Lysoplasmalogenase--a microsomal enzyme from rat brain.
J Neurochem
; 39(3): 693-9, 1982 Sep.
Article
em En
| MEDLINE
| ID: mdl-7097275
ABSTRACT
An enzymic activity of rat brain that liberates radioactive free aldehydes from 1-[1-14C]alk-1'-enyl-sn-glycero-3-phosphoethanolamine (lyso-plasmalogen) is described. It was present mainly in microsomal fractions (crude) of brains of rats of different ages. The highest specific enzyme activity was found in 21-day-old animals. The formation of free aldehyde was dependent on the amount of enzyme protein as well as the amount of substrate added, and was linear to the incubation time up to 60 min. The pH optimum was between 7.1 and 7.3. Bivalent cations (Mg2+, Ca2+) and detergents inhibited the reaction. However, the same cell fractions as well as extracts of acetone-dried powder of brain from young or old rats possessed no enzyme activity for liberating the aldehyde from the acylated substrates 1-[1-14C]alk-1'-enyl-2-acyl-sn-glycero-3-phosphoethanolamine (plasmalogen) or plasmalogen of ox corpus callosum.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Encéfalo
/
Hidrolases
/
Microssomos
Limite:
Animals
Idioma:
En
Revista:
J Neurochem
Ano de publicação:
1982
Tipo de documento:
Article