molecular dynamics and docking investigations of several zoanthamine-type marine alkaloids as matrix metaloproteinase-1 inhibitors

Authors

maryam farrokhnia the persian gulf marine-medicine biotechnology research center, the persian gulf biomedical sciences research institute, bushehr university of medical sciences, bushehr ,iran.

karim mahnam biology department, faculty of sciences, shahrekord university, shahrekord, iran

abstract

zoanthamine-type alkaloids display a wide spectrum of biological effects. this study aimed to examine the inhibitory effects of norzoanthamine and its ten homologues of zoanthamine class on human fibroblast collagenase by modeling a three-dimensional structure of the ligands at collagenase using energy minimization, docking, molecular dynamics simulation and mm-pb/gbsa binding free energy calculations. the results showed that zoanthamide, zooxathellamine and enol-iminium form of norzoanthamine, with lower binding free energies than other compounds, are potent inhibitors of collagenase. however, the enol-iminium form of norzoanthamine showed a more inhibitory activity against collagenase than its keto form. this suggests that it can be used for treatment of many diseases such as osteoporosis, autoimmune diseases, and cancer. zinc-binding residues such as his 118, his 122 and his 128 for hydrogen bonds and leu 81, tyr 110, val 115, leu 126, pro 138, ser 139 for hydrophobic interactions should be considered for designing an inhibitor for collagenase. our theoretical results and mm/gbsa binding free energy calculations are consistent with experimental studies.

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Journal title:

iranian journal of pharmaceutical research

جلد ۱۶، شماره ۱، صفحات ۱۷۳-۱۸۶

Keywords

[ ' m a t r i x m e t a l o p r o t e i n a s e ' , 1 , ' z o a n t h a m i n e a l k a l o i d c l a s s ' , ' d o c k i n g ' , ' m o l e c u l a r d y n a m i c s s i m u l a t i o n ' , ' m m ' , ' p b / g b s a ' ]

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