Abstract
ABSTRACTFluorescence, ultraviolet-visible absorption spectroscopy, circular dichroism spectrum, and molecular docking methods were employed to study the interaction mechanisms of batatasin V and its isomer with human serum albumin. The two isomers both bond reactively to the hydrophobic activity in subdomain IIA, with an approximate binding affinity. Thermodynamic parameters and molecular modeling results manifested that hydrogen bonds and van der Waals force were the main contributors to the interaction. The secondary structure of human serum albumin was altered with the obvious decreased amount of α-helix. The results overall suggested similar binding mechanisms of batatasin V isomers with human serum albumin. This work will promote the further study of batatasins for pharmacological function. It could also help to provide some useful information for further drug design based on batatasins.
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