Interactions of Drugs with their Molecular Targets 1200-2BLOK6-BIOW6

In this lecture the structures of various kinds of complexes with ligands as well as the mechanisms of drug action on the molecular level will be shown. Currently, the large number of 3D structures of these complexes allows for detailed analyses of interactions in complexes drug-target. Described structures will be presented in dynamic view to show their thermal motions and especially a dynamic mutual induced fit of ligand and receptor or enzyme in their binding sites.

The following essential groups of drugs will be described based on selected examples: antibacterial (penicillins, cephalosporins, blocking DNA or RNA (ribosome) of bacteria), antiviral (acting on particular enzymes of viruses: protease, neuraminidase, reverse transcriptase, etc.), anticancer (blocking of DNA, blocking of topoisomerases in complexes with DNA, blocking of microtubule growth, blocking of kinases, proteasome, etc.), anti-inflammatory (acting on enzymes i.a. COX1/2, effects of drug selectivity), drugs for reproductive medicine, drugs acting on GPCRs (G-protein-coupled receptors) (agonists/antagonists and other ligand types, biased ligands and functional selectivity).

Some other aspects of drug actions will be also illustrated: reasons of drug resistance to antibiotics, the structure and action of viruses, weak points of viruses – how one can block the virus, synthesis of proinflammatory factors from arachidonic acid, transduction of signals through the cell surface by GPCRs, strategies of drug actions on neurons(synapses), drugs and poisons, and other issues.