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Postnatal changes in rhodamine‐123 stained mitochondrial populations are sensitive to protein synthesis inhibitors but mimicked in vitro by atp
Author(s) -
Almeida Angeles,
Lopez-Mediavilla Casilda,
Orfao Alberto,
Medina José M.
Publication year - 1994
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(94)00345-9
Subject(s) - cycloheximide , in vivo , mitochondrion , rhodamine 123 , population , biology , in vitro , protein biosynthesis , incubation , biochemistry , microbiology and biotechnology , medicine , genetics , environmental health , multiple drug resistance , antibiotics
The incubation of term fetus mitochondria with ATP mimicked in vitro the increase in the respiratory control index and in the percentage of the rhodamine‐123‐low fluorescence population that occurred in vivo immediately after birth, suggesting that both phenomena are closely associated. The administration of streptomycin inhibited the increase in the percentage of the low fluorescence population that occurred immediately after birth, while the administration of cycloheximide even reversed these changes. These results suggest that the in vivo interconversion between mitochondrial forms depends on both cytosolic and mitochondrial protein synthesis.