作者:Fengli Guo、Bryan H. Chang、Carmelo J. Rizzo
DOI:10.1016/s0960-894x(01)00712-0
日期:2002.1
A model flavin possessing a specific hydrogen bond to the N1-position has been synthesized. The redox potential has been measured in aqueous buffer and found to be shifted +21 mV as compared to a similar flavin lacking this hydrogen bond. The reaction of the N1-hydrogen-bonding model with sulfite and 1-benzyl-dihydronicotinamide were examined and compared with the non-hydrogen-bonded flavin. The N1-hydrogen
合成了在N1位置具有特定氢键的黄素模型。已经在水性缓冲液中测量了氧化还原电势,发现与缺乏该氢键的类似黄素相比,氧化还原电势偏移了+21 mV。检查了N1-氢键模型与亚硫酸盐和1-苄基-二氢烟酰胺的反应,并将其与非氢键黄素进行了比较。N1-氢键不会加快亚硫酸根离子或氢化物向N5的添加速度,但是N5-亚硫酸盐配合物比非氢键模型稳定了近4倍。还对模型黄素进行了计算研究。