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EFFECTS OF ETHIDIUM BROMIDE ON THE CYTOCHROME CONTENT AND ULTRASTRUCTURE OF L CELL MITOCHONDRIA
Journal article   Open access   Peer reviewed

EFFECTS OF ETHIDIUM BROMIDE ON THE CYTOCHROME CONTENT AND ULTRASTRUCTURE OF L CELL MITOCHONDRIA

Gerald Soslau and Margit M. K. Nass
The Journal of cell biology, v 51(2), pp 514-524
01 Nov 1971
PMID: 5112654
url
https://doi.org/10.1083/jcb.51.2.514View
Published, Version of Record (VoR) Open

Abstract

Ethidium bromide intercalates between the bases of native DNA, resulting in several biological anomalies. The effects of ethidium bromide on the mitochondria of cultured mouse L cells were studied. At a concentration of 1 µg ethidium bromide/ml it was observed that concentrations of cytochromes a + a 3 and b decreased, a + a 3 more rapidly than b . In contrast, the concentration of cytochromes c 1 and c increased or remained the same as in control cells. Concomitant with the decrease of cytochromes a + a 3 and b was an enlargement of the mitochondria and a reduction in the cristae. The cristae that remained were abnormally organized. After prolonged treatment with ethidium bromide a second population of small, more normally organized mitochondria was apparent. These effects of ethidium bromide could be reversed.

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