GLCE
D-glucuronyl C5-epimerase
Also known as: GLCE_HUMAN, HSEPI, KIAA0836
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O94923
- Gene
- GLCE
- Ensembl
- ENSG00000138604
- Chromosome
- 15
- Canonical length
- 617 aa
- Protein class
- Enzymes, Metabolic proteins, Plasma proteins, Predicted intracellular proteins
- Subcellular location
- Mitochondria
- Quaternary structure
- Homodimer
OverviewNCBI Gene
Enables calcium ion binding activity; heparosan-N-sulfate-glucuronate 5-epimerase activity; and protein homodimerization activity. Involved in heparan sulfate proteoglycan biosynthetic process. Predicted to be located in Golgi membrane. Predicted to be active in Golgi apparatus. Implicated in cerebrovascular disease and hypertension. [provided by Alliance of Genome Resources, Jul 2025]
Canonical amino-acid sequenceUniProt
617 residues, UniProt reviewed canonical sequence.
>O94923|GLCE
1 MRCLAARVNY KTLIIICALF TLVTVLLWNK CSSDKAIQFP RRSSSGFRVD GFEKRAAASE
61 SNNYMNHVAK QQSEEAFPQE QQKAPPVVGG FNSNVGSKVL GLKYEEIDCL INDEHTIKGR
121 REGNEVFLPF TWVEKYFDVY GKVVQYDGYD RFEFSHSYSK VYAQRAPYHP DGVFMSFEGY
181 NVEVRDRVKC ISGVEGVPLS TQWGPQGYFY PIQIAQYGLS HYSKNLTEKP PHIEVYETAE
241 DRDKNKPNDW TVPKGCFMAN VADKSRFTNV KQFIAPETSE GVSLQLGNTK DFIISFDLKF
301 LTNGSVSVVL ETTEKNQLFT IHYVSNAQLI AFKERDIYYG IGPRTSWSTV TRDLVTDLRK
361 GVGLSNTKAV KPTKIMPKKV VRLIAKGKGF LDNITISTTA HMAAFFAASD WLVRNQDEKG
421 GWPIMVTRKL GEGFKSLEPG WYSAMAQGQA ISTLVRAYLL TKDHIFLNSA LRATAPYKFL
481 SEQHGVKAVF MNKHDWYEEY PTTPSSFVLN GFMYSLIGLY DLKETAGEKL GKEARSLYER
541 GMESLKAMLP LYDTGSGTIY DLRHFMLGIA PNLARWDYHT THINQLQLLS TIDESPVFKE
601 FVKRWKSYLK GSRAKHNLocalizationUniProt · AlphaFold · HPA
Whether an antibody against GLCE 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)
- 0.31
- Highest tissue expression
- 41 nTPM
Expression across tissuesHPA
Tissue
- cerebellum: 41 nTPM
- liver: 16 nTPM
- duodenum: 13 nTPM
- rectum: 13 nTPM
- placenta: 13 nTPM
- kidney: 12 nTPM
Single-cell type
- brain excitatory neurons: 200 nCPM
- microglia: 196 nCPM
- brain inhibitory neurons: 148 nCPM
- oligodendrocytes: 141 nCPM
- adrenal medulla cells: 138 nCPM
- renal collecting duct principal cells: 109 nCPM
Immune cell
- non-classical monocyte: 2.3 nTPM
- classical monocyte: 2.1 nTPM
- T-reg: 2 nTPM
- plasmacytoid DC: 1.9 nTPM
- myeloid DC: 1.8 nTPM
- intermediate monocyte: 1.6 nTPM
Brain region
- cerebellum: 76 nTPM
- hypothalamus: 20 nTPM
- midbrain: 19 nTPM
- choroid plexus: 19 nTPM
- basal ganglia: 17 nTPM
- white matter: 17 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)
- 0.44
- gnomAD pLI
- 0.65
- gnomAD missense Z
- 1.71
- DepMap mean gene effect
- -0.1
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- heparan sulfate proteoglycan biosynthetic process
- heparin proteoglycan biosynthetic process
- negative regulation of cell projection organization
- positive regulation of cell population proliferation
- positive regulation of SMAD protein signal transduction
Molecular functions
- calcium ion binding
- protein homodimerization activity
- racemase and epimerase activity, acting on carbohydrates and derivatives
- heparosan-N-sulfate-glucuronate 5-epimerase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
- D-glucuronyl C5-epimerase, C-terminal
- D-glucuronyl C5-epimerase
- D-glucuronyl C5-epimerase, beta-sandwich domain
- D-glucuronyl C5-epimerase C-terminus
- D-glucuronyl C5-epimerase, beta-sandwich domain
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of GLCE 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 GLCE as an antibody target. Whether an autoantibody or antibody against GLCE could matter depends on whether native GLCE is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
GLCE 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 GLCE as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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