title: A bacterial repressor protein or a yeast transcriptional terminator can block upstream activation of a yeast gene.
mesh_terms: D001426:Bacterial Proteins / Q000502:physiology; D005800:Genes, Fungal; D012097:Repressor Proteins / Q000502:physiology*; D014157:Transcription Factors / Q000502:physiology*
chemical_list: D001426:Bacterial Proteins; D012097:Repressor Proteins; D014157:Transcription Factors