Enkephalin-degrading activity in Xenopus laevis tadpoles and adults blood.
Neuropeptides
; 3(3): 213-22, 1983 Jan.
Article
in En
| MEDLINE
| ID: mdl-16229163
ABSTRACT
The enkephalin-degrading enzyme (alpha-aminoacyl-peptide hydrolase,EC 3.4.11.11) responsible for the rapid inactivation of enkephalins in human blood was purified and compared to the enkephalin-degrading system of Xenopus laevis tadpoles and adult blood. The specificity and the kinetic constants of the Xenopus enzyme(s) were determined after partial purification. Even if remarkable similarities between the Xenopus and the human enzyme exist, still they show differences in specificity towards peptides whose N-terminal is Phe. Amphibians are able to manufacture enkephalins and the present work shows that they are endowed with an enkephalin-degrading system comparable to the soluble one of human blood.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Xenopus laevis
/
Enkephalins
/
Aminopeptidases
/
Larva
Limits:
Animals
/
Humans
Language:
En
Journal:
Neuropeptides
Year:
1983
Type:
Article
Affiliation country:
France