Understanding human 15-hydroxyprostaglandin dehydrogenase binding with NAD+ and PGE2 by homology modeling, docking and molecular dynamics simulation.
Homology modeling, molecular docking, and molecular dynamics simulation have been performed to determine human 15-hydroxyprostaglandin dehydrogenase (15-PGDH) binding with its NAD+ cofactor and prostaglandin E2 (PGE2) substrate. The computational studies have led to a three-dimensional (3D) model of the entire 15-PGDH-NAD+-PGE2 complex, demonstrating the detailed binding of PGE2 with 15-PGDH for the first time. This 3D model shows specific interactions of the protein with the cofactor and substrate in qualitative agreement with available experimental data. Our model demonstrates the PGE2-binding cavity of the protein for the first time. The model further leads to an interesting prediction that the catalytic activity of 15-PGDH should also significantly be affected by Gln148, in addition to the previously known three catalytic residues (Ser138, Tyr151, and Lys155). The reported 3D model of 15-PGDH-NAD+-PGE2 complex might be valuable for future rational design of novel inhibitors of 15-PGDH.
Hamza
Adel
A
Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA.
Cho
Hoon
H
Tai
Hsin-Hsiung
HH
Zhan
Chang-Guo
CG
D000595:Amino Acid Sequence; D015232:Dinoprostone / Q000378:metabolism*; D006801:Humans; D006911:Hydroxyprostaglandin Dehydrogenases / Q000378:metabolism*; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009243:NAD / Q000378:metabolism*; D017386:Sequence Homology, Amino Acid
D009243:NAD; D006911:Hydroxyprostaglandin Dehydrogenases; C035859:15-hydroxyprostaglandin dehydrogenase; D015232:Dinoprostone