S-adenosyl-L-methionine: (S)-scoulerine 9-O-methyltransferase, a highly stereo- and regio-specific enzyme in tetrahydroprotoberberine biosynthesis

Mümmler, S.; Rüffer, Martina; Nagakura, Naotaka and Zenk, Meinhart H. (1985): S-adenosyl-L-methionine: (S)-scoulerine 9-O-methyltransferase, a highly stereo- and regio-specific enzyme in tetrahydroprotoberberine biosynthesis. In: Plant Cell Reports, Vol. 4, No. 1: pp. 36-39.

Abstract

Suspension cultures of Berberis species are useful sources for the detection and isolation of a new enzyme which transfers the methyl group from S-adenosyl-L-methionine specifically to the 9-position of the (S)-enantiomer of scoulerine, producing (S)-tetrahydrocolumbamine. The enzyme was enriched 27-fold; it is not particle bound, has a pH optimum of 8.9, a molecular weight of 63 000 and shows a high degree of substrate specificity.

• Item Type: Article
• Subjects: Chemistry and Pharmacy
• Dewey Classification: 600 Natural sciences and mathematics; 600 Natural sciences and mathematics > 540 Chemistry and allied sciences