. . . . . . . "NCI: This gene plays a critical role in transcriptional regulation and cellular growth.,NCI: An oncogene from an avian sarcoma virus. The protein it encodes dimerizes with fos to form the transcription factor AP1." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .