物理性质

性状：冻干粉末。
溶解性：溶于水。

作用与用途

Biochem/physiol Actions Major degradative enzyme for catecholamine neurotransmitters; methylates the o-hydroxyl group
Unit Definition One unit will produce 1.0 nanomole of total O-methylated products from 3,4 dihydroxyacetophenone per hour at pH 7.6 at 37 °C.
Previous radioactive assay unit definition: One unit will catalyze the methylation of 1.0 nanomole of protocatechuic acid per hr at pH 7.9 at 37°C using S-adenosyl-L-[methyl-14C]methionine as the methyl donor. (~6 radioactive units equal one new unit).
Physical form Lyophilized powder containing phosphate buffer and dithiothreitol

贮存方法

-20°C密闭，避光，通风干燥处

生态学数据

通常对水体是稍微有害的，不要将未稀释或大量产品接触地下水，水道或污水系统，未经政府许可勿将材料排入周围环境。