Pancreatic lipase-related protein type 1: a double mutation restores a significant lipase activity.
Biochem Biophys Res Commun
; 246(2): 513-7, 1998 May 19.
Article
en En
| MEDLINE
| ID: mdl-9610393
Besides the active pancreatic lipase (PL) which plays a major role in dietary fat digestion, the presence of a pancreatic lipase related protein 1 (PLRP1) displaying a very low lipolytic activity has been reported in vertebrates. It has been suggested that the reduced lipolytic activity of PLRP1 results from specific features of the N-terminal domain of the protein. Therefore, based on sequence comparison between PL and PLRP1 and modelling experiments, several residues located in the vicinity of the active site pocket of both enzymes have been mutated. In this paper, we report that, as regards to PL, two substitutions in positions 179 and 181 in PLRP1 account for the very low lipolytic activity of the protein. Indeed, substituting these residues (V179 and A181) in PLRP1 for those found in PL (A179 and P181), restores a significant lipolytic activity for PLRP1.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Páncreas
/
Mutación Puntual
/
Lipasa
Límite:
Animals
Idioma:
En
Revista:
Biochem Biophys Res Commun
Año:
1998
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
Estados Unidos