Protein Name PTTG1 regulator of sister chromatid separation, securin
Organism Homo sapiens
Gene ID 9232
Gene Symbol


UniProt O95997 (PTTG1_HUMAN), Q6IAL9 (Q6IAL9_HUMAN)
Relationships Total Number of functionally related compound(s) : 119
Total Number of Articles : 109

PTTG1 regulator of sister chromatid separation, securin

Gene Summary

The encoded protein is a homolog of yeast securin proteins, which prevent separins from promoting sister chromatid separation. It is an anaphase-promoting complex (APC) substrate that associates with a separin until activation of the APC. The gene product has transforming activity in vitro and tumorigenic activity in vivo, and the gene is highly expressed in various tumors. The gene product contains 2 PXXP motifs, which are required for its transforming and tumorigenic activities, as well as for its stimulation of basic fibroblast growth factor expression. It also contains a destruction box (D box) that is required for its degradation by the APC. The acidic C-terminal region of the encoded protein can act as a transactivation domain. The gene product is mainly a cytosolic protein, although it partially localizes in the nucleus. Three transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Sep 2013]

  • securin
  • ESP1-associated protein 1
  • endogenous cardiac regeneration-associated regulator
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