Two sequence-specific binding proteins from the promoter region of the c-Ha-ras-I oncogene.

The role of sequence-specific binding proteins in transcriptional control in higher eukaryotes is unclear. We have investigated the control region of the c-Ha-ras-I protooncogene containing upstream sequences from the transcriptional initiation point. Two proteins, which bind these sequences, with molecular weights of 20 K and 43 K were found. The possible role in the process of transformation is discussed.