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.
2. Structural motifs-proteins are the primary sources of regulated gene expression in eukaryotes (protein secondary structures and alpha helices), functional domains-allow the proteins to identify and specific regulatory DNA sequences in the major groove or minor groove.he introduction of a gene from one organism into the genome of another organism, the challenges: the need to introduce DNA into a cell in such a way that the DNA integrates into the genome, the need to provide appropriate regulatory sequences so that the transgene will be properly expressed.