From Proteopediaproteopedia link
Structure-Based Design of Novel PIN1 Inhibitors (I)
[PIN1_HUMAN] Essential PPIase that regulates mitosis presumably by interacting with NIMA and attenuating its mitosis-promoting activity. Displays a preference for an acidic residue N-terminal to the isomerized proline bond. Catalyzes pSer/Thr-Pro cis/trans isomerizations. Down-regulates kinase activity of BTK. Can transactivate multiple oncogenes and induce centrosome amplification, chromosome instability and cell transformation. Required for the efficient dephosphorylation and recycling of RAF1 after mitogen activation.  
Publication Abstract from PubMed
Pin1 is a member of the cis-trans peptidyl-prolyl isomerase family with potential anti-cancer therapeutic value. Here we report structure-based de novo design and optimization of novel Pin1 inhibitors. Without a viable lead from internal screenings, we designed a series of novel Pin1 inhibitors by interrogating and exploring a protein crystal structure of Pin1. The ligand efficiency of the initial concept molecule was optimized with integrated SBDD and parallel chemistry approaches, resulting in a more attractive lead series.
Structure-based design of novel human Pin1 inhibitors (I).,Guo C, Hou X, Dong L, Dagostino E, Greasley S, Ferre R, Marakovits J, Johnson MC, Matthews D, Mroczkowski B, Parge H, Vanarsdale T, Popoff I, Piraino J, Margosiak S, Thomson J, Los G, Murray BW Bioorg Med Chem Lett. 2009 Oct 1;19(19):5613-6. Epub 2009 Aug 13. PMID:19729306
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.