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XB-ART-33646
Biochem J 1970 Sep 01;1192:161-4.
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Ribosomes from Xenopus laevis ovaries and the polyuridylic acid-directed biosynthesis of polyphenylalanine.

Cox RA , Ford PJ , Pratt H .


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Single ribosomes account for 90% or more of the ribosome fraction of Xenopus laevis ovaries. These ribosomes have low endogenous activity in a cell-free protein-synthesizing system but synthesize polyphenylalanine in the presence of poly U under conditions comparable with those reported for mammalian or bacterial systems. These observations agree with the view that the ribosome is deficient in mRNA.

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References [+] :
ARNSTEIN, Function of polyuridylic acid and ribonucleic acid in protein biosynthesis by ribosomes from mammalian reticulocytes. 1962, Pubmed