Abstract
Protomitochondria (PRM) — young organelles — were isolated from liver cells of young (1 month) and adult (9 months) rats. PRM were characterized by photometric and fluorimetric methods. It was found that the number of PRM of various diameters in young and adult rats differs. PRM and mitochondria (MCH) from young and adult rats differ significantly. It was detected by fluorescence of 1-anilinonaphtalene-8-sulfonate (ANS), indicating a different number of membrane binding sites for this probe. An increase of the cytochrome content was observed during ripening of PRM to MCH, more pronounced in young animals. In contrast, the amount of cytochromes in MCH decreases during maturation of young rats to adult rats. The obtained data suggest that massive transformation of PRM to MCH in the cells of young animals takes place, similar to the transformation in the cells of adult animals observed earlier.
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