The binding properties of metandienone and human serum albumin by comparing with other five similar compounds

July 28, 2017

Title

The binding properties of metandienone and human serum albumin by comparing with other five similar compounds

Author

Xiang Lin, Qing Wang, Xilin Peng, Hui Li

Year

2016

Journal

Journal of Biochemical and Molecular Toxicology

Abstract

Metandienone (MET) is an exogenous anabolic androgenic steroid. The interaction between MET and human serum albumin (HSA) was investigated by molecular modeling and different optical techniques. There was no possibility of energy transfer, and the fluorescence quenching of HSA induced by MET was mainly due to the complex formation. The differences of binding ability between MET and compounds 1–5 were significantly caused by space steric hindrance. The single crystallographic data of two steroids (compounds 4 and 5) were obtained in the methanol at the first time. In addition, the binding ability was slightly affected by -OH, -CH3, and -COCH3. The results of displacement experiment demonstrated that the MET binding site was mainly located in site 1 of HSA. H-bonding and van der Waals forces were significant in the MET–HSA binding. MET played an insignificant role on the local conformation change in HSA.

Instrument

J-815

Keywords

Circular dichroism, Secondary structure, Ligand binding, Biochemistry