Isolation and properties of prophospholipase A2 and phospholipase A2 from horse pancreas and horse pancreatic juice.
Biochim Biophys Acta
; 491(1): 265-74, 1977 Mar 28.
Article
en En
| MEDLINE
| ID: mdl-849461
ABSTRACT
Two phospholipases A2 (EC 3.1.1.4) with different isoelectric points have been isolated from horse pancreas in high yield (880 mg/kg tissue). From pancreatic juice the more acidic species was isolated as the sole phospholipase A2. Upon tryptic activation the zymogens release a hepta- and pentapeptide, respectively from the N-terminal part of the protein giving rise to the formation of one single enzyme with a specific activity higher than that of pancreatic phospholipases A2 from other mammalian species. Horse phospholipase A2 differs from the porcine and bovine enzymes with respect to amino acid composition and kinetic properties. The sequence of the first 41 amino acid residues at the N-terminus has been determined by automatic Edman degradation.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Páncreas
/
Jugo Pancreático
/
Fosfolipasas
Límite:
Animals
Idioma:
En
Revista:
Biochim Biophys Acta
Año:
1977
Tipo del documento:
Article