA: 5 organisms, 22 substrates, 39 inhibitors, 0 Km, 0 kcat entries)
- EC 2.4.1.175 — glucuronosyl-N-acetylgalactosaminyl-proteoglycan 4-beta-N-acetylgalactosaminyltransferase (BRENDA: 8 organisms, 92 substrates, 7 inhibitors, 8 Km, 1 kcat entries)
Substrate kinetics (BRENDA)
4 substrates with measured Km, best-characterized 4. Km ranges are aggregated across organisms/conditions.
| Substrate | Km (mM) | Measurements |
|---|---|---|
| UDP-N-ACETYL-BETA-D-GALACTOSAMINE | 0.0059–0.05 | 3 |
| UDP-GALNAC | 0.221–9.275 | 2 |
| CHONDROITIN SULFATE CS-11 | 0.36 | 1 |
| UDP-N-ACETYL-ALPHA-D-GLUCOSAMINE | 0.0059 | 1 |
Catalyzed reactions (Rhea)
- 3-O-(beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-seryl-[protein] + UDP-N-acetyl-alpha-D-galactosamine = 3-O-(beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-seryl-[protein] + UDP + H(+) (RHEA:23464)
UniProt features (14 total): topological domain 2, splice variant 2, sequence variant 2, binding site 2, glycosylation site 2, chain 1, sequence conflict 1, transmembrane region 1, coiled-coil region 1
Structure
Predicted structure (AlphaFold)
| Model | pLDDT | Fraction very-high |
|---|---|---|
| AF-Q8N6G5-F1 | 87.16 | 0.63 |
Human Protein Atlas
Protein class: Enzymes, ENZYME proteins, Transferases, Metabolic proteins, Predicted intracellular proteins
Protein evidence: Evidence at protein level
Subcellular location (HPA, imaging): endoplasmic reticulum
Antibody reliability (HPA): IH approved · IF approved
Functional residue map
Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.
Ligand- & substrate-binding residues (2)
| Position | Role |
|---|---|
| 369 | a divalent metal cation |
| 486 | a divalent metal cation |
Glycosylation sites (2)
| Type | Positions |
|---|---|
| N-linked (glcnac…) asparagine | 41, 333 |
Function
Pathways and Gene Ontology
Reactome pathways
1 curated (TAS) of 5; 0 disease pathways. Curated-first; evidence = TAS (manually curated) vs IEA (electronic inference).
5 pathways:
| ID | Pathway | Evidence |
|---|---|---|
| R-HSA-2022870 | CS-GAG biosynthesis | curated |
| R-HSA-1793185 | Chondroitin sulfate/dermatan sulfate metabolism | — |
| R-HSA-1630316 | Glycosaminoglycan metabolism | — |
| R-HSA-1430728 | Metabolism | — |
| R-HSA-71387 | Metabolism of carbohydrates and carbohydrate derivatives | — |
MSigDB gene sets: 213 (showing top):
WAMUNYOKOLI_OVARIAN_CANCER_LMP_DN, IVANOVA_HEMATOPOIESIS_LATE_PROGENITOR, GOBP_CARBOHYDRATE_DERIVATIVE_METABOLIC_PROCESS, GOBP_CHONDROITIN_SULFATE_PROTEOGLYCAN_BIOSYNTHETIC_PROCESS, GNF2_MCL1, WANG_LMO4_TARGETS_DN, GOBP_CARBOHYDRATE_DERIVATIVE_BIOSYNTHETIC_PROCESS, BROWN_MYELOID_CELL_DEVELOPMENT_DN, NRF2_01, SENESE_HDAC1_TARGETS_UP, LIU_CMYB_TARGETS_UP, CUI_TCF21_TARGETS_2_DN, GOBP_CHONDROITIN_SULFATE_PROTEOGLYCAN_METABOLIC_PROCESS, MODULE_207, LIU_VMYB_TARGETS_UP
GO Biological Process (3): proteoglycan biosynthetic process (GO:0030166), chondroitin sulfate proteoglycan biosynthetic process (GO:0050650), dermatan sulfate proteoglycan biosynthetic process (GO:0050651)
