A soluble protein is imported into Euglena chloroplasts as a membrane-bound precursor.

@article{Sulli1996ASP,
  title={A soluble protein is imported into Euglena chloroplasts as a membrane-bound precursor.},
  author={Chidananda Sulli and Steven D. Schwartzbach},
  journal={The Plant cell},
  year={1996},
  volume={8 1},
  pages={
          43-53
        }
}
The Euglena precursor to the small subunit of ribulose-15-bisphosphate carboxylase/oxygenase (pSSU) is a polyprotein. To determine the transport route from cytoplasm to chloroplast, Euglena was pulse labeled with 35S-sulfate and the organelles were separated on sucrose gradients. After a pulse, pSSU was found in the endoplasmic reticulum (ER) and Golgi apparatus. During a chase, ER-and Golgi-localized pSSU decreased concomitant with the appearance of SSU in chloroplasts. SSU was not found in… CONTINUE READING

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