Seroatlas · Human Serome Atlas

RCAN1

Calcipressin-1

Also known as: DSCR1, RCAN1_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
P53805
Gene
RCAN1
Ensembl
ENSG00000159200
Chromosome
21
Canonical length
252 aa
Protein class
Human disease related genes, Predicted intracellular proteins
Subcellular location
Cytosol

OverviewNCBI Gene

The protein encoded by this gene interacts with calcineurin A and inhibits calcineurin-dependent signaling pathways, possibly affecting central nervous system development. This gene is located in the minimal candidate region for the Down syndrome phenotype, and is overexpressed in the brain of Down syndrome fetuses. Chronic overexpression of this gene may lead to neurofibrillary tangles such as those associated with Alzheimer disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2013]

Canonical amino-acid sequenceUniProt

252 residues, UniProt reviewed canonical sequence.

>P53805|RCAN1
     1  MEDGVAGPQL GAAAEAAEAA EARARPGVTL RPFAPLSGAA EADEGGGDWS FIDCEMEEVD
    61  LQDLPSATIA CHLDPRVFVD GLCRAKFESL FRTYDKDITF QYFKSFKRVR INFSNPFSAA
   121  DARLQLHKTE FLGKEMKLYF AQTLHIGSSH LAPPNPDKQF LISPPASPPV GWKQVEDATP
   181  VINYDLLYAI SKLGPGEKYE LHAATDTTPS VVVHVCESDQ EKEEEEEMER MRRPKPKIIQ
   241  TRRPEYTPIH LS

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against RCAN1 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)
0.54
Highest tissue expression
426 nTPM

Expression across tissuesHPA

Tissue

  • parathyroid gland: 426 nTPM
  • liver: 240 nTPM
  • choroid plexus: 129 nTPM
  • spinal cord: 122 nTPM
  • urinary bladder: 94 nTPM
  • placenta: 90 nTPM

Single-cell type

  • podocytes: 115 nCPM
  • oligodendrocytes: 86 nCPM
  • choroid plexus epithelial cells: 79 nCPM
  • renal connecting tubule cells: 76 nCPM
  • brain inhibitory neurons: 65 nCPM
  • oligodendrocyte progenitor cells: 64 nCPM

Immune cell

  • eosinophil: 4.9 nTPM
  • plasmacytoid DC: 3 nTPM
  • non-classical monocyte: 2.3 nTPM
  • intermediate monocyte: 2 nTPM
  • myeloid DC: 1.6 nTPM
  • classical monocyte: 1.1 nTPM

Brain region

  • white matter: 77 nTPM
  • thalamus: 75 nTPM
  • choroid plexus: 67 nTPM
  • pons: 65 nTPM
  • cerebral cortex: 65 nTPM
  • medulla oblongata: 64 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)
1.07
gnomAD pLI
0.02
gnomAD missense Z
1.02
DepMap mean gene effect
0.08
DepMap dependency class
selective

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 RCAN1 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 RCAN1 as an antibody target. Whether an autoantibody or antibody against RCAN1 could matter depends on whether native RCAN1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

RCAN1 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 RCAN1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/RCAN1. 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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