Isolation and characterization of lipoprotein B from high-density human serum lipoproteins.
1. Lipoprotein B from female Lp(a)-lipoprotein-negative serum was isolated from the fraction of density 1.073-1.125 by using immunoadsorbent; 2.5mg of freeze-dried material was obtained from 100ml of serum from a fasting patient. 2. The hydrated density of this lipoprotein was found to be 1.084g/cm(3). A flotation rate F(1.200) of 9.4 and lipid/protein ratio 1.40 were found, similar to that of high-density (d 1.073-1.125) lipoprotein preparations. 3. From immunochemical and electrophoretic studies of the intact and totally delipidized lipoprotein B it was concluded that this lipoprotein represents a separate family within the high-density range of human serum lipoproteins. 4. The possibility that the isolated lipoprotein B is an artifact created by the isolation procedure is discussed.
D000327:Adsorption; D000596:Amino Acids / Q000032:analysis; D000906:Antibodies; D001797:Blood Protein Electrophoresis; D003720:Densitometry; D004591:Electrophoresis, Polyacrylamide Gel; D005215:Fasting; D005260:Female; D005612:Freeze Drying; D006801:Humans; D005779:Immunodiffusion; D008055:Lipids / Q000032:analysis; D008074:Lipoproteins / Q000097:blood*; D008075:Lipoproteins, HDL / Q000097:blood / Q000302:isolation & purification; D008077:Lipoproteins, LDL / Q000097:blood / Q000302:isolation & purification; D011506:Proteins / Q000032:analysis
D000596:Amino Acids; D000906:Antibodies; D008055:Lipids; D008074:Lipoproteins; D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; D011506:Proteins