alexa Endoplasmic reticulum: a metabolic compartment.
Molecular Biology

Molecular Biology

Journal of Cytology & Histology

Author(s): Csala M, Bnhegyi G, Benedetti A

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Abstract Several biochemical reactions and processes of cell biology are compartmentalized in the endoplasmic reticulum (ER). The view that the ER membrane is basically a scaffold for ER proteins, which is permeable to small molecules, is inconsistent with recent findings. The luminal micro-environment is characteristically different from the cytosol; its protein and glutathione thiols are remarkably more oxidized, and it contains a separate pyridine nucleotide pool. The substrate specificity and activity of certain luminal enzymes are dependent on selective transport of possible substrates and co-factors from the cytosol. Abundant biochemical, pharmacological, clinical and genetic data indicate that the barrier function of the lipid bilayer and specific transport activities in the membrane make the ER a separate metabolic compartment. This article was published in FEBS Lett and referenced in Journal of Cytology & Histology

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