There's no vaccine to prevent HIV infection and no cure for AIDS. But it's possible to protect yourself and others from infection. That means educating yourself about HIV and avoiding any behavior that allows HIV-infected fluids â blood, semen, vaginal secretions and breast milk â into your body.hen used to help prevent HIV infection, Truvada is only appropriate if your doctor is certain you don't already have an HIV infection. Your doctor should also test for hepatitis B infection. If you have hepatitis B, your doctor should test your kidney function before prescribing Truvada.
Contact Us. A promoter is a regulatory region of DNA located upstream (towards the 5' region) of of a gene, providing a control point for regulated gene transcription.
The cis-regulatory elements are the binding sites of transcription factors which are the proteins that, upon binding with cis-regulatory elements, can affect (either enhance or repress) transcription. The trans-regulatory elements are the DNA sequences that encode transcription factors.he transcription region consists of exons and introns. The regulatory elements include promoter, response element, enhancer and silencer (not shown). Downstream refers to the direction of transcription and upstream is opposite to the transcription direction.