Linked Life Data

3572248

Source:http://linkedlifedata.com/resource/pubmed/id/3572248

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1987-5-28
pubmed:abstractText
The synthesis of apoB-100 and apoB-48 by rat liver was investigated by studying the apoB complement of very low density lipoproteins (VLDL) from hepatic perfusates and Golgi fractions. The relative amounts of apoB-100 and apoB-48 in perfusate and Golgi VLDL as determined by sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis were similar to those in serum VLDL. To investigate the relative rates of synthesis of the VLDL B proteins, rats were injected intraportally with tritiated amino acid, and hepatic Golgi and serum VLDL were isolated from 7.5 to 120 min later. In hepatic Golgi VLDL, apoB-100 and apoE were maximally labeled at 15 min after the tritiated amino acid pulse. In contrast, VLDL apoB-48 attained maximum radioactivity at 30 min after isotope injection. In serum VLDL, apoB-100 and apoE were maximally labeled at 30 min post-isotope injection, while activity in apoB-48 peaked at 60 min. The data suggest that the synthesis of the B proteins and incorporation into rat liver nascent VLDL are independently regulated. The differential labeling patterns of the VLDL B proteins may be explained by an intracellular pool of apoB-48 that is larger than that of apoB-100. An alternative explanation of the results is that apoB-100 is a precursor to apoB-48.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0022-2275
pubmed:author
pubmed:issnType
Print
pubmed:volume
28
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
207-15
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Differential labeling of rat hepatic Golgi and serum very low density lipoprotein apoprotein B variants.
pubmed:publicationType
Journal Article, In Vitro, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't