SERPINE2
Glia-derived nexin
Also known as: GDN, GDN_HUMAN, nexin, PI7, PN1, PNI
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P07093
- Gene
- SERPINE2
- Ensembl
- ENSG00000135919
- Chromosome
- 2
- Canonical length
- 398 aa
- Protein class
- Plasma proteins, Predicted secreted proteins
- Subcellular location
- Golgi apparatus
- Secretome location
- Secreted in female reproductive system
OverviewNCBI Gene
This gene encodes a member of the serpin family of proteins, a group of proteins that inhibit serine proteases. Thrombin, urokinase, plasmin and trypsin are among the proteases that this family member can inhibit. This gene is a susceptibility gene for chronic obstructive pulmonary disease and for emphysema. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]
Canonical amino-acid sequenceUniProt
398 residues, UniProt reviewed canonical sequence.
>P07093|SERPINE2
1 MNWHLPLFLL ASVTLPSICS HFNPLSLEEL GSNTGIQVFN QIVKSRPHDN IVISPHGIAS
61 VLGMLQLGAD GRTKKQLAMV MRYGVNGVGK ILKKINKAIV SKKNKDIVTV ANAVFVKNAS
121 EIEVPFVTRN KDVFQCEVRN VNFEDPASAC DSINAWVKNE TRDMIDNLLS PDLIDGVLTR
181 LVLVNAVYFK GLWKSRFQPE NTKKRTFVAA DGKSYQVPML AQLSVFRCGS TSAPNDLWYN
241 FIELPYHGES ISMLIALPTE SSTPLSAIIP HISTKTIDSW MSIMVPKRVQ VILPKFTAVA
301 QTDLKEPLKV LGITDMFDSS KANFAKITTG SENLHVSHIL QKAKIEVSED GTKASAATTA
361 ILIARSSPPW FIVDRPFLFF IRHNPTGAVL FMGQINKPLocalizationUniProt · AlphaFold · HPA
Whether an antibody against SERPINE2 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)
- 0.26
- Highest tissue expression
- 1,025 nTPM
Expression across tissuesHPA
Tissue
- placenta: 1,025 nTPM
- ovary: 277 nTPM
- cerebral cortex: 153 nTPM
- urinary bladder: 137 nTPM
- amygdala: 136 nTPM
- midbrain: 133 nTPM
Single-cell type
- extravillous trophoblasts: 941 nCPM
- granulosa cells: 676 nCPM
- fibroblasts: 472 nCPM
- bergmann glia: 462 nCPM
- ovarian stromal cells: 446 nCPM
- melanocytes: 362 nCPM
Immune cell
- NK-cell: 23 nTPM
- naive CD4 T-cell: 13 nTPM
- naive CD8 T-cell: 6.9 nTPM
- total PBMC: 2.7 nTPM
- naive B-cell: 1.2 nTPM
- memory B-cell: 0.8 nTPM
Brain region
- medulla oblongata: 206 nTPM
- midbrain: 191 nTPM
- thalamus: 182 nTPM
- hypothalamus: 177 nTPM
- spinal cord: 168 nTPM
- white matter: 144 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about SERPINE2.
Disease | ImmuneIEDB
Conditions an epitope on SERPINE2 was assayed in.
- skin melanoma T cell
ReferencesPubMed · IEDB
Publications for SERPINE2 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
3 publications
- Innate immunity, epigenetics and autoimmunity in rheumatoid arthritis.
2009 · Mol Immunol · RCR 1.1 · 47 citations - Putative autoantibodies in the cerebrospinal fluid of Alzheimer's disease patients.
2019 · F1000Res · RCR 0.8 · 16 citations - Functional autoantibodies against serpin E2 in rheumatoid arthritis.
2010 · Arthritis Rheum · RCR 0.4 · 14 citations
Reference: T cellIEDB
1 publication
- Efficient identification of mutated cancer antigens recognized by T cells associated with durable tumor regressions.
2014 · Clin Cancer Res · RCR 7.8 · 325 citations
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. IEDB — curated epitope assays from the Immune Epitope Database (Vita et al., Nucleic Acids Research 2019). 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)
- 0.45
- gnomAD pLI
- 0.73
- gnomAD missense Z
- 1.59
- DepMap mean gene effect
- 0.15
- 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
- cell differentiation
- detection of mechanical stimulus involved in sensory perception
- innervation
- long-term synaptic potentiation
- negative regulation of blood coagulation
- negative regulation of cell growth
- negative regulation of cell population proliferation
- negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction
- negative regulation of plasminogen activation
- negative regulation of platelet aggregation
- negative regulation of protein catabolic process
- negative regulation of protein processing
- negative regulation of proteolysis
- negative regulation of smoothened signaling pathway
- negative regulation of sodium ion transport
- platelet activation
- positive regulation of astrocyte differentiation
- protein catabolic process
- regulation of cell migration
- regulation of synaptic transmission, glutamatergic
- regulation of timing of cell differentiation
- secretion by cell
- secretory granule organization
- cerebellar granular layer morphogenesis
- mating plug formation
- seminal vesicle epithelium development
Molecular functions
- glycosaminoglycan binding
- heparin binding
- serine-type endopeptidase inhibitor activity
- signaling receptor binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads SERPINE2 as an antibody target. Whether an autoantibody or antibody against SERPINE2 could matter depends on whether native SERPINE2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
SERPINE2 is annotated as secreted, so native SERPINE2 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 SERPINE2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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