苯乙醇胺N-甲基转移酶的物种特异性电荷形式。

Species-specific charge forms of phenylethanolamine N-methyltransferase.

作者信息

Park D H, Joh T H

出版信息

Brain Res. 1985 Oct 7;344(2):402-4. doi: 10.1016/0006-8993(85)90824-8.

Abstract

Isoelectric points (pI) of phenylethanolamine N-methyltransferase (PNMT) from two species, cow and rat, were determined by chromatofocusing. Bovine PNMT has 5 different charge isozymes ranging from 5.4 to 6.2. In contrast, rat PNMT has only a single charge form of pI 4.8. There is no common isoelectric point of PNMT from both species and there is no tissue variation in the isoelectric point.

摘要

通过色谱聚焦法测定了牛和大鼠这两个物种中苯乙醇胺N-甲基转移酶（PNMT）的等电点（pI）。牛的PNMT有5种不同的电荷同工酶，范围在5.4至6.2之间。相比之下，大鼠的PNMT只有一种pI为4.8的电荷形式。这两个物种的PNMT没有共同的等电点，且等电点不存在组织差异。