Serpin-ZX

UniProtKB accession:  Q9S7T8

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UniProtKB description:  Inhibits metacaspase-9 (MC9) cysteine protease. Functions through cleavage of its reactive center loop and covalent binding to MC9. Involved in the control of elicitor-stimulated programmed cell death (PCD). During infection by the necrotrophic fungal pathogen Botrytis cinerea, functions to protect cells by limiting the PCD-promoting protease RD21A activity that is released from the ER body or vacuole to the cytoplasm (PubMed:23398119). Involved in the control of water stress-induced cell death by limiting the pro-death protease RD21A activity that is released from the vacuole to the cytoplasm (PubMed:26884487).