PMID: 6403543Apr 25, 1983Paper

Genetic control of lipid transport in mice. II. Genes controlling structure of high density lipoproteins.

The Journal of Biological Chemistry
A J LusisR C LeBoeuf

Abstract

Genetic factors controlling the structure of high density lipoproteins (HDL) in mice have been examined. Surveys of inbred strains of mice revealed genetic structural variations of the two major apolipoproteins of mouse HDL, apolipoproteins A-I and A-II. The structural variations alter the charge of the proteins as judged by isoelectric focusing of HDL under denaturing conditions. The structural variations are inherited as single Mendelian genes exhibiting co-dominant expression. The structural gene for mouse apolipoprotein A-II, designated Alp-2, resides on mouse chromosome 1, tightly linked to Ly-m20, a lymphocyte alloantigen locus. Previous studies, as well as our results, suggest that the structural gene for mouse apolipoprotein A-I, designated Alp-1, is on mouse chromosome 9. The genetic structural variation for apo-A-I results in a shift in the charge of the entire family of apo-A-I isoforms, indicating that they are all encoded by a common structural gene. The structure of intact HDL, examined primarily by electrophoretic techniques, exhibits numerous and complex phenotypes among different strains of mice. One variation, controlling the density and possibly the size of HDL, has been studied in two sets of recombinant inb...Continue Reading

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