An activator protein enhances transcription by binding to the DNA molecule upstream of the promoter to enhance the binding of the RNA polymerase to the promoter.

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An activator protein is a transcription factor that binds to specific DNA sequences (usually upstream of the promoter) to enhance transcription by facilitating the binding of RNA polymerase to the promoter. This is achieved through interactions between the activator protein and the basal transcriptional machinery, such as recruitment of co-activators or alteration of chromatin structure.

An Activator Protein Enhances Transcription by Binding to the DNA