Endoplasmic reticulum-resident proteins are constitutively transported to vacuoles for degradation.

@article{Tamura2004EndoplasmicRP,
  title={Endoplasmic reticulum-resident proteins are constitutively transported to vacuoles for degradation.},
  author={Kentaro Tamura and Kenji Yamada and Tomoo Shimada and Ikuko Hara-Nishimura},
  journal={The Plant journal : for cell and molecular biology},
  year={2004},
  volume={39 3},
  pages={393-402}
}
Soluble endoplasmic reticulum (ER)-resident proteins have very long lives because of their ER residency. This residency depends largely on ER-retrieval signals at their C-terminus. We examined the long-term destiny of endogenous ER-resident proteins, a lumenal binding protein (BiP) and a protein disulfide isomerase (PDI), with cultured cells of Arabidopsis. ER residents, in contrast to vacuolar proteinases, were considerably degraded in cells at the stationary phase. A subcellular fractionation… CONTINUE READING

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