Abstract
Non-histone chromatin proteins prepared from a normal rat cell line (No. 7) and the cells transformed with Rous sarcoma virus (RSV) (s7-1) were compared by means of reverse-phase high performance liquid chromatography (reverse-phase HPLC), followed by SDS-polyacrylamide gel electrophoresis (SDS-PAGE). The results revealed that several proteins were specifically present in the transformed cell chromatin. A specific non-histone chromatin protein with a molecular weight of 38,000 daltons, 38K protein, was purified as a single species from s7-1 cells. This 38K protein was only detected in the transformed state of the cells transformed with a temperature-sensitive (ts) mutant of the src gene and the mutant cells which showed temperature sensitivity as to the transformation with wild type RSV.
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