Description
Integrase catalyzes viral DNA integration into the host chromosome, by performing a series of DNA cutting and joining reactions. The enzyme activity takes place after virion entry into a cell and reverse transcription of the RNA genome in dsDNA. The full length HIV-1 integrase (288 amino acids) has three domains: the catalytic core, the C-terminal, and the N-terminal domains. Although all three domains are required for integration, it is thought that the catalytic core domain contains the active site responsible for catalysis of all the reactions of integration/disintegration.
