Perforin
- OMIM: 170280
- UniProt: P14222
- MGI: 97551
Perforin ( PRF1 ) is a cytolytic protein ( CD8 positive T lymphocytes ), and NK cells can be found in the granules of cytotoxic T cells. In degranulation it perforates the cell membrane of the target cell and forms a pore. Through this pore Granzyme B penetrate into the target cell and trigger an apoptosis.
Mutations in the PRF1 gene can cause hemophagocytic lymphohistiocytosis type 2 ( FHL2 ).