Mitochondrial RNAs are abundant in the poly(A)+RNA population of early frog embryos
1981; Elsevier BV; Volume: 86; Issue: 2 Linguagem: Inglês
10.1016/0012-1606(81)90208-6
ISSN1095-564X
AutoresMark B. Dworkin, Brian K. Kay, John W.B. Hershey, Igor B. Dawid,
Tópico(s)Analytical Chemistry and Sensors
ResumoMitochondrial sequences have been identified within a set of cloned complementary DNAs that had been copied from poly(A)+RNA of two embryonic stages of Xenopus laevis (Dworkin and Dawid, 1980, Dworkin and Dawid, 1980, Develop. Biol. 76, 435–448 and 449–464). Mitochondrial sequences were found to be highly abundant in gastrula stage poly(A)+RNA sequences; in tadpole RNA their relative abundance is reduced severalfold. Mitochondrial sequences account for the most abundant poly(A)+RNA molecules in the gastrula population. The high abundance of mitochondrial RNA in early stages may be the consequence of the accumulation of large numbers of mitochondria in the egg.
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