کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1987756 | 1540297 | 2010 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Homology modeling and docking studies of Comamonas testosteroni B-356 biphenyl-2,3-dioxygenase involved in degradation of polychlorinated biphenyls Homology modeling and docking studies of Comamonas testosteroni B-356 biphenyl-2,3-dioxygenase involved in degradation of polychlorinated biphenyls](/preview/png/1987756.png)
Biphenyl dioxygenase is a microbial enzyme which catalyzes the stereospecific dioxygenation of aromatic rings of biphenyl congeners leading to their degradation. Hence, it has attracted the attention of researchers due to its ability to oxidize chlorinated biphenyls, which are one of the serious environmental contaminants. In the present study, the three-dimensional model of α-subunit of biphenyl dioxygenase (BphA) from Comamonas testosteroni B-356 has been constructed. The resulting model was further validated and used for docking studies with a class of chlorinated biphenyls such as biphenyl,3,3′-dichlorobiphenyl and 4,4′-dichlorobiphenyl. The kinetic parameters of these biphenyl compounds were well matched with the docking results in terms of conformational and distance constraints. The binding properties of these biphenyl compounds along with identification of critical active site residues could be used for further site-directed mutagenesis experiments in order to identify their role in activity and substrate specificity, ultimately leading to improved mutants for degradation of these toxic compounds.
Journal: International Journal of Biological Macromolecules - Volume 46, Issue 1, 1 January 2010, Pages 47–53