I have been confused as to the difference between a response element and an enhancer.
Wikipedia has the definition of response element as the following:
Response elements are short sequences of DNA within a gene promoter region that are able to bind specific transcription factors and regulate transcription of genes.
Wikipedia's definition of enhancers:
In genetics, an enhancer is a short (50-1500 bp) region of DNA that can be bound by proteins (activators) to increase the likelihood that transcription of a particular gene will occur. These proteins are usually referred to as transcription factors.
They seem almost the same. What are the main differences?
The only difference I can see is that response elements can both halt transcription or allow for it. While enhancers only promote transcription if the transcription factor is present.
Is this the difference between the two, or is there something else that differentiates them?