errfi1是一種胞質蛋白，其表達隨細胞生長而上調（Wick等人，1995[PubMed 7641805]）。與大鼠基因-33的蛋白質產物具有顯著的同源性，該基因在細胞應激期間被誘導并介導細胞信號傳導（Makkinje等人，2000[PubMed 10749885]；Fiorentino等人，2000[PubMed 11003669]）。
ERRFI1 is a cytoplasmic protein whose expression is upregulated with cell growth (Wick et al., 1995 [PubMed 7641805]). It shares significant homology with the protein product of rat gene-33, which is induced during cell stress and mediates cell signaling (Makkinje et al., 2000 [PubMed 10749885]; Fiorentino et al., 2000 [PubMed 11003669]).