PEBP1
Phosphatidylethanolamine-binding protein 1
Also known as: HCNP, PBP, PEBP, PEBP1_HUMAN, RKIP
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P30086
- Gene
- PEBP1
- Ensembl
- ENSG00000089220
- Chromosome
- 12
- Canonical length
- 187 aa
- Protein class
- Plasma proteins, Predicted intracellular proteins
- Subcellular location
- Plasma membrane,Cytosol
OverviewNCBI Gene
This gene encodes a member of the phosphatidylethanolamine-binding family of proteins and has been shown to modulate multiple signaling pathways, including the MAP kinase (MAPK), NF-kappa B, and glycogen synthase kinase-3 (GSK-3) signaling pathways. The encoded protein can be further processed to form a smaller cleavage product, hippocampal cholinergic neurostimulating peptide (HCNP), which may be involved in neural development. This gene has been implicated in numerous human cancers and may act as a metastasis suppressor gene. Multiple pseudogenes of this gene have been identified in the genome. [provided by RefSeq, Jul 2015]
Canonical amino-acid sequenceUniProt
187 residues, UniProt reviewed canonical sequence.
>P30086|PEBP1
1 MPVDLSKWSG PLSLQEVDEQ PQHPLHVTYA GAAVDELGKV LTPTQVKNRP TSISWDGLDS
61 GKLYTLVLTD PDAPSRKDPK YREWHHFLVV NMKGNDISSG TVLSDYVGSG PPKGTGLHRY
121 VWLVYEQDRP LKCDEPILSN RSGDHRGKFK VASFRKKYEL RAPVAGTCYQ AEWDDYVPKL
181 YEQLSGKLocalizationUniProt · AlphaFold · HPA
Whether an antibody against PEBP1 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)
- 0.25
- Highest tissue expression
- 2,061 nTPM
Expression across tissuesHPA
Tissue
- adrenal gland: 2,061 nTPM
- liver: 1,947 nTPM
- choroid plexus: 1,207 nTPM
- parathyroid gland: 1,093 nTPM
- kidney: 1,059 nTPM
- cerebral cortex: 992 nTPM
Single-cell type
- hepatocytes: 2,598 nCPM
- enterocytes: 1,928 nCPM
- esophageal apical cells: 1,688 nCPM
- breast lactating cells: 1,304 nCPM
- adrenal cortex cells: 1,294 nCPM
- migrating cytotrophoblasts: 1,274 nCPM
Immune cell
- memory B-cell: 273 nTPM
- T-reg: 260 nTPM
- memory CD4 T-cell: 260 nTPM
- total PBMC: 258 nTPM
- MAIT T-cell: 247 nTPM
- naive CD4 T-cell: 245 nTPM
Brain region
- white matter: 924 nTPM
- thalamus: 845 nTPM
- spinal cord: 786 nTPM
- cerebellum: 745 nTPM
- pons: 729 nTPM
- midbrain: 707 nTPM
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)
- 0.89
- gnomAD pLI
- 0.09
- gnomAD missense Z
- 0.94
- DepMap mean gene effect
- -0.16
- 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
- ATP binding
- enzyme binding
- phosphatidylethanolamine binding
- protein kinase binding
- RNA binding
- serine-type endopeptidase inhibitor activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of PEBP1 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 PEBP1 as an antibody target. Whether an autoantibody or antibody against PEBP1 could matter depends on whether native PEBP1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
PEBP1 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 PEBP1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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