Multiple forms of human brain monoamine oxidase: substrate specificities
نویسندگان
چکیده
منابع مشابه
Multiple Forms of Rat Liver Monoamine Oxidase
1. Treatment of a partly purified preparation of rat liver monoamine oxidase with the chaotropic agent sodium perchlorate caused the enzyme to migrate as a single band of activity on polyacrylamide-gel electrophoresis, whereas the untreated enzyme separated into a number of bands. 2. Treatment with the chaotropic agent caused no loss ofenzyme activity towards benzylamine, dopamine or tyramine. ...
متن کاملVisualization of monoamine oxidase in human brain.
11973 Monoamine oxidase (MAO; EC: 1.4.3.4) is a flavin containing enzyme which exists in two subtypes, MA0 A and MA0 B. MA0 A and B are different gene products and they also differ in their substrate and inhibitor selectivities and their cellular localizations. In human brain MA0 B predominates (B:A = 4:l) and is largely compartmentalized in cell bodies of serotonergic neurons and in glia. Many...
متن کاملSignificance of multiple forms of brain monoamine oxidase in situ as probed by electron spin resonance.
Spin-labeled hydroxyamphetamine, a competitive reversible inhibitor of brain monoamine oxidase, has been shown to be useful as an electron spin resonance (ESR) probe of the microenvironment of the active sites of the possible monoamine oxidase multiple forms. The ESR spectrum of spin-labeled hydroxyamphetamine was strongly quenched upon binding to the enzyme. The conformation of the active site...
متن کاملThe Role of Phospholipid in the Monoamine Oxidase * Multiple Functional Forms of Brain
The nature of phospholipid requirement and lipidprotein interactions for the multiple functional forms of monoamine oxidase was investigated by rebinding the purified phospholipid to a lipid-depleted brain mitochondrial preparation. It was found that phosphatidylinositol uniquely stimulated the monoamine oxidase A activity to 80% over that in the original intact mitochondria. Other negatively c...
متن کاملHuman Plasma Monoamine Oxidase
Although this human plasma enzyme was shown (1) to have certain characteristics in common with plasma amine oxidases from other mammals (2-6), it could be distinguished from these other plasma enzymes by its substrate specificity. During studies relating to the substrate specificity of the human enzyme, the oxidation of aliphatic amines was noted to have a number of distinctive kinetic features...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1970
ISSN: 0306-3283
DOI: 10.1042/bj1170043pa