Drug designing against heterogeneous targets
Heterogeneity exists in the same target protein in the cell and leads to lower efficacy and safety. Therefore, that can accommodate the variation, which occur in nature. The heterogeneity, therefore, is integrated into the drug design process. The human immunodeficiency virus and is represented by several subtypes (A.B,C). For HIV-1, the first-generation protease inhibitors (Indianavir, Nelfinavir, Ritonavir and Saquinavir) had relatively unfavourable enthalpies, requiring very high entropy. The situation is reverse with second generation inhibitors, which had highly favourable enthalpies, but low binding entropies; they exhibited binding affinity higher than that of the first generation inhibitors.


