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  • Title: Genetic expression of beta-mannosidase activity in different tissues of mice.
    Author: Seyedyazdani R.
    Journal: Biochem Genet; 1975 Apr; 13(3-4):247-54. PubMed ID: 238502.
    Abstract:
    Beta-Mannosidase activity of liver, kidney, and spleen of two inbred strains of mice and their crosses has been assayed with the synthetic aubstrate p-nitrophenyl-beta-d-mannoside. Activity is low in C57BL/Kl mice and high in DBA/2/Kl mice. Hybrid animals have intermediate levels of beta-mannosidase activity. Segregation of enzyme activities occurs in the F-2 and backcross generations, and there are good correlations between acitities in the three tissuses of F-2 and backcross animals. Some evidence points to a single gene difference in crosses between C57BL and DBA with respect to this mannosidase variation. Curves for enzyme activities at different substrate concentrations and pHs obtained with preparations from DBA and C57BL mice show some differences. These are interpreted as a possible strain variation in a structural gene for this enzyme.
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