GO Molecular Function (8): acetylgalactosaminyltransferase activity (GO:0008376), metal ion binding (GO:0046872), glucuronylgalactosylproteoglycan 4-beta-N-acetylgalactosaminyltransferase activity (GO:0047237), glucuronosyl-N-acetylgalactosaminyl-proteoglycan 4-beta-N-acetylgalactosaminyltransferase activity (GO:0047238), protein binding (GO:0005515), UDP-glycosyltransferase activity (GO:0008194), transferase activity (GO:0016740), hexosyltransferase activity (GO:0016758)
GO Cellular Component (4): Golgi membrane (GO:0000139), membrane (GO:0016020), Golgi cisterna membrane (GO:0032580), Golgi apparatus (GO:0005794)
Reactome top-level categories
4 top-level categories:
| Category | Pathways |
|---|---|
| Chondroitin sulfate/dermatan sulfate metabolism | 1 |
| Metabolism of carbohydrates and carbohydrate derivatives | 1 |
| Glycosaminoglycan metabolism | 1 |
| Metabolism | 1 |
GO top-level categories
21 GO namespaces:
| Category | Terms |
|---|---|
| proteoglycan biosynthetic process | 2 |
| protein O-linked glycosylation via xylose | 2 |
| acetylgalactosaminyltransferase activity | 2 |
| glycosyltransferase activity | 2 |
| proteoglycan metabolic process | 1 |
| glycoprotein biosynthetic process | 1 |
| chondroitin sulfate proteoglycan metabolic process | 1 |
| dermatan sulfate proteoglycan metabolic process | 1 |
| UDP-glycosyltransferase activity | 1 |
| hexosyltransferase activity | 1 |
| cation binding | 1 |
| binding | 1 |
| catalytic activity | 1 |
| Golgi apparatus | 1 |
| bounding membrane of organelle | 1 |
| cellular anatomical structure | 1 |
| organelle membrane | 1 |
| Golgi cisterna | 1 |
| cytoplasm | 1 |
| endomembrane system | 1 |
| intracellular membrane-bounded organelle | 1 |
Experimentally-supported GO annotations
GO terms backed by direct experimental evidence (ECO experimental codes) — 5 of 15 annotations. The rest are phylogenetic / computational / electronic (IEA).
5 experimentally-supported GO terms:
| GO term | NS | Evidence |
|---|---|---|
| chondroitin sulfate proteoglycan biosynthetic process | BP | direct assay |
| dermatan sulfate proteoglycan biosynthetic process | BP | direct assay |
| proteoglycan biosynthetic process | BP | direct assay |
| membrane | CC | high-throughput assay |
| acetylgalactosaminyltransferase activity | MF | direct assay |
Protein interactions and networks
STRING
showing 15 of 584 interactions by confidence (×1000):
| Protein A | Protein B | Partner UniProt | Score |
|---|---|---|---|
| CSGALNACT2 | CHST11 | Q9NPF2 | 724 |
| CSGALNACT2 | B3GAT3 | O94766 | 717 |
| CSGALNACT2 | CHST12 | Q9NRB3 | 717 |
| CSGALNACT2 | CHST7 | Q9NS84 | 700 |
| CSGALNACT2 | CHST13 | Q8NET6 | 693 |
| CSGALNACT2 | EXT2 | Q93063 | 667 |
| CSGALNACT2 | B4GALT7 | Q9UBV7 | 649 |
| CSGALNACT2 | CHST15 | Q7LFX5 | 641 |
| CSGALNACT2 | EXT1 | Q16394 | 621 |
| CSGALNACT2 | EXTL2 | Q9UBQ6 | 611 |
| CSGALNACT2 | NDST2 | P52849 | 602 |
| CSGALNACT2 | CHST14 | Q8NCH0 | 593 |
| CSGALNACT2 | EXTL3 | O43909 | 589 |
| CSGALNACT2 | DSE | Q9UL01 | 576 |
| CSGALNACT2 | CHST3 | Q7LGC8 | 567 |
IntAct
Human interaction partners of CSGALNACT2 in IntAct, one row per partner (best MIscore; records = supporting IntAct interaction records).
