ID 2.1.1.281 DE phenylpyruvate C(3)-methyltransferase. AN phenylpyruvate Cbeta-methyltransferase. AN phenylpyruvate methyltransferase. CA 3-phenylpyruvate + S-adenosyl-L-methionine = (3S)-2-oxo-3-phenylbutanoate CA + H(+) + S-adenosyl-L-homocysteine. CC -!- The enzyme from the bacterium Streptomyces hygroscopicus NRRL3085 is CC involved in synthesis of the nonproteinogenic amino acid (2S,3S)- CC beta-methyl-phenylalanine, a building block of the antibiotic CC mannopeptimycin. DR Q643C8, MPPJ_STRHY ; //