Q8VWJ1
UniProt ID : Q8VWJ1
NCBI Taxonomy : 3702
Protein names : Homogentisate phytyltransferase 1, chloroplastic
Organism : Arabidopsis thaliana
Taxonomy : Eukaryota
Subcellular locations :Plastid;
Length : 393
Gene Ontology :
GO IDOntologyDefinitionEvidence
GO:0009507Cellular ComponentchloroplastISS
GO:0009535Cellular Componentchloroplast thylakoid membraneIEA
GO:0016021Cellular Componentintegral to membraneIEA
GO:0010176Molecullar Functionhomogentisate phytyltransferase activityIDA
GO:0071555Biological Processcell wall organizationIMP
GO:0009915Biological Processphloem sucrose loadingIMP
GO:0031347Biological Processregulation of defense responseIMP
GO:0009266Biological Processresponse to temperature stimulusIMP
GO:0006636Biological Processunsaturated fatty acid biosynthetic processIMP
GO:0010189Biological Processvitamin E biosynthetic processIMP
Catalytic activity :All-trans-phytyl diphosphate + homogentisate = diphosphate + 2-methyl-6-phytyl-1,4-benzoquinol + CO2.
Sequences : MESLLSSSSLVSAAGGFCWKKQNLKLHSLSEIRVLRCDSSKVVAKPKFRNNLVRPDGQGSSLLLYPKHKSRFRVNATAGQPEAFDSNSKQKSFRDSLDAFYRFSRPHTVIGTVLSILSVSFLAVEKVSDISPLLFTGILEAVVAALMMNIYIVGLNQLSDVEIDKVNKPYLPLASGEYSVNTGIAIVASFSIMSFWLGWIVGSWPLFWALFVSFMLGTAYSINLPLLRWKRFALVAAMCILAVRAIIVQIAFYLHIQTHVFGRPILFTRPLIFATAFMSFFSVVIALFKDIPDIEGDKIFGIRSFSVTLGQKRVFWTCVTLLQMAYAVAILVGATSPFIWSKVISVVGHVILATTLWARAKSVDLSSKTEITSCYMFIWKLFYAEYLLLPFLK
Function :Involved in the synthesis of tocopherol (vitamin E). Catalyzes the condensation of homogentisate and phytyl diphosphate to form dimethylphytylhydrquinone. 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.