Promoter:Promoters are DNA sequences located near transcription start sites that help initiate gene expression by binding to enzymes involved in transcription.
Transcription Factors:Transcription factors are proteins that bind to promoter regions and regulate gene expression by either promoting or inhibiting transcription.
Enhancer Regions: Enhancer regions are specific DNA sequences that can be located far away from the transcription start site but still play a role in regulating gene expression by interacting with promoters.