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Effects of guanidine hydrochloride on human plasma high density lipoproteins.

Authors :
Nichols AV
Gong EL
Blanche PJ
Forte TM
Anderson DW
Source :
Biochimica et biophysica acta [Biochim Biophys Acta] 1976 Sep 28; Vol. 446 (1), pp. 226-39.
Publication Year :
1976

Abstract

Denaturation of human plasma high density lipoproteins during ultracentrifugation in guanidine-HCl is characterized by: dissociation of apoA-I, in the range of 2-3 M guanidine-HCl, and dissociation of apoA-I and apoA-II in 5-6 M guanidine-HCl. Denaturation of high density lipoprotein species, during a sequence of timed exposure to guanidine-HCl followed first by removal of the denaturant by dialysis and then by ultracentrifugation, is characterized by:dissociation of lipid-poor apoA-I, which follows a time course similar to denaturation-related changes in reported spectroscopic parameters; and apparent formation of lipoprotein aggregation products depleted in apoA-I and relatively enriched in apoA-II. These studies indicate differential properties of the major apoproteins in stabilizing high density lipoprotein structure and characterize a mode of lipoprotein transformation and degradation which apparently results from apoprotein dissociation coupled with aggregation of denatured lipoprote species.

Details

Language :
English
ISSN :
0006-3002
Volume :
446
Issue :
1
Database :
MEDLINE
Journal :
Biochimica et biophysica acta
Publication Type :
Academic Journal
Accession number :
184833
Full Text :
https://doi.org/10.1016/0005-2795(76)90113-6