title: Signaling protein inhibitors via the combinatorial modification of peptide scaffolds.
abstract: Compounds that selectively interfere with protein-protein interactions are not only invaluable as biological reagents, but may ultimately serve as therapeutically useful drugs for the treatment of a wide variety of disease states. However, unlike active site directed inhibitors that bind to a relatively small, well-defined, hydrophobic pocket, reagents that disrupt protein-protein interactions must contend with a protein surface that is comparatively large, ill defined, and solvent exposed. We have developed a straightforward method for the acquisition of protein-protein interaction inhibitors. The library-based strategy starts with low affinity consensus sequence peptides, which are then transformed in a stepwise fashion into high affinity inhibitors. The approach has been used to create potent ligands for SH2 and SH3 domains, as well as powerful and highly selective inhibitors for protein kinases and phosphatases. The protocol is easily automated and therefore has the potential to be routinely applied, in a high throughput fashion.
authors.affiliation: Department of Biochemistry, The Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, USA. dlawrenc@aecom.yu.edu
authors.forename: David S
authors.initials: DS
authors.lastname: Lawrence
mesh_terms: D000818:Animals; D020650:Combinatorial Chemistry Techniques / Q000379:methods*; D016384:Consensus Sequence / Q000187:drug effects; D004791:Enzyme Inhibitors / Q000737:chemistry* / Q000378:metabolism; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins / Q000037:antagonists & inhibitors* / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D008024:Ligands; D008958:Models, Molecular; D011487:Protein Conformation; D025941:Protein Interaction Mapping; D054562:Protein Tyrosine Phosphatase, Non-Receptor Type 1; D017027:Protein Tyrosine Phosphatases / Q000037:antagonists & inhibitors / Q000737:chemistry; D013329:Structure-Activity Relationship; D018909:src Homology Domains / Q000187:drug effects
chemical_list: D004791:Enzyme Inhibitors; D047908:Intracellular Signaling Peptides and Proteins; D008024:Ligands; C015482:protein kinase modulator; C516607:PTPN1 protein, human; D054562:Protein Tyrosine Phosphatase, Non-Receptor Type 1; D017027:Protein Tyrosine Phosphatases