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. 1967 Mar;102(3):684–690. doi: 10.1042/bj1020684

The site of synthesis of mitochondrial proteins in Krebs II ascites-tumour cells

D Haldar 1, K B Freeman 1,*, T S Work 1
PMCID: PMC1270315  PMID: 16742481

Abstract

At 22° in Earle's medium, Krebs cells synthesize proteins. After a brief `pulse' with [14C]valine followed by a `chase' of [12C]valine the radioactivity appears first in microsomes and is transferred after `chase' to the cell sap. Kinetics of labelling of the mitochondrial protein are different from that of either microsomal or cell-sap protein. When Krebs cells in buffer are mixed with ribonuclease in water the nuclease penetrates the cell membrane. The ribonuclease-treated cells are still viable but have lost most of their cytoplasmic ribosomes (electron micrograph). Such cells still synthesize mitochondrial protein at near normal rate but synthesis of microsomal protein is severely inhibited. The results indicate that some mitochondrial proteins are synthesized independently of the microsome–cell-sap system.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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