Abstract
Polyadenylated and nonpolyadenylated mRNa from the red algae Cyanidium caldarium Geitler and Porphyridium aerugineum Geitler were translated in a cell-free system. The α-and β-subunits of phycocyanin and allophycocyanin and also both subunits of ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBPCase) were identified with the help of specific antibodies as translation products of non-polyadenylated mRNA. Both subunits of RuBPCase were synthesized with molecular weights in the range of the mature forms. This is in contrast to the findings with green algae and higher plants where the small subunits of RuBPCase are always made by polyadenylated mRNA in the form of a larger precursor molecule. We discuss our findings with regard to the systematic position of the algae used and the evolution of plastids.
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Abbreviations
- Poly(A)--RNA:
-
non-
- Poly(A)+-RNA:
-
polyadenylated RNA
- RuBPCase:
-
ribulose-1,5-bisphosphate carboxylase/oxygenase EC 4.1.1.39
- SDS:
-
sodium dodecyl sulfate
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Steinmüller, K., Kaling, M. & Zetsche, K. In-vitro synthesis of phycobiliproteids and ribulose-1,5-bisphosphate carboxylase by non-poly-adenylated-RNA of Cyanidium caldarium and Porphyridium aerugineum . Planta 159, 308–313 (1983). https://doi.org/10.1007/BF00393168
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DOI: https://doi.org/10.1007/BF00393168