Precursor of the nuclear-encoded extrinsic 30 kDa protein in photosystem II of Euglena gracilis Z is not a polyprotein

Ikuo Kuroda, Junko Inagaki, Yasusi Yamamoto

Research output: Contribution to journalArticle

6 Citations (Scopus)


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 languageEnglish
Pages (from-to)171-176
Number of pages6
JournalPlant Molecular Biology
Issue number1
Publication statusPublished - Jan 1 1993



  • Euglena gracilis Z
  • chloroplast
  • oxygen evolution
  • photosystem II
  • precursor protein
  • protein transport

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Genetics
  • Plant Science

Cite this