Protein
2-methyl-6-phytyl-1,4-hydroquinone methyltransferase
Organism
Synechocystis sp. (strain PCC 6803 / Kazusa)
Function
Involved in a key methylation step in both tocopherol (vitamin E) and plastoquinone synthesis. Catalyzes the conversion of 2-methyl-6-phytyl-1,4-hydroquinol (MPBQ) to 2,3-dimethyl-6-phytyl-1,4-hydroquinol (DMPQ, a substrate for tocopherol cyclase), and 2-methyl-6-solanyl-1,4-benzoquinol (MSBQ) to plastoquinol.
Similarity
Belongs to the class I-like SAM-binding methyltransferase superfamily. gTMT family.
Sequence
MPEYLLLPAGLISLSLAIAAGLYLLTARGYQSSDSVANAYDQWTEDGILEYYWGDHIHLGHYGDPPVAKDFIQSKIDFVHAMAQWGGLDTLPPGTTVLDVGCGIGGSSRILAKDYGFNVTGITISPQQVKRATELTPPDVTAKFAVDDAMALSFPDGSFDVVWSVEAGPHMPDKAVFAKELLRVVKPGGILVVADWNQRDDRQVPLNFWEKPVMRQLLDQWSHPAFASIEGFAENLEATGLVEGQVTTADWTVPTLPAWLDTIWQGIIRPQGWLQYGIRGFIKSVREVPTILLMRLAFGVGLCRFGMFKAVRKNATQA