Cytidine-5'-diphosphate-1,2-diacyl-sn-glycerol import into mitochondria through mitochondrial membrane contact sites in permeabilized rat liver hepatocytes.
Biochem Biophys Res Commun
; 232(1): 261-5, 1997 Mar 06.
Article
en En
| MEDLINE
| ID: mdl-9125145
ABSTRACT
The location of cytidine-5'-diphosphate-1,2-diacylsn-glycerol import into mictochondria was examined in permeabilized rat liver hepatocytes. The model utilized the ability of intact mitochondria to freely import [14C]glycerol-3-phosphate. Import of cytidine-5'-diphosphate-1,2-diacyl-sn-glycerol was measured by the synthesis of phosphatidyl[14C]glycerol. Phosphatidyl [14C]glycerol was synthesized in a time- and concentration-dependent manner in the presence of cytidine-5'-diphosphate-1,2-diacyl-sn-glycerol. The presence of ATP in the incubations stimulated phosphatidyl[14C]glycerol formation. The presence of adriamycin, at concentrations that block import of proteins into mitochondria, inhibited the formation of phosphatidyl [14C]glycerol. In addition, adriamycin, inhibited in vitro biosynthesis of phosphatidyl[14C]glycerol in mitochondrial but not microsomal fractions. 1,4-Dinitrophenol, which may decrease the number of mitochondrial inner and outer membrane contact sites, inhibited formation of phosphatidyl[14C]glycerol in permeabilized hepatocytes. The results demonstrate that cytidine-5'-diphosphate-1,2-diacyl-sn-glycerol may be imported into mitochondria through inner and outer mitochondrial membrane contact sites in hepatocytes.
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Bases de datos:
MEDLINE
Asunto principal:
Mitocondrias Hepáticas
/
Azúcares de Nucleósido Difosfato
Límite:
Animals
Idioma:
En
Revista:
Biochem Biophys Res Commun
Año:
1997
Tipo del documento:
Article
País de afiliación:
Canadá