Transcriptional origin of Euglena chloroplast tRNAs
Journal Article
·
· Proc. Natl. Acad. Sci. U.S.A.; (United States)
tRNA.DNA hybridization studies indicate that Euglena chloroplast tRNAs are transcriptional products of the chloroplast genome, which contains approximately 26 tRNA cistrons. Hybridization with purified chloroplast tRNA/sup Phe/ and tRNA/sup Asp/ shows that the chloroplast genome contains one cistron for each of these two species. No hybridization of chloroplast tRNA with nuclear DNA was observed. tRNAs from Euglena cytoplasm, Escherichia coli, and Agmenellum quadraduplicatum do not compete with chloroplast tRNA for hybridization with chloroplast DNA. Evidence is presented that photoinduction of chloroplast tRNAs is at the level of transcription rather than maturation of tRNA precursor molecules.
- Research Organization:
- Oak Ridge National Lab., TN
- OSTI ID:
- 7347578
- Journal Information:
- Proc. Natl. Acad. Sci. U.S.A.; (United States), Journal Name: Proc. Natl. Acad. Sci. U.S.A.; (United States) Vol. 73:6; ISSN PNASA
- Country of Publication:
- United States
- Language:
- English
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