Granzyme B

UniProtKB accession:  P18291

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Abundant protease in the cytosolic granules of cytotoxic T-cells and NK-cells which activates caspase-independent pyroptosis when delivered into the target cell through the immunological synapse (By similarity). It cleaves after Asp (PubMed:9765264). Once delivered into the target cell, acts by catalyzing cleavage of gasdermin-E (GSDME), releasing the pore-forming moiety of GSDME, thereby triggering pyroptosis and target cell death (By similarity). Seems to be linked to an activation cascade of caspases (aspartate-specific cysteine proteases) responsible for apoptosis execution (By similarity). Cleaves caspase-3 and -9 (CASP3 and CASP9, respectively) to give rise to active enzymes mediating apoptosis (PubMed:9765264). Cleaves and activates CASP7 in response to bacterial infection, promoting plasma membrane repair (By similarity).