caspase

https://doi.org/10.1351/goldbook.12990
Any member of a family of intracellular cysteine proteinases that cleave proteins at specific aspartic acid residues to initiate or promote apoptosis.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1141 [Terms] [Paper]