27 partners by confidence:
| Partner | Interaction type | MIscore | Records |
|---|---|---|---|
| SYNE4 | physical association | 0.670 | 3 |
| ARL13B | physical association | 0.560 | 3 |
| ATP1B4 | physical association | 0.560 | 3 |
| BSND | physical association | 0.560 | 3 |
| CLDN2 | physical association | 0.560 | 3 |
| CREB3L1 | physical association | 0.560 | 3 |
| CYB5R3 | physical association | 0.560 | 3 |
| FCGR2A | physical association | 0.560 | 3 |
| GPR152 | physical association | 0.560 | 3 |
| GTT3 | physical association | 0.560 | 3 |
| HSD17B11 | physical association | 0.560 | 3 |
| MFSD14B | physical association | 0.560 | 3 |
| MUC1 | physical association | 0.560 | 3 |
| RETREG3 | physical association | 0.560 | 3 |
| SLC35E3 | physical association | 0.560 | 3 |
| SSMEM1 | physical association | 0.560 | 3 |
| SYT1 | physical association | 0.560 | 3 |
| TMEM143 | physical association | 0.560 | 3 |
| TMEM52B | physical association | 0.560 | 3 |
| UBE2I | physical association | 0.560 | 3 |
| TPST1 | association | 0.530 | 2 |
| GOLIM4 | association | 0.530 | 1 |
| CREB3 | physical association | 0.370 | 2 |
| BCL2L13 | physical association | 0.370 | 1 |
| BPNT2 | association | 0.350 | 1 |
| CLASP2 | association | 0.350 | 1 |
| GOSR2 | association | 0.350 | 1 |
BioGRID (181 interactions; top human partners by supporting records): SYNE4 (Two-hybrid; 5 records), CSGALNACT1 (Affinity Capture-MS; 3 records), FUT1 (Affinity Capture-MS; 3 records), GINM1 (Affinity Capture-MS; 3 records), LPAR1 (Affinity Capture-MS; 3 records), POGLUT1 (Affinity Capture-MS; 3 records), SLC30A1 (Affinity Capture-MS; 3 records), SLC30A5 (Affinity Capture-MS; 3 records), SLC35A5 (Affinity Capture-MS; 3 records), SLC8A3 (Affinity Capture-MS; 3 records), ST3GAL4 (Affinity Capture-MS; 3 records), ADPGK (Affinity Capture-MS; 2 records), B3GAT3 (Affinity Capture-MS; 2 records), CCDC8 (Affinity Capture-MS; 2 records), CHSY1 (Affinity Capture-MS; 2 records)
Disease & clinical
Genetic variants
Variant evidence for CSGALNACT2: 91 ClinVar records (0 pathogenic / likely pathogenic); 7 GWAS associations.
ClinVar
91 variants total. Per-class counts are floors (≥ shown; pagination cap):
| Classification | Count (floor) |
|---|---|
| Pathogenic | 0 |
| Likely pathogenic | 0 |
| Uncertain significance | 76 |
| Likely benign | 4 |
| Benign | 0 |
SpliceAI
Top 10 splice-impact sites by Δscore (adjacent positions with the same effect merged into one range; 28 predictions of 778):
| Position(s) | Effect | Δscore | Sites |
|---|---|---|---|
| 10:43138568–43138569 | donor_loss | 1.0000 | 4 |
| 10:43167002–43167003 | acceptor_loss | 1.0000 | 4 |
| 10:43167120 | donor_gain | 1.0000 | |
| 10:43175945 | acceptor_gain | 1.0000 | |
| 10:43175949 | acceptor_gain | 1.0000 | |
| 10:43175949–43175950 | acceptor_loss | 1.0000 | 4 |
| 10:43176033–43176034 | donor_loss | 1.0000 | 5 |
| 10:43138568 | donor_loss | 0.9900 | |
| 10:43155632 | acceptor_gain | 0.9900 | |
| 10:43158932–43158933 | donor_loss | 0.9900 | 6 |
AlphaMissense
1,344 missense substitutions predicted likely pathogenic (of 3,602 scored), across 325 residues. Top 20 hotspot residues, ranked by the number of likely-pathogenic substitutions (of those reachable by a single-nucleotide change), then by mean score:
| Residue | Likely-pathogenic substitutions | Mean am_pathogenicity | Max am_pathogenicity |
|---|---|---|---|
| M434 | 9 | 0.900 | 0.995 |
| M501 | 9 | 0.851 | 0.987 |
| D459 | 8 | 0.997 | 0.999 |
| H483 | 8 | 0.991 | 0.999 |
| D367 | 8 | 0.989 | 0.998 |
