Acid phospholipase A activities in rat hepatocytes.

Abstract:

:Cultured rat hepatocytes exhibit acid phospholipase A activity. On the basis of product formation from stereospecifically radiolabeled phosphatidylethanolamine substrates, phospholipases A1 and A2 have been identified with optimal activities at pH 4.5. According to subcellular fractionation studies, the acid phospholipases in hepatocytes appear to be located in the lysosomal compartment. Application of specific inhibitors of the biosynthesis, glycosylation, and translocation of lysosomal enzymes in hepatocyte cultures suggests a half-life of approx. 1 day for the acid lysosomal phospholipase A1. About the same value for the half-life was obtained for the lysosomal marker enzymes, acid phosphatase and beta-N-acetyl-D-hexosaminidase.

journal_name

FEBS Lett

journal_title

FEBS letters

authors

Kunze H,Löffler BM,Schmidt M

doi

10.1016/0014-5793(88)80062-0

subject

Has Abstract

pub_date

1988-08-29 00:00:00

pages

388-90

issue

2

eissn

0014-5793

issn

1873-3468

pii

0014-5793(88)80062-0

journal_volume

236

pub_type

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