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Is transcription of higher plant chloroplast ribosomal operons regulated by premature termination?
Author(s) -
Briat Jean François,
Dron Michel,
Mache Régis
Publication year - 1983
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(83)81149-1
Subject(s) - chloroplast , operon , biology , ribosomal rna , ribosome , chloroplast dna , genetics , transcription (linguistics) , microbiology and biotechnology , gene , rna , escherichia coli , linguistics , philosophy
Three stem‐loop structures (H1, H2, H3) can be formed in the leader transcript of the chloroplast rDNA of spinach, tobacco and maize. H2 and H3 partially overlap and cannot exist simultaneously. These potential hairpins lead us to postulate that higher plant chloroplast rDNA is regulated by premature termination. This mechanism could be controlled by the presence or absence of a ribosome translating an hypothetical leader peptide encoded in the rDNA leader sequence of these 3 higher plants.