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The in vitro reassembly of rough endoplasmic reticulum: Ribosome binding capacity

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Abstract

Rough endoplasmic reticulum membranes were dissolved in 1% deoxycholate and the deoxycholate was then dialysed out for five days. Well-defined bilayer vesicles were formed only if the dialysis was performed at room temperature for the first six hours. The vesicles were separated into a pelleted fraction (Fraction I) and a fluffy layer (Fraction II) by centrifugation. As measured by amino acid incorporation ability, Fraction II bound polysomes, while Fraction I did not. When smooth endoplasmic reticulum was assembled, it was found that Fraction II so derived had a polysome binding capacity which was more sensitive to increased KCl concentrations (25 mM–100 mM KCl) and that it bound significantly more monosomes than the corresponding fraction derived from rough membranes. The SDS-polyacrylamide polypeptide patterns of the various fractions were compared.

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Authors and Affiliations

  1. Department of Biological Chemistry, The Hebrew University of Jerusalem, Jerusalem, Israel

    A. M. Feigenbaum, N. De Groot & A. A. Hochberg

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  1. A. M. Feigenbaum
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  2. N. De Groot
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  3. A. A. Hochberg
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Feigenbaum, A.M., De Groot, N. & Hochberg, A.A. The in vitro reassembly of rough endoplasmic reticulum: Ribosome binding capacity. Mol Biol Rep 4, 111–115 (1978). https://doi.org/10.1007/BF00775971

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  • DOI: https://doi.org/10.1007/BF00775971

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