Well, these are also segments of DNA that allow the binding of different types of regulatory proteins. So they can either be proteins that activate transcription or proteins that repress transcription, inhibit transcription from taking place. Now, unlike the core promoter, which doesn't really change when we go from one eukaryotic gene to another, we see that the number and the types of upstream promoters do vary between different types of eukaryotic genes. Now, the final type of section that we're going to focus on is known as the enhancer. So this section is known as the enhancer, and notice it is found much farther away from our gene than anything else. In fact, the enhancer is usually found thousands of bases upstream or downstream our gene.