Seroatlas · Human Serome Atlas

JAG2

Protein jagged-2

Also known as: JAG2_HUMAN

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q9Y219
Gene
JAG2
Ensembl
ENSG00000184916
Chromosome
14
Canonical length
1238 aa
Protein class
Disease related genes, Human disease related genes, Predicted membrane proteins
Subcellular location
Vesicles,Cytosol

OverviewNCBI Gene

The Notch signaling pathway is an intercellular signaling mechanism that is essential for proper embryonic development. Members of the Notch gene family encode transmembrane receptors that are critical for various cell fate decisions. The protein encoded by this gene is one of several ligands that activate Notch and related receptors. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

1238 residues, UniProt reviewed canonical sequence.

>Q9Y219|JAG2
     1  MRAQGRGRLP RRLLLLLALW VQAARPMGYF ELQLSALRNV NGELLSGACC DGDGRTTRAG
    61  GCGHDECDTY VRVCLKEYQA KVTPTGPCSY GHGATPVLGG NSFYLPPAGA AGDRARARAR
   121  AGGDQDPGLV VIPFQFAWPR SFTLIVEAWD WDNDTTPNEE LLIERVSHAG MINPEDRWKS
   181  LHFSGHVAHL ELQIRVRCDE NYYSATCNKF CRPRNDFFGH YTCDQYGNKA CMDGWMGKEC
   241  KEAVCKQGCN LLHGGCTVPG ECRCSYGWQG RFCDECVPYP GCVHGSCVEP WQCNCETNWG
   301  GLLCDKDLNY CGSHHPCTNG GTCINAEPDQ YRCTCPDGYS GRNCEKAEHA CTSNPCANGG
   361  SCHEVPSGFE CHCPSGWSGP TCALDIDECA SNPCAAGGTC VDQVDGFECI CPEQWVGATC
   421  QLDANECEGK PCLNAFSCKN LIGGYYCDCI PGWKGINCHI NVNDCRGQCQ HGGTCKDLVN
   481  GYQCVCPRGF GGRHCELERD ECASSPCHSG GLCEDLADGF HCHCPQGFSG PLCEVDVDLC
   541  EPSPCRNGAR CYNLEGDYYC ACPDDFGGKN CSVPREPCPG GACRVIDGCG SDAGPGMPGT
   601  AASGVCGPHG RCVSQPGGNF SCICDSGFTG TYCHENIDDC LGQPCRNGGT CIDEVDAFRC
   661  FCPSGWEGEL CDTNPNDCLP DPCHSRGRCY DLVNDFYCAC DDGWKGKTCH SREFQCDAYT
   721  CSNGGTCYDS GDTFRCACPP GWKGSTCAVA KNSSCLPNPC VNGGTCVGSG ASFSCICRDG
   781  WEGRTCTHNT NDCNPLPCYN GGICVDGVNW FRCECAPGFA GPDCRINIDE CQSSPCAYGA
   841  TCVDEINGYR CSCPPGRAGP RCQEVIGFGR SCWSRGTPFP HGSSWVEDCN SCRCLDGRRD
   901  CSKVWCGWKP CLLAGQPEAL SAQCPLGQRC LEKAPGQCLR PPCEAWGECG AEEPPSTPCL
   961  PRSGHLDNNC ARLTLHFNRD HVPQGTTVGA ICSGIRSLPA TRAVARDRLL VLLCDRASSG
  1021  ASAVEVAVSF SPARDLPDSS LIQGAAHAIV AAITQRGNSS LLLAVTEVKV ETVVTGGSST
  1081  GLLVPVLCGA FSVLWLACVV LCVWWTRKRR KERERSRLPR EESANNQWAP LNPIRNPIER
  1141  PGGHKDVLYQ CKNFTPPPRR ADEALPGPAG HAAVREDEED EDLGRGEEDS LEAEKFLSHK
  1201  FTKDPGRSPG RPAHWASGPK VDNRAVRSIN EARYAGKE

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against JAG2 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
Cell surface
Secreted
No
Transmembrane segments
1
Mean surface accessibility (rSASA)
0.4
Highest tissue expression
18 nTPM

Expression across tissuesHPA

Tissue

  • skin: 18 nTPM
  • pituitary gland: 16 nTPM
  • heart muscle: 13 nTPM
  • breast: 9.2 nTPM
  • skeletal muscle: 9 nTPM
  • esophagus: 8.4 nTPM

Single-cell type

  • breast myoepithelial cells: 73 nCPM
  • corticotrophs: 68 nCPM
  • vascular endothelial cells: 43 nCPM
  • basal prostatic cells: 39 nCPM
  • salivary basal cells: 38 nCPM
  • epididymal basal cells: 35 nCPM

Immune cell

  • basophil: 0 nTPM
  • classical monocyte: 0 nTPM
  • eosinophil: 0 nTPM
  • gdT-cell: 0 nTPM
  • intermediate monocyte: 0 nTPM
  • MAIT T-cell: 0 nTPM

Brain region

  • hypothalamus: 22 nTPM
  • pons: 21 nTPM
  • midbrain: 16 nTPM
  • medulla oblongata: 16 nTPM
  • amygdala: 15 nTPM
  • cerebral cortex: 15 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about JAG2.

Disease | AllUniProt

Conditions JAG2 is implicated in, by any mechanism.

Disease | GeneticClinVar

5 pathogenic / likely-pathogenic of 380 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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)
0.14
gnomAD pLI
1
gnomAD missense Z
2.2
DepMap mean gene effect
0.05
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

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of JAG2 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 JAG2 as an antibody target. Whether an autoantibody or antibody against JAG2 could matter depends on whether native JAG2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

JAG2 is annotated at the cell surface, where native JAG2 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.

Annotation status

The present source text does not explicitly label JAG2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/JAG2. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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