Dinuclear platinum(II) complexes with 1,5-nphe bridging ligand: Spectroscopic and molecular docking study of the interactions with N-acetylated L-methionylglycine and human serum albumin
作者:Bata Konovalov、Ivana S. Đorđević、Andjela A. Franich、Biljana Šmit、Marija D. Živković、Miloš I. Djuran、Goran V. Janjić、Snežana Rajković
DOI:10.1016/j.molstruc.2023.135810
日期:2023.9
the chloride derivatives of the corresponding dinuclear platinum(II)-aqua complexes, [Pt(L)Cl}2(μ-1,5-nphe)]2+ (1–3) towards the human serum albumin (HSA), a transport protein, was investigated using electronic absorption and fluorescence emission measurements, and results indicated the static interactions between these complexes and HSA. A docking study revealed a unique binding site on HSA, based
在具有通式 [Pt(L)(H 2 O ) } 2 ( μ - 1,5-nphe)] 4+ (1,5-nphe 是 1,5-萘啶;L 是二齿配位的乙二胺 ( 1w ), (±)-1,2-丙二胺 ( 2w ) 和 1,3-丙二胺 ( 3w )) 有详细说明。这些复合物的水解活性由1监测H NMR 光谱,证实了该肽中 Met-Gly-amide 键的区域选择性裂解。量子化学计算揭示了二肽通过甲硫氨酸的末端酰胺氮配位,然后与硫原子配位的主要反应路径,其中生成的铂(II)-二肽络合物的分解及其甘氨酸残基的配位在 Met-Gly 酰胺键水解裂解之前。在次级反应路径中,Ac-L-Met-Gly 通过甲硫氨酸硫原子配位,起始 [Pt(L)(H 2 O)} 2 ( μ -1,5-nphe)的分解] 4+复合物之后是所研究二肽的区域选择性水解。相应双核铂 (II)-水络合物的氯化物衍生物 [Pt(L)Cl}