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The Search of Pig Pheromonal Ordorants for Biostimulation Control System Technology: IV. Comparative Molecular Similarity Indices Analyses (CoMSIA) on the Binding Affinities between Ligands of 2-(Cyclohexyloxy)-tetrahydrofurane Derivatives and Porcine Ordorant Binding Protein  

Sung, Nack-Do (Division of Applied Biological Chemistry, Chungnam National University)
Park, Chang-Sik (Research Center for Transgenic Cloned Pigs, Chungnam National University)
Jang, Seok-Chan (Division of Applied Biological Chemistry, Chungnam National University)
Choi, Kyung-Seob (Division of Applied Biological Chemistry, Chungnam National University)
Publication Information
Abstract
To search of a new porcine pheromonal odorants, the comparative molecular similarity indices analysis(CoMSIA) between porcine odorant binding protein(pOBP) as receptor and ligands of green odorants 2-(Cyclohexyloxy)tetrahydrofurane derivatives as substrate molecule were conducted and disscused quantitatively. In the optimized CoMSIA model(I-AI) with chirality($I:\;C_{1) in substrate molecules and atom based fit alignment(AE) of the odorants the statistical PLS results showed the best predictability of the binding affinities based on the LOO cross-validated value ${r^2}_{cv.}\;(q^2=0.856)$ and non cross-validated conventional coefficient(${r^2}_{ncv.}=0.964)$). The structural distinctions of the highest active molecules were able to understand from the interaction between pOBP and green odorants in the contour maps with CoMSIA model.
Keywords
Porcine ordorant binding protein; 2-(Cyclohexyloxy)tetrahydro-furane; Binding affinity constants; CoMSIA model;
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