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. 1968 Apr;107(4):481–489. doi: 10.1042/bj1070481

The effect of ribonuclease on polysomes and ribosomes of bacteria and animal cells

M L Fenwick 1
PMCID: PMC1198691  PMID: 4173471

Abstract

The mildest treatment with ribonuclease that causes any disaggregation of the polysomes of Escherichia coli or HeLa cells simultaneously attacks the RNA of the constituent ribosomes. It is concluded that the susceptibility to ribonuclease of polysomes does not suggest that they are held together by a strand of messenger RNA. The RNA of the larger sub-unit of bacterial ribosomes has particularly sensitive regions resulting in a non-random degradation. The RNA of the smaller sub-unit of E. coli ribosomes is relatively resistant to ribonuclease attack. The same may be true of the respective sub-units of the intact HeLa-cell ribosome, but both sub-units become very sensitive to ribonuclease on dissociation from each other.

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Selected References

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