PPH — Beta vulgaris subsp. vulgaris

Summary

BvPPH (BVRB_6G129050) on sugar beet chromosome 6 encodes an alpha/beta hydrolase domain-containing protein with epoxide hydrolase-like features and autophagy adaptor activity. The gene is associated with hydrolase and protein-binding functions, and with biological processes including protein targeting to the vacuole during autophagy, secretion, and cell death. Its product localises to multiple cellular compartments, notably the thylakoid, chloroplast envelope, plastid, endoplasmic reticulum, and nucleus. BvPPH is associated with tocopherol biosynthesis and thermotolerance. Studies of the Arabidopsis relative ATI2 link the family to autophagy-related vacuolar targeting, while sequence similarity to related genes in other species connects the family to leaf thickness, lycopene, carotenoid and chlorophyll content, fruit colour, photochemical quenching, seed maturation, and protein content.