Structure-based Quantitative Structure-activity Relationship Studies of Checkpoint Kinase 1 Inhibitors

Structure-based quantitative structure-activity relationship (QSAR) studies on a series of checkpoint kinase 1 (Chk1) inhibitors were performed to find the key structural features responsible for their inhibitory activity. Molecular docking was employed to explore the binding mode of all inhibitors at the active site of Chk1 and determine the active conformation for the QSAR studies. … Continued

A Comparative Molecular Field Analysis (CoMFA) Study Using Semiempirical, Density Functional, Ab Initio Methods and Pharmacophore Derivation Using DISCOtech on Sigma 1 Ligands

The Comparative Molecular Field Analysis (CoMFA) was developed to investigate a three-dimensional quantitative structure activity relationship (3D-QSAR) model of ligands for the sigma 1 receptor. The starting geometry of sigma-1 receptor ligands was obtained from the Tripos force field minimizations and conformations were decided from DISCOtech using the SYBYL® 6.8. program. The structures of 48 … Continued

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