Abstract
Polyprotein-type precursors have been reported for the nuclear-encoded proteins such as the small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and the apoproteins of light-harvesting chlorophyll-protein (LHC) in Euglena. We report here that the precursor of the extrinsic 30 kDa protein of photosystem II (PS II) encoded by nuclear DNA is not a polyprotein. The precursor was identified as a 45 kDa protein by immunoprecipitation of in vitro translation products of mRNA and by a pulse-chase experiment. It is probable that the structure of the precursor of the nuclear-encoded protein in Euglena chloroplast is closely related to the feature of assembly, as well as of transport, of the protein in chloroplast.
Original language | English |
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Pages (from-to) | 171-176 |
Number of pages | 6 |
Journal | Plant Molecular Biology |
Volume | 21 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 1 1993 |
Keywords
- Euglena gracilis Z
- chloroplast
- oxygen evolution
- photosystem II
- precursor protein
- protein transport
ASJC Scopus subject areas
- Agronomy and Crop Science
- Genetics
- Plant Science