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 IRPADFLocalizationUniProt · 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.
- Lymphatic malformation 10 (LMPHM10) MIM:619369
Disease | GeneticClinVar
3 pathogenic / likely-pathogenic of 121 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Lymphatic malformation 10
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.
Reference: AutoantibodyPubMed
1 publication
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
- angiogenesis
- animal organ regeneration
- blood coagulation
- cellular response to growth factor stimulus
- gene expression
- germ cell development
- glomerulus vasculature development
- maternal process involved in female pregnancy
- negative regulation of angiogenesis
- negative regulation of blood vessel endothelial cell migration
- negative regulation of cell-substrate adhesion
- positive regulation of angiogenesis
- positive regulation of coagulation
- response to activity
- response to glucose
- response to hypoxia
- response to mechanical stimulus
- signal transduction
- Tie signaling pathway
- negative regulation of positive chemotaxis
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Fibrinogen, alpha/beta/gamma chain, C-terminal globular domain
- Fibrinogen, alpha/beta/gamma chain, C-terminal globular, subdomain 1
- Fibrinogen, conserved site
- Fibrinogen-like, C-terminal
- Fibrinogen/angiopoietin-like
- Angiopoietin-1/2/4 domain
- Fibrinogen beta and gamma chains, C-terminal globular domain
- ANG-1-like domain
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.
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