血清白蛋白与降血糖药物相互作用的关键位点分析

Study on the interaction of the key sites of serum albumin and hypoglycemic drugs

用生物信息学的方法分析不同物种的血清白蛋白的亲缘关系,分析降血糖药物米格列醇和伏格列波糖与人血清白蛋白相互作用位点在其他亲缘关系较近的物种中相应的氨基酸变化特点。结果表明米格列醇、伏格列波糖与人血清白蛋白的结合位点都位于人血清白蛋白亚区IB的疏水腔中,其间的主要作用力是氢键和疏水作用力。米格列醇和伏格列波糖与血清白蛋白结合位点处的氨基酸在其他物种中大部分都是保守的,只有少数的氨基酸不同,且极性也不相同。血清白蛋白疏水性分析发现米格列醇和伏格列波糖与血清白蛋白结合位点处的氨基酸中亲水性的较多,疏水性的少,在其他4个亲缘关系较近的物种也具有同样的现象。这些分析结果为进一步研究降血糖药物在其他物种中的表现及相互作用等提供了重要的科学依据。

The bioinformatics method is used to analyze the relationship of serum albumin among different species, and to analyze the characteristics of the amino acid changes in the other closely related species of the interaction sites of hypoglycemic drugs miglitol and voglibose with human serum albumin. The results show that the binding sites of miglitol, voglibose and human serum albumin are located at the hydrophobic cavity of human serum albumin subdomain IB, and the main forces are hydrogen bonding and hydrophobic interaction. The amino acids at the binding sites of miglitol and voglibose with human serum albumin are mostly conserved in other species, with only a few amino acids being different and polarities being different. The serum albumin hydrophobicity analysis suggests that the amino acids at the binding sites of miglitol and voglibose with serum albumin are more hydrophilic, less hydrophobic, and the other four species in the same species also have the same phenomenon. These bioinformatics based analysis provide an important scientific basis for the further research on the expression and interaction of hypoglycemie drugs in other species.