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Published February 1, 1974 | public
Journal Article Open

Identification of discrete polyadenylate-containing RNA components transcribed from HeLa cell mitochondrial DNA

Abstract

Polyacrylamide gel electrophoresis and sedimentation analysis under denaturing conditions of poly(A)-containing RNA from the polysome region of the sedimentation pattern of a HeLa-cell mitochondrial lysate has revealed the occurrence of a discrete RNA component, which sediments in the native state with a sedimentation constant of about 7 S. From the sedimentation behavior under native and denaturing conditions and the poly(A) content, a molecular weight of about 9 x 10(4) has been estimated for this component. RNA·DNA hybridization experiments have indicated that this component is coded for by the light strand of mitochondrial DNA. Evidence for the occurrence of a poly(A)-containing RNA component sedimenting at about 9 S and coded for by the heavy strand has also been obtained.

Additional Information

Copyright © 1974 by the National Academy of Sciences. Communicated by Jerome Vinograd, October 1, 1973. The help of Mrs. A. Drew and Miss G. Engel is gratefully acknowledged. Poly(dT)-cellulose was a gift of Dr. Joseph Kates and actinomycin D, a gift of Merck, Sharp & Dohme. These investigations were supported by a research grant from the U.S. Public Health Service (GM-11726).

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August 22, 2023
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October 13, 2023