Cis-acting regulatory sequences in the HIV long terminal repeat (LTR) which play a major role in induction or augmentation of HIV gene expression in response to environmental stimuli such as mitogens, phorbol esters, or other viruses. The HIV enhancer is the binding site for many cellular transcription factors including the nuclear factor NF-kappa B.

Synonyms: HIV 1 Enhancer, NF kB Binding Site, HIV, HIV NF kappa B Binding Site, NF-kappa B-Binding Site, HIV, HIV Enhancers, HIV Enhancer, Enhancers, HIV-1, Enhancer, HIV, NF-kB Binding Site, HIV, HIV NF-kB-Binding Sites, HIV-1 Enhancers, NF-kB-Binding Sites, HIV, Sites, HIV NF-kB-Binding, HIV NF-kappa B-Binding Site, Enhancers, HIV, Site, HIV NF-kB-Binding, Enhancer, HIV-1, HIV-1 Enhancer, NF-kB-Binding Site, HIV, NF kappa B Binding Site, HIV, HIV NF-kB-Binding Site