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. 1984 Jan;81(2):419–423. doi: 10.1073/pnas.81.2.419

Association of cytokeratin p39 with DNA in intact Novikoff hepatoma cells.

W S Ward, W N Schmidt, C A Schmidt, L S Hnilica
PMCID: PMC344688  PMID: 6198648

Abstract

The relationship between the rat tumor-associated cytokeratin p39 (Mr 39,000) and cellular DNA has been studied in intact cells. Using a DNA-protein crosslinking technique, incubation with cis-dichlorodiammineplatinum, we present evidence for the association of p39 with DNA in intact Novikoff ascites hepatoma cells. The cells were treated with cis-dichlorodiammineplatinum and solubilized in NaDodSO4-containing buffer, and the DNA was pelleted by high-speed centrifugation. By immunotransfer analysis, the cytokeratin was found in the DNA pellet of the crosslinked samples while absent from the controls. This result was further substantiated by CsCl density-gradient centrifugation. Collectively, these results suggest a cytokeratin-DNA association at the filament binding sites on or near the nuclear lamina.

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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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