Binding of nickel(II) tetrakis(dimethylpyrazolium-4-yl)porphyrin to poly(dG-dC)<sub>2</sub> and poly(dA-dT)<sub>2</sub>
作者:Daryono H. Tjahjono、Suhendar、Benny Permana、Naoki Yoshioka、Hidenari Inoue
DOI:10.1142/s1088424610002148
日期:2010.4
interaction of nickel(II) complex of cationic porphyrins bearing five-membered rings, meso-tetrakis(1,2-dimethylpyrazolium-4-yl)porphyrinatonickel(II) (NiPzP), with synthetic polynucleotides poly(dG-dC)2 and poly(dA-dT)2 has been characterized by viscometric, visible absorption, CD and MCD spectroscopic, and melting temperature measurements. The nickel(II) complex NiPzP is intercalated into poly(dG-dC)2 but
带有五元环的阳离子卟啉的镍 (II) 络合物、内消旋四(1,2-二甲基吡唑鎓-4-基)卟啉镍 (II) (NiPzP) 与合成多核苷酸 poly(dG-dC)2 和poly(dA-dT)2 已通过粘度测量、可见光吸收、CD 和 MCD 光谱以及熔融温度测量进行表征。镍 (II) 配合物 NiPzP 嵌入到聚 (dG-dC)2 中,但在外面与聚 (dA-dT)2 的大沟结合。NiPzP 与 poly(dG-dC)2 和 poly(dA-dT)2 的结合常数约为 106 M-1,与其他报道的阳离子金属卟啉的结合常数相当。NiPzP 与 poly(dG-dC)2 和 poly(dA-dT)2 的结合过程是吸热和熵驱动的。