Abstract
The heritability, subcellular location, and tissue distribution of liver protein alterations found in the two-dimensional electrophoresis patterns of 4 offspring from male mice treated with N-ethyl- N-nitrosourea (ENU) were studied. Mice homozygous for each of the 4 ENU-induced protein variants were found to be viable and fertile, although the number of homozygous offspring from crosses between heterozygous carriers of one variant (ENU 2) was less than that expected for a nondetrimental trait. Two of the proteins altered by ENU-induced mutations were associated with the crude mitochondrial fraction, another was found predominantly in the microsomal fraction, and the fourth was associated with the mitochondrial, microsomal, and cytosol fractions. All of the ENU-induced mutations affected proteins that were not liver-specific; i.e., the proteins were found in other tissues in addition to the liver.
Published Version
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