Abstract: Phosphate/sulfate ester compounds that modulate and/or inhibit the activity of protein interacting NIMA (PIN1), and to pharmaceutical compositions containing such compounds are described. The invention is also directed to the therapeutic or prophylactic use of such compounds and compositions, and to methods of treating disorders characterized by hypertension, inappropriate cell proliferation, infectious diseases, and neurodegenerative brain disorders, by administering effective amounts of such compounds.

Abstract: Polypeptides containing the PIN1 peptidyl-prolyl isomerase domain but not containing the PIN1 WW domain are described. Also described are crystal structures of these polypeptides, including the crystal structure of a PIN1 PPIase:ligand complex. The structure coordinate data derived from these crystals provides a three-dimensional description of the substrate-binding site of PIN1 peptidyl-prolyl isomerase useful in drug discovery and design for the identification and design of modulators of PIN1 peptidyl-prolyl isomerase activity.

Abstract: The present invention relates to the identification, isolation and purification of the catalytic domain of the human effector checkpoint protein kinase (hChk1). A 1.7Å crystal structure of the hChk1 kinase domain in the active conformation is reported herein. The kinase domain of hChk1 and its associated crystal structure is described for use in the discovery, identification and characterization of inhibitors of hChk1. This structure provides a three-dimensional description of the binding site of the hChk1 for structure-based design of small molecule inhibitors thereof as therapeutic agents. Inhibitors of hChk1 find utility in the treatment of hyperproliferative disorders such as HIV and cancer.

Abstract: The present invention relates to the identification, isolation and purification of the catalytic domain of the human effector checkpoint protein kinase (hChk1). A 1.7 Å crystal structure of the hChk1 kinase domain in the active conformation is reported herein. The kinase domain of hChk1 and its associated crystal structure is described for use in the discovery, identification and characterization of inhibitors of hChk1. This structure provides a three-dimensional description of the binding site of the hChk1 for structure-based design of small molecule inhibitors thereof as therapeutic agents. Inhibitors of hChk1 find utility in the treatment of hyperproliferative disorders such as HIV and cancer.

Abstract: The identification, isolation and modification of human ERAB or HADH2 is described. A crystal structure of ERAB or HADH2 is described which may be used in the discovery, identification and characterization of inhibitors or modulators of ERAB or HADH2. This structure provides a three-dimensional description of binding sites of ERAB or HADH2 for structure-based design of inhibitors or modulators thereof as therapeutic agents, for example in the treatment of Alzheimer's disease).