Searching of new enantiomerically pure chiral derivatives of xanthones (CDXs) with potential pharmacological properties, particularly those with anti-inflammatory activity, has remained an area of interest of our group. Herein, we describe in silico studies and in vitro inhibitory assays of cyclooxygenases (COX-1 and COX-2) for different enantiomeric pairs of CDXs. The evaluation of the inhibit...

The primary objective of this research was to evaluate various factors that affect the reaction rate of oxidative coupling (OXC) reaction of phenolic estrogens catalyzed by horseradish peroxidase (HRP). Kinetic parameters were obtained for the conversion of phenol as well as natural and synthetic estrogens estrone (E(1)), 17β-estradiol (E(2)), estriol (E(3)), and 17α-ethinylestradiol (EE(2)). M...

We have earlier reported the MOLSDOCK technique to perform rigid receptor/flexible ligand docking. The method uses the MOLS method, developed in our laboratory. In this paper we report iMOLSDOCK, the 'flexible receptor' extension we have carried out to the algorithm MOLSDOCK. iMOLSDOCK uses mutually orthogonal Latin squares (MOLS) to sample the conformation and the docking pose of the ligand an...

In genetic algorithm (GA), there are two main methods of determining trial candidates: crossover and mutation. While crossover directs search between fit candidates, mutation plays a role on jumping out local optimal. In molecular docking calculations, it is desirable to chart as much unexplored search space as possible. Therefore it is desirable that mutation results in a uniform distribution ...

Evolutionary programs (EPs) and evolutionary pattern search algorithms (EPSAs) are two general classes of evolutionary methods for optimizing on continuous domains. The relative performance of these methods has been evaluated on standard global optimization test functions, and these results suggest that EPSAs more robustly converge to near-optimal solutions than EPs. In this paper we evaluate t...

MOTIVATION To find a correlation between the activities and structures of molecules is one of the most important subjects for molecular evaluation study. Traditional quantitative structure-activity relationship (QSAR) methodologies represent those attempts using physicochemical descriptors. Creating a new molecular description factor based on the results of a computational docking study will ad...

Docking is an important tool in computational drug discovery that aims to predict the binding pose of a ligand to a target protein through a combination of pose scoring and optimization. A scoring function that is differentiable with respect to atom positions can be used for both scoring and gradient-based optimization of poses for docking. Using a differentiable grid-based atomic representatio...

UNLABELLED Screening of ligand molecules to target proteins using computer-aided docking is a critical step in rational drug discovery. Based on this circumstance, we attempted to develop a virtual screening application system, named VSDK Virtual Screening by Docking, which can function under the Windows platform. This is a user-friendly, flexible, and versatile tool which can be used by users ...

Screening of ligand molecules for target protein using computer-aided docking is a critical step in rational drug discovery. Based on this circumstances ,we attempted to develop a virtual screening application system, named VSDK virtual Screening by Docking, which can function under windows and linux both platform. The predicted model of Cytochrome P450 (CYP26A1) was used for virtual screening ...

A novel series of pyridine ring containing diaryl urea derivatives (R1-R9) were synthesized in four chemical steps using pyridine-2-carboxylic acid as starting material. The compounds design by Autodock vina the crystal structure Kinase domain Human B-raf (PDB ID: 4DBN) to get insights into structural requirements for anticancer activity. In vitro activity against cell line (MCF-7) showed that ...