Seroatlas · Human Serome Atlas

ANGPT2

Angiopoietin-2

Also known as: Ang2, ANGP2_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
O15123
Gene
ANGPT2
Ensembl
ENSG00000091879
Chromosome
8
Canonical length
496 aa
Protein class
Cancer-related genes, Disease related genes, FDA approved drug targets, Human disease related genes, Plasma proteins, Predicted secreted proteins, RAS pathway related proteins
Secretome location
Secreted to blood

OverviewNCBI Gene

This gene belongs to the angiopoietin family of growth factors. The protein encoded by this gene is an antagonist of angiopoietin 1, and both angiopoietin 1 and angiopoietin 2 are ligands for the endothelial TEK receptor tyrosine kinase. Angiopoietin 2 is upregulated in multiple inflammatory diseases and is implicated in the direct control of inflammation-related signaling pathways. The encoded protein affects angiogenesis during embryogenesis and tumorigenesis, disrupts the vascular remodeling ability of angiopoietin 1, and may induce endothelial cell apoptosis. This gene serves a prognostic biomarker for acute respiratory distress syndrome. [provided by RefSeq, Aug 2020]

Canonical amino-acid sequenceUniProt

496 residues, UniProt reviewed canonical sequence.

>O15123|ANGPT2
     1  MWQIVFFTLS CDLVLAAAYN NFRKSMDSIG KKQYQVQHGS CSYTFLLPEM DNCRSSSSPY
    61  VSNAVQRDAP LEYDDSVQRL QVLENIMENN TQWLMKLENY IQDNMKKEMV EIQQNAVQNQ
   121  TAVMIEIGTN LLNQTAEQTR KLTDVEAQVL NQTTRLELQL LEHSLSTNKL EKQILDQTSE
   181  INKLQDKNSF LEKKVLAMED KHIIQLQSIK EEKDQLQVLV SKQNSIIEEL EKKIVTATVN
   241  NSVLQKQQHD LMETVNNLLT MMSTSNSAKD PTVAKEEQIS FRDCAEVFKS GHTTNGIYTL
   301  TFPNSTEEIK AYCDMEAGGG GWTIIQRRED GSVDFQRTWK EYKVGFGNPS GEYWLGNEFV
   361  SQLTNQQRYV LKIHLKDWEG NEAYSLYEHF YLSSEELNYR IHLKGLTGTA GKISSISQPG
   421  NDFSTKDGDN DKCICKCSQM LTGGWWFDAC GPSNLNGMYY PQRQNTNKFN GIKWYYWKGS
   481  GYSLKATTMM IRPADF

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against ANGPT2 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
Secreted
Secreted
Yes
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.41
Highest tissue expression
15 nTPM

Expression across tissuesHPA

Tissue

  • blood vessel: 15 nTPM
  • adipose tissue: 13 nTPM
  • placenta: 11 nTPM
  • urinary bladder: 9.9 nTPM
  • breast: 8 nTPM
  • thyroid gland: 6.8 nTPM

Single-cell type

  • lymphatic endothelial cells: 554 nCPM
  • epicardial cells: 264 nCPM
  • cardiomyocytes: 198 nCPM
  • pericytes: 153 nCPM
  • vascular endothelial cells: 150 nCPM
  • vascular smooth muscle cells: 126 nCPM

Immune cell

  • basophil: 1.6 nTPM
  • naive B-cell: 0.4 nTPM
  • naive CD8 T-cell: 0.3 nTPM
  • plasmacytoid DC: 0.3 nTPM
  • classical monocyte: 0.2 nTPM
  • gdT-cell: 0.2 nTPM

Brain region

  • pons: 27 nTPM
  • medulla oblongata: 27 nTPM
  • cerebral cortex: 21 nTPM
  • spinal cord: 18 nTPM
  • thalamus: 18 nTPM
  • white matter: 17 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about ANGPT2.

Disease | AllUniProt

Conditions ANGPT2 is implicated in, by any mechanism.

Disease | GeneticClinVar

3 pathogenic / likely-pathogenic of 121 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

ReferencesPubMed · IEDB

Publications for ANGPT2 from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.

Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.

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)
0.38
gnomAD pLI
0.83
gnomAD missense Z
-0.53
DepMap mean gene effect
0.09
DepMap dependency class
none

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

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of ANGPT2 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 ANGPT2 as an antibody target. Whether an autoantibody or antibody against ANGPT2 could matter depends on whether native ANGPT2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

ANGPT2 is annotated as secreted, so native ANGPT2 circulates and is directly accessible to antibodies. Secreted and cell-surface proteins are the autoantibody targets most likely to act like drugs, blocking or depleting the native protein.

Annotation status

The present source text does not explicitly label ANGPT2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/ANGPT2. 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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