| H486 | 8 | 0.987 | 0.996 |
| D369 | 8 | 0.982 | 0.995 |
| D429 | 8 | 0.975 | 0.993 |
| F288 | 8 | 0.971 | 0.997 |
| F521 | 8 | 0.970 | 0.997 |
| S397 | 8 | 0.967 | 0.999 |
| F430 | 8 | 0.966 | 0.999 |
| D175 | 8 | 0.962 | 0.995 |
| F343 | 8 | 0.962 | 0.998 |
| F396 | 8 | 0.961 | 0.999 |
| D441 | 8 | 0.956 | 0.990 |
| F285 | 8 | 0.944 | 0.988 |
| F364 | 8 | 0.942 | 0.995 |
| F254 | 8 | 0.941 | 0.992 |
| F151 | 8 | 0.940 | 0.995 |
HPA cancer prognostics
RNA cancer specificity: Low cancer specificity
Disease associations
OMIM: gene MIM:616616 | disease phenotypes:
GWAS associations
7 associations:
| Study | Trait | p-value |
|---|---|---|
| GCST006585_1239 | Blood protein levels | 6e-57 |
| GCST002658_5 | Hirschsprung disease | 6e-19 |
| GCST000334_2 | Hirschsprung disease | 4e-18 |
| GCST012227_253 | Hip circumference adjusted for BMI | 8e-9 |
| GCST90000654_17 | Central corneal thickness | 2e-8 |
| GCST005531_126 | Multiple sclerosis | 3e-7 |
| GCST009391_885 | Metabolite levels | 6e-6 |
EFO canonical traits (from GWAS)
3 canonical traits:
| EFO ID | Trait name |
|---|---|
| EFO:0010533 | sorbitol measurement |
| EFO:0008039 | BMI-adjusted hip circumference |
| EFO:0005213 | central corneal thickness |
Drugs & pharmacology
Drug and pharmacology data
Is drug target: no
PharmGKB: 1 entry (CPIC guideline: no)
CTD chemical–gene interactions
47 total (human), top 30 by PubMed support.
| Chemical | Actions (top 5) | PubMed papers |
|---|---|---|
| Air Pollutants | increases expression, increases abundance, decreases expression | 4 |
| sodium arsenite | decreases expression, affects cotreatment, increases abundance, increases expression | 3 |
| Acetaminophen | increases expression | 3 |
| bisphenol A | affects expression, decreases expression | 2 |
| Arsenic | affects cotreatment, increases abundance, increases expression | 2 |
| Benzo(a)pyrene | increases expression, increases methylation | 2 |
| Silicon Dioxide | increases expression | 2 |
| Tretinoin | increases expression | 2 |
| Cyclosporine | increases expression | 2 |
| Aflatoxin B1 | increases expression | 2 |
| Asbestos, Crocidolite | affects expression, increases expression | 2 |
| Particulate Matter | decreases expression, increases abundance, increases expression | 2 |
| GSK-J4 | increases expression | 1 |
| pyrimidin-2-one beta-ribofuranoside | increases expression | 1 |
| sodium arsenate | increases abundance, increases expression | 1 |
| tris(2-butoxyethyl) phosphate | affects expression | 1 |
| tris(1,3-dichloro-2-propyl)phosphate | increases expression | 1 |
| cobaltous chloride | increases expression | 1 |
| butyraldehyde | increases expression | 1 |
| pentanal | increases expression | 1 |
| di-n-butylphosphoric acid | affects expression | 1 |
| perfluorooctane sulfonic acid | increases expression | 1 |
| CGP 52608 | increases reaction, affects binding | 1 |
| abrine | increases expression | 1 |
| (4-amino-1,4-dihydro-3-(2-pyridyl)-5-thioxo-1,2,4-triazole)copper(II) | increases expression | 1 |
| bisphenol S | increases methylation | 1 |
| jinfukang | affects cotreatment, decreases expression | 1 |
| (+)-JQ1 compound | increases expression | 1 |
| Leflunomide | increases expression | 1 |
| Amphotericin B | increases expression | 1 |
Clinical trials (associated diseases)
Via MONDO — disease-level, not drug-specific.
Related Atlas pages
- Disease cohort memberships (association, not causation — diseases whose associated-gene cohort lists this gene; a subset are also under Associated diseases): Hirschsprung disease