Linked Life Data

3514123

Source:http://linkedlifedata.com/resource/pubmed/id/3514123

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1986-5-14
pubmed:abstractText
The steps involved in the initial assembly of apolipoproteins and lipids into supramolecular arrays (nascent lipoprotein particles) are largely unknown. Examination of the proteolytic processing and compartmentalization of the primary translation products of apolipoprotein mRNAs represents one approach to deciphering the molecular details of lipoprotein assembly. The structures of the primary translation products of seven mammalian apolipoprotein mRNAs has been determined in the past several years. The organization of apolipoprotein signal peptides is typical of eukaryotic prepeptides, although an unusual degree of sequence conservation is present among the signal segments of apo AI, AIV, and E. For those apolipoprotein sequences studied in detail, SRP-dependent cotranslational translocation and proteolytic processing appears to be highly efficient and results in sequestration of the processed protein within the lumen of the endoplasmic reticulum (ER). However the mechanism by which these lipid-binding proteins avoid arrest during their translocation through the lipid bilayer of the ER membrane remains obscure. The two principal human HDL apolipoproteins undergo novel extracellular post-translational proteolytic processing, which results in removal of nonhomologous propeptides. The proteases responsible for proapo AI and AII processing appear to be different. The processing of these proapolipoproteins provides a potential series of steps for regulating the ordered assembly of HDL constituents.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0045-6411
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
37-71
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:3514123-Animals, pubmed-meshheading:3514123-Apolipoproteins, pubmed-meshheading:3514123-Biological Transport, pubmed-meshheading:3514123-Cell Compartmentation, pubmed-meshheading:3514123-Endoplasmic Reticulum, pubmed-meshheading:3514123-Golgi Apparatus, pubmed-meshheading:3514123-Humans, pubmed-meshheading:3514123-Intracellular Membranes, pubmed-meshheading:3514123-Lipid Metabolism, pubmed-meshheading:3514123-Lipoproteins, pubmed-meshheading:3514123-Macromolecular Substances, pubmed-meshheading:3514123-Peptide Hydrolases, pubmed-meshheading:3514123-Protein Biosynthesis, pubmed-meshheading:3514123-Protein Processing, Post-Translational, pubmed-meshheading:3514123-Protein Sorting Signals, pubmed-meshheading:3514123-RNA, Messenger, pubmed-meshheading:3514123-Structure-Activity Relationship
pubmed:year
1986
pubmed:articleTitle
Proteolytic processing and compartmentalization of the primary translation products of mammalian apolipoprotein mRNAs.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Review