The influence of microsomes and lipid rafts isolated from them on DNA import into potato (Solanum tuberosum L.) mitochondria was studied. Ultracentrifugation of microsomes treated with Triton X-100 revealed three opalescence zones containing rafts in 15%, 25%, and 35% sucrose gradients. When individual raft fractions were added to the mitochondrial DNA import system in organello, their ability to enhance DNA import activity to varying degrees (from 4 to 23 times, depending on their membrane origin) was established.
I. S. Kapustina (Wed,) studied this question.