Protein
2-methyl-6-phytyl-1,4-hydroquinone methyltransferase 2, chloroplastic
Organism
Oryza sativa subsp. japonica
Function
Involved in a key methylation step in both tocopherols (vitamin E) and plastoquinone synthesis. Catalyzes the conversion of 2-methyl-6-phytyl-1,4-hydroquinone (MPBQ) to 2,3-dimethyl-6-phytyl-1,4-hydroquinone (DMPQ, a substrate for tocopherol cyclase), and 2-methyl-6-solanyl-1,4-benzoquinone (MSBQ) to plastoquinone (By similarity).
Similarity
Belongs to the class I-like SAM-binding methyltransferase superfamily. MPBQ/MBSQ MT family.
Sequence
MAMASSAYAPAGGVGTHSAPGRIRPPRGLGFSTTTTKSRPLVLTRRGGGGGNISVARLRCAASSSSAAARPMSQPRFIQHKKEAFWFYRFLSIVYDHVINPGHWTEDMRDDALEPADLYSRKLRVVDVGGGTGFTTLGIVKRVDPENVTLLDQSPHQLEKAREKEALKGVTIMEGDAEDLPFPTDTFDRYVSAGSIEYWPDPQRGIKEAYRVLRLGGVACMIGPVHPTFWLSRFFADMWMLFPKEEEYIEWFKKAGFKDVKLKRIGPKWYRGVRRHGLIMGCSVTGVKREHGDSPLQLGPKVEDVSKPVNPITFLFRFLMGTICAAYYVLVPIYMWIKDQIVPKGMPI