In vitro SYNTHESIS OF DIFFERENT CATEGORIES OF SPECIFIC PROTEIN BY MEMBRANE-BOUND AND FREE RIBOSOMES
Author(s) -
M. Clelia Ganoza,
Curtis A. Williams
Publication year - 1969
Publication title -
proceedings of the national academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.63.4.1370
Subject(s) - ribosome , endoplasmic reticulum , cytoplasm , organelle , protein biosynthesis , cell free system , membrane protein , biochemistry , in vitro , biology , vesicle , membrane , chemistry , microbiology and biotechnology , rna , gene
The free and membrane-bound ribosomes of hepatic cells were isolated and used to program protein synthesis in cell-free extracts. Immuno-electrophoretic and radioautographic analysis of the products showed that the membrane-bound ribosomes synthesized serum proteins, whereas ribosomes free of endoplasmic reticulum synthesized specific nonserum liver proteins. After synthesis, the serum proteins remained associated with membrane vesicles, whereas the other liver proteins were found free of cytoplasmic organelles.
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