Apolipoprotein B is a calcium binding protein.

Abstract:

:Human hepatocarcinoma Hep G2 cells were grown in culture medium containing [45Ca2+]. The secreted lipoproteins of d less than 1.063 g/ml and d 1.063-1.21 g/ml were isolated from the culture media and analyzed by 3.3% and 7% SDS-polyacrylamide gel electrophoresis. Radioactivity profiles of [45Ca] from the gels showed that the peak of radioactivity corresponded to the apolipoprotein B band. The molar ratio of the incorporated [45Ca2+] and apolipoprotein B was close to unity. No radioactivity was found associated with any other secreted apolipoproteins. To confirm these findings, apolipoprotein B-containing lipoproteins were precipitated with anti-apolipoprotein B and high density lipoproteins were precipitated with anti-apolipoprotein A-I. Only the former precipitate was radioactive. These results suggest that apolipoprotein B is a calcium binding protein.

authors

Dashti N,Lee DM,Mok T

doi

10.1016/0006-291x(86)91237-4

subject

Has Abstract

pub_date

1986-05-29 00:00:00

pages

493-9

issue

1

eissn

0006-291X

issn

1090-2104

pii

0006-291X(86)91237-4

journal_volume

137

pub_type

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