CP1 — Brassica oleracea var. botrytis

Summary

BoCP1 (CP1) on cauliflower chromosome 2 encodes a papain-like cysteine peptidase, possessing cysteine-type peptidase activity, thiol endopeptidase activity, and protease activity, and is also associated with protein binding and disulphide bond formation. The gene is linked to proteolysis, regulation of programmed cell death, and responses to ER stress and zinc. It has been connected to pollen and flower development, cell differentiation, and embryo development. Associations with seed growth and development, drought tolerance, and salt tolerance have been observed, along with increased root elongation, dry weight, and proline accumulation. The encoded protein localises to the vacuole, lysosome, ER lumen, thylakoid, and cytoplasmic vesicles. Related genes in other species link the family to programmed cell death and oxidative protein folding, while insect resistance has been observed for related genes in other species.