Cox R A, Ford P J, Pratt H
Biochem J. 1970 Sep;119(2):161-4. doi: 10.1042/bj1190161.
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.
单核糖体占非洲爪蟾卵巢核糖体组分的90%或更多。这些核糖体在无细胞蛋白质合成系统中具有较低的内源活性,但在与哺乳动物或细菌系统报道的条件相当的情况下,在聚U存在时能合成聚苯丙氨酸。这些观察结果与核糖体缺乏mRNA的观点一致。