MGAT2
Alpha-1,6-mannosyl-glycoprotein 2-beta-N-acetylglucosaminyltransferase
Also known as: GNT-II, MGAT2_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q10469
- Gene
- MGAT2
- Ensembl
- ENSG00000168282
- Chromosome
- 14
- Canonical length
- 447 aa
- Protein class
- Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Potential drug targets, Predicted intracellular proteins
- Subcellular location
- Golgi apparatus
- Quaternary structure
- Homodimer
OverviewNCBI Gene
The product of this gene is a Golgi enzyme catalyzing an essential step in the conversion of oligomannose to complex N-glycans. The enzyme has the typical glycosyltransferase domains: a short N-terminal cytoplasmic domain, a hydrophobic non-cleavable signal-anchor domain, and a C-terminal catalytic domain. Mutations in this gene may lead to carbohydrate-deficient glycoprotein syndrome, type II. The coding region of this gene is intronless. Transcript variants with a spliced 5' UTR may exist, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
447 residues, UniProt reviewed canonical sequence.
>Q10469|MGAT2
1 MRFRIYKRKV LILTLVVAAC GFVLWSSNGR QRKNEALAPP LLDAEPARGA GGRGGDHPSV
61 AVGIRRVSNV SAASLVPAVP QPEADNLTLR YRSLVYQLNF DQTLRNVDKA GTWAPRELVL
121 VVQVHNRPEY LRLLLDSLRK AQGIDNVLVI FSHDFWSTEI NQLIAGVNFC PVLQVFFPFS
181 IQLYPNEFPG SDPRDCPRDL PKNAALKLGC INAEYPDSFG HYREAKFSQT KHHWWWKLHF
241 VWERVKILRD YAGLILFLEE DHYLAPDFYH VFKKMWKLKQ QECPECDVLS LGTYSASRSF
301 YGMADKVDVK TWKSTEHNMG LALTRNAYQK LIECTDTFCT YDDYNWDWTL QYLTVSCLPK
361 FWKVLVPQIP RIFHAGDCGM HHKKTCRPST QSAQIESLLN NNKQYMFPET LTISEKFTVV
421 AISPPRKNGG WGDIRDHELC KSYRRLQLocalizationUniProt · AlphaFold · HPA
Whether an antibody against MGAT2 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Other membrane
- Secreted
- No
- Transmembrane segments
- 1
- Mean surface accessibility (rSASA)
- 0.32
- Highest tissue expression
- 38 nTPM
Expression across tissuesHPA
Tissue
- liver: 38 nTPM
- lymph node: 24 nTPM
- tonsil: 24 nTPM
- appendix: 23 nTPM
- testis: 23 nTPM
- pancreas: 22 nTPM
Single-cell type
- hepatocytes: 71 nCPM
- plasma cells: 68 nCPM
- megakaryocytes: 56 nCPM
- extravillous trophoblasts: 55 nCPM
- decidual stromal cells: 50 nCPM
- early primary spermatocytes: 49 nCPM
Immune cell
- basophil: 49 nTPM
- plasmacytoid DC: 47 nTPM
- total PBMC: 45 nTPM
- myeloid DC: 40 nTPM
- non-classical monocyte: 40 nTPM
- eosinophil: 39 nTPM
Brain region
- choroid plexus: 18 nTPM
- thalamus: 14 nTPM
- white matter: 14 nTPM
- spinal cord: 13 nTPM
- cerebellum: 13 nTPM
- hypothalamus: 13 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about MGAT2.
Disease | AllUniProt
Conditions MGAT2 is implicated in, by any mechanism.
- Congenital disorder of glycosylation 2A (CDG2A) MIM:212066
Disease | GeneticClinVar
14 pathogenic / likely-pathogenic of 173 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- MGAT2-congenital disorder of glycosylation
- Abnormal facial shape
- Abnormal glycosylation
- Global developmental delay
- MGAT2-related disorder
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.72
- gnomAD pLI
- 0.03
- gnomAD missense Z
- 0.52
- DepMap mean gene effect
- -0.16
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- oligosaccharide biosynthetic process
- protein N-linked glycosylation
- protein N-linked glycosylation via asparagine
- viral protein processing
Molecular functions
- manganese ion binding
- protein homodimerization activity
- alpha-1,6-mannosylglycoprotein 2-beta-N-acetylglucosaminyltransferase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Nucleotide-diphospho-sugar transferases
- N-acetylglucosaminyltransferase II
- N-acetylglucosaminyltransferase II (MGAT2)
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads MGAT2 as an antibody target. Whether an autoantibody or antibody against MGAT2 could matter depends on whether native MGAT2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
MGAT2 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label MGAT2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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