TGM3
Protein-glutamine gamma-glutamyltransferase E
Also known as: TGE, TGM3_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q08188
- Gene
- TGM3
- Ensembl
- ENSG00000125780
- Chromosome
- 20
- Canonical length
- 693 aa
- Protein class
- Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Plasma proteins, Potential drug targets, Predicted intracellular proteins
OverviewNCBI Gene
Transglutaminases are enzymes that catalyze the crosslinking of proteins by epsilon-gamma glutamyl lysine isopeptide bonds. While the primary structure of transglutaminases is not conserved, they all have the same amino acid sequence at their active sites and their activity is calcium-dependent. The protein encoded by this gene consists of two polypeptide chains activated from a single precursor protein by proteolysis. The encoded protein is involved the later stages of cell envelope formation in the epidermis and hair follicle. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
693 residues, UniProt reviewed canonical sequence.
>Q08188|TGM3
1 MAALGVQSIN WQTAFNRQAH HTDKFSSQEL ILRRGQNFQV LMIMNKGLGS NERLEFIVST
61 GPYPSESAMT KAVFPLSNGS SGGWSAVLQA SNGNTLTISI SSPASAPIGR YTMALQIFSQ
121 GGISSVKLGT FILLFNPWLN VDSVFMGNHA EREEYVQEDA GIIFVGSTNR IGMIGWNFGQ
181 FEEDILSICL SILDRSLNFR RDAATDVASR NDPKYVGRVL SAMINSNDDN GVLAGNWSGT
241 YTGGRDPRSW NGSVEILKNW KKSGFSPVRY GQCWVFAGTL NTALRSLGIP SRVITNFNSA
301 HDTDRNLSVD VYYDPMGNPL DKGSDSVWNF HVWNEGWFVR SDLGPSYGGW QVLDATPQER
361 SQGVFQCGPA SVIGVREGDV QLNFDMPFIF AEVNADRITW LYDNTTGKQW KNSVNSHTIG
421 RYISTKAVGS NARMDVTDKY KYPEGSDQER QVFQKALGKL KPNTPFAATS SMGLETEEQE
481 PSIIGKLKVA GMLAVGKEVN LVLLLKNLSR DTKTVTVNMT AWTIIYNGTL VHEVWKDSAT
541 MSLDPEEEAE HPIKISYAQY EKYLKSDNMI RITAVCKVPD ESEVVVERDI ILDNPTLTLE
601 VLNEARVRKP VNVQMLFSNP LDEPVRDCVL MVEGSGLLLG NLKIDVPTLG PKEGSRVRFD
661 ILPSRSGTKQ LLADFSCNKF PAIKAMLSID VAELocalizationUniProt · AlphaFold · HPA
Whether an antibody against TGM3 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)
- 0.22
- Highest tissue expression
- 1,778 nTPM
Expression across tissuesHPA
Tissue
- esophagus: 1,778 nTPM
- salivary gland: 199 nTPM
- tonsil: 134 nTPM
- skin: 79 nTPM
- cervix: 38 nTPM
- vagina: 28 nTPM
Single-cell type
- esophageal apical cells: 848 nCPM
- suprabasal keratinocytes: 45 nCPM
- esophageal suprabasal cells: 39 nCPM
- ependymal cells: 18 nCPM
- neuroendocrine cells: 16 nCPM
- epididymal efferent duct ciliated cells: 3.8 nCPM
Immune cell
- neutrophil: 30 nTPM
- eosinophil: 0.1 nTPM
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
Brain region
- midbrain: 0.6 nTPM
- cerebral cortex: 0.5 nTPM
- amygdala: 0.3 nTPM
- medulla oblongata: 0.2 nTPM
- spinal cord: 0.2 nTPM
- hippocampal formation: 0.1 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about TGM3.
Disease | AllUniProt
Conditions TGM3 is implicated in, by any mechanism.
- Uncombable hair syndrome 2 (UHS2) MIM:617251
Disease | GeneticClinVar
1 pathogenic / likely-pathogenic of 173 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Uncombable hair syndrome 2
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)
- 0.69
- gnomAD pLI
- 0
- gnomAD missense Z
- -0.41
- DepMap mean gene effect
- 0.06
- DepMap dependency class
- none
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
- hair follicle morphogenesis
- keratinization
- keratinocyte differentiation
- peptide cross-linking
- protein modification process
Molecular functions
- acyltransferase activity
- calcium ion binding
- catalytic activity
- protein-glutamine gamma-glutamyltransferase activity
- structural molecule activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Transglutaminase, N-terminal
- Transglutaminase-like
- Transglutaminase, C-terminal
- Immunoglobulin-like fold
- Transglutaminase, active site
- Immunoglobulin E-set
- Protein-glutamine gamma-glutamyltransferase, animal
- Transglutaminase, C-terminal domain superfamily
- Transglutaminase-like superfamily
- Papain-like cysteine peptidase superfamily
- Protein-glutamine gamma-glutamyltransferases
- Transglutaminase family
- Transglutaminase family, C-terminal ig like domain
- Transglutaminase-like superfamily
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of TGM3 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 TGM3 as an antibody target. Whether an autoantibody or antibody against TGM3 could matter depends on whether native TGM3 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
TGM3 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 TGM3 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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