Where is an operator located in a prokaryote DNA? How does an operator regulate gene expression at transcriptional level in a prokaryote? Explain [NO LINKS PLEASE]
Dear Student
An operator is located slightly downstream of the promoter. Operator is a region of DNA to which transcriptional factor attaches to regulate gene expression by repressing it. Some regulatory proteins are repressors that bind to pieces of DNA called operators. When bound to its operator, a repressor reduces transcription (e.g., by blocking RNA polymerase from moving forward on the DNA).
Hope this information will clear your doubts about the topic.
Regards
An operator is located slightly downstream of the promoter. Operator is a region of DNA to which transcriptional factor attaches to regulate gene expression by repressing it. Some regulatory proteins are repressors that bind to pieces of DNA called operators. When bound to its operator, a repressor reduces transcription (e.g., by blocking RNA polymerase from moving forward on the DNA).
Hope this information will clear your doubts about the topic.
Regards