OGA
Protein O-GlcNAcase
Also known as: MEA5, MGEA5, NCOAT, OGA_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O60502
- Gene
- OGA
- Ensembl
- ENSG00000198408
- Chromosome
- 10
- Canonical length
- 916 aa
- Protein class
- Enzymes, Metabolic proteins, Predicted intracellular proteins
- Subcellular location
- Cytosol
OverviewNCBI Gene
The dynamic modification of cytoplasmic and nuclear proteins by O-linked N-acetylglucosamine (O-GlcNAc) addition and removal on serine and threonine residues is catalyzed by OGT (MIM 300255), which adds O-GlcNAc, and MGEA5, a glycosidase that removes O-GlcNAc modifications (Gao et al., 2001 [PubMed 11148210]).[supplied by OMIM, Mar 2008]
Canonical amino-acid sequenceUniProt
916 residues, UniProt reviewed canonical sequence.
>O60502|OGA
1 MVQKESQATL EERESELSSN PAASAGASLE PPAAPAPGED NPAGAGGAAV AGAAGGARRF
61 LCGVVEGFYG RPWVMEQRKE LFRRLQKWEL NTYLYAPKDD YKHRMFWREM YSVEEAEQLM
121 TLISAAREYE IEFIYAISPG LDITFSNPKE VSTLKRKLDQ VSQFGCRSFA LLFDDIDHNM
181 CAADKEVFSS FAHAQVSITN EIYQYLGEPE TFLFCPTEYC GTFCYPNVSQ SPYLRTVGEK
241 LLPGIEVLWT GPKVVSKEIP VESIEEVSKI IKRAPVIWDN IHANDYDQKR LFLGPYKGRS
301 TELIPRLKGV LTNPNCEFEA NYVAIHTLAT WYKSNMNGVR KDVVMTDSED STVSIQIKLE
361 NEGSDEDIET DVLYSPQMAL KLALTEWLQE FGVPHQYSSR QVAHSGAKAS VVDGTPLVAA
421 PSLNATTVVT TVYQEPIMSQ GAALSGEPTT LTKEEEKKQP DEEPMDMVVE KQEETDHKND
481 NQILSEIVEA KMAEELKPMD TDKESIAESK SPEMSMQEDC ISDIAPMQTD EQTNKEQFVP
541 GPNEKPLYTA EPVTLEDLQL LADLFYLPYE HGPKGAQMLR EFQWLRANSS VVSVNCKGKD
601 SEKIEEWRSR AAKFEEMCGL VMGMFTRLSN CANRTILYDM YSYVWDIKSI MSMVKSFVQW
661 LGCRSHSSAQ FLIGDQEPWA FRGGLAGEFQ RLLPIDGAND LFFQPPPLTP TSKVYTIRPY
721 FPKDEASVYK ICREMYDDGV GLPFQSQPDL IGDKLVGGLL SLSLDYCFVL EDEDGICGYA
781 LGTVDVTPFI KKCKISWIPF MQEKYTKPNG DKELSEAEKI MLSFHEEQEV LPETFLANFP
841 SLIKMDIHKK VTDPSVAKSM MACLLSSLKA NGSRGAFCEV RPDDKRILEF YSKLGCFEIA
901 KMEGFPKDVV ILGRSLLocalizationUniProt · AlphaFold · HPA
Whether an antibody against OGA 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
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.34
- Highest tissue expression
- 96 nTPM
Expression across tissuesHPA
Tissue
- cerebellum: 96 nTPM
- retina: 93 nTPM
- bone marrow: 84 nTPM
- basal ganglia: 76 nTPM
- blood vessel: 74 nTPM
- spleen: 72 nTPM
Single-cell type
- adipocytes: 853 nCPM
- neutrophils: 658 nCPM
- neutrophil progenitors: 336 nCPM
- proximal tubule cells: 280 nCPM
- b-cells: 279 nCPM
- brain inhibitory neurons: 262 nCPM
Immune cell
- basophil: 14 nTPM
- neutrophil: 14 nTPM
- naive B-cell: 7.5 nTPM
- eosinophil: 7.2 nTPM
- memory B-cell: 6.6 nTPM
- NK-cell: 6.6 nTPM
Brain region
- cerebellum: 182 nTPM
- hypothalamus: 151 nTPM
- hippocampal formation: 146 nTPM
- basal ganglia: 142 nTPM
- cerebral cortex: 142 nTPM
- amygdala: 135 nTPM
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)
- 0.32
- gnomAD pLI
- 0.97
- DepMap mean gene effect
- -0.16
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- glycoprotein catabolic process
- glycoprotein metabolic process
- N-acetylglucosamine metabolic process
- protein deglycosylation
- protein O-linked glycosylation
Molecular functions
- hexosaminidase activity
- hyalurononglucosaminidase activity
- identical protein binding
- [protein]-3-O-(N-acetyl-D-glucosaminyl)-L-serine/L-threonine O-N-acetyl-alpha-D-glucosaminase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Acyl-CoA N-acyltransferase
- Glycoside hydrolase superfamily
- Beta-N-acetylglucosaminidase, catalytic domain
- Glycosyl Hydrolase Family 84
- beta-N-acetylglucosaminidase
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of OGA in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads OGA as an antibody target. Whether an autoantibody or antibody against OGA could matter depends on whether native OGA is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
OGA 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 OGA as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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