Proteins
Curated comments from UniProt
Type | Comment | Proteins |
---|---|---|
HPT1_ARATH | function | Involved in the synthesis of tocopherol (vitamin E). Catalyzes the condensation of homogentisate and phytyl diphosphate to form dimethylphytylhydrquinone. Low activity with geranylgeranyl diphosphate as substrate, but no activity with farnesyl diphosphate or solanesyl diphosphate. Tocopherol functions to limit lipid oxidation during seed desiccation, quiescence and germination and early seedling development. Protects thylakoid membrane lipids from photooxidation and is required for low-temperature adaptation. |
HPT1_ARATH | pathway | Cofactor biosynthesis; tocopherol biosynthesis. |
A0A1P8B2S8_ARATH HPT1_ARATH | similarity | Belongs to the UbiA prenyltransferase family. |
Function
Gene Ontology
cellular component | |
---|---|
chloroplast membrane | ECO |
chloroplast | ECO |
molecular function | |
homogentisate phytyltransferase activity | ECO |
biological process | |
cell wall organization | ECO |
vitamin E biosynthetic process | ECO |
unsaturated fatty acid biosynthetic process | ECO |
response to temperature stimulus | ECO |
phloem sucrose loading | ECO |
regulation of defense response | ECO |