PROCR
Endothelial protein C receptor
Also known as: CCD41, CD201, EPCR, EPCR_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9UNN8
- Gene
- PROCR
- Ensembl
- ENSG00000101000
- Chromosome
- 20
- Canonical length
- 238 aa
- Protein class
- Candidate cardiovascular disease genes, CD markers, FDA approved drug targets, Plasma proteins, Predicted intracellular proteins, Predicted membrane proteins
OverviewNCBI Gene
The protein encoded by this gene is a receptor for activated protein C, a serine protease activated by and involved in the blood coagulation pathway. The encoded protein is an N-glycosylated type I membrane protein that enhances the activation of protein C. Mutations in this gene have been associated with venous thromboembolism and myocardial infarction, as well as with late fetal loss during pregnancy. The encoded protein may also play a role in malarial infection and has been associated with cancer. [provided by RefSeq, Jul 2013]
Canonical amino-acid sequenceUniProt
238 residues, UniProt reviewed canonical sequence.
>Q9UNN8|PROCR
1 MLTTLLPILL LSGWAFCSQD ASDGLQRLHM LQISYFRDPY HVWYQGNASL GGHLTHVLEG
61 PDTNTTIIQL QPLQEPESWA RTQSGLQSYL LQFHGLVRLV HQERTLAFPL TIRCFLGCEL
121 PPEGSRAHVF FEVAVNGSSF VSFRPERALW QADTQVTSGV VTFTLQQLNA YNRTRYELRE
181 FLEDTCVQYV QKHISAENTK GSQTSRSYTS LVLGVLVGSF IIAGVAVGIF LCTGGRRCLocalizationUniProt · AlphaFold · HPA
Whether an antibody against PROCR 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)
- 0.37
- Highest tissue expression
- 120 nTPM
Expression across tissuesHPA
Tissue
- adipose tissue: 120 nTPM
- breast: 55 nTPM
- blood vessel: 44 nTPM
- fallopian tube: 42 nTPM
- heart muscle: 42 nTPM
- choroid plexus: 38 nTPM
Single-cell type
- mesothelial cells: 397 nCPM
- fibro-adipogenic progenitors: 265 nCPM
- lymphatic endothelial cells: 200 nCPM
- extravillous trophoblasts: 183 nCPM
- granulosa cells: 178 nCPM
- fibroblasts: 139 nCPM
Immune cell
- MAIT T-cell: 15 nTPM
- gdT-cell: 8.1 nTPM
- myeloid DC: 7.8 nTPM
- naive CD8 T-cell: 5.8 nTPM
- memory CD8 T-cell: 5.1 nTPM
- basophil: 4.1 nTPM
Brain region
- choroid plexus: 31 nTPM
- cerebellum: 25 nTPM
- thalamus: 23 nTPM
- white matter: 23 nTPM
- medulla oblongata: 22 nTPM
- pons: 19 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about PROCR.
Disease | AutoantibodyPubMed
Conditions in which antibodies against PROCR are reported. Each links to that disease's full target list.
ReferencesPubMed · IEDB
Publications for PROCR 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
4 publications
- Autoantibodies against endothelial protein C receptor and integrin αvβ6 predict the development of ulcerative colitis.
2025 · J Gastroenterol · RCR 2 · 5 citations - Novel Diagnostic Autoantibodies Against Endothelial Protein C Receptor in Patients With Ulcerative Colitis.
2023 · Clin Gastroenterol Hepatol · RCR 1.6 · 11 citations - Distinct Autoantibodies Against Endothelial Protein C Receptor in Ulcerative Colitis.
2021 · Gastroenterology · RCR 0.5 · 7 citations - Autoantibodies against endothelial protein C receptor and the risk of a first deep vein thrombosis.
2007 · J Thromb Haemost · RCR 0.4 · 14 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. 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)
- 1.05
- gnomAD pLI
- 0.01
- gnomAD missense Z
- 0.54
- DepMap mean gene effect
- -0.03
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 6% 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
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads PROCR as an antibody target. Whether an autoantibody or antibody against PROCR could matter depends on whether native PROCR is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
PROCR is annotated at the cell surface, where native PROCR 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 PROCR as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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