Article · Wikipedia archive · Last revised Jul 24, 2026

TMEM123

Porimin is a protein that in humans is encoded by the TMEM123 gene.

Last revised
Jul 24, 2026
Read time
≈ 3 min
Length
712 w
Citations
11
Source
TMEM123
Identifiers
AliasesTMEM123, KCT3, PORIMIN, PORMIN, transmembrane protein 123
External IDsOMIM: 606356; MGI: 1919179; HomoloGene: 14177; GeneCards: TMEM123; OMA:TMEM123 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_052932

NM_133739

RefSeq (protein)

NP_443164

NP_598500

Location (UCSC)Chr 11: 102.4 – 102.47 MbChr 9: 7.76 – 7.79 Mb
PubMed search34
Wikidata
View/Edit HumanView/Edit Mouse

Porimin is a protein that in humans is encoded by the TMEM123 gene.56

This gene encodes a highly glycosylated transmembrane protein with a high content of threonine and serine residues in its extracellular domain, similar to a broadly defined category of proteins termed mucins.

Exposure of some cell types to anti-PORIMIN (pro-oncosis receptor inducing membrane injury) antibody, crosslinks this protein on the cell surface and induces a type of cell death termed oncosis.

Oncosis is distinct from apoptosis and is characterized by a loss of cell membrane integrity without DNA fragmentation. This gene product is proposed to function as a cell surface receptor that mediates cell death.6

References

References

  1. GRCh38: Ensembl release 89: ENSG00000152558Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000050912Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Ma F, Zhang C, Prasad KV, Freeman GJ, Schlossman SF (Aug 2001). "Molecular cloning of Porimin, a novel cell surface receptor mediating oncotic cell death". Proc Natl Acad Sci U S A. 98 (17): 9778–83. Bibcode:2001PNAS...98.9778M. doi:10.1073/pnas.171322898. PMC 55529. PMID 11481458.
  6. "Entrez Gene: TMEM123 transmembrane protein 123".
Further reading

Further reading