Incorporation of amino acids into protein by cell-free extracts of penicillium chrysogenum |
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Authors: | C. W. Haidle J. M. Kornfeld S. G. Knight |
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Affiliation: | (1) Department of Bacteriology, University of Wisconsin, Madison, Wisconsin, USA;(2) Present address: Department of Microbiology, Univ. of Texas, Austin, Texas.;(3) Present address: Bacteriology Department, Univ. of Connecticut, Storrs, Conn. |
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Abstract: | Summary The preparation of ribosomal particles from P. chrysogenum has been described. After correction to 20°C and extrapolation to infinite dilution, they had sedimentation coefficients of approximately 80S, 60 S, and 40 S. The washed ribosomes plus purified supernatant fraction, KCl and sucrose incorporated C14-l-amino acids into protein. There was no stimulation of incorporation by ATP, GTP, CTP, UTP, or Mg ions. Incorporation was inhibited by streptomycin and chloramphenicol but not by ribonuclease.The amino acid incorporating system from P. chrysogenum did not resemble bacterial and yeast systems in many respects and reasons for this are discussed. |
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