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Citation: Wu Ye-Fan, Li Chun-Fang, Zeng Ding, Hong Liang, Lin Guo-Dong, Cai Qi-Rui. ³¹P-NMR Studies on Complexation of Fe₄S_4^* with ATP[J]. Acta Physico-Chimica Sinica, ;1991, 7(04): 400-403. doi: 10.3866/PKU.WHXB19910405 shu

³¹P-NMR Studies on Complexation of Fe₄S_4^* with ATP

1.
Depratment of Bioloty, Xiamen University, Xiamen 361005; Experiment center, Xiamen University; Department of Chemistry, Xiamen University

Received Date: 8 February 1991
Available Online: 15 August 1991

Chemical modeling studies of ATP driven electron-transfer in Nitrogenase reaction show that adenylate compounds can complex with [Fe_4S_4(SPh)_4]~(2-) cluster, resulting in down field shifting of the ~(31)P NMR peaks of α-、β- and γ-PO_4 about 13.2ppm. 8.3ppm and 28.3ppm, respectively (in its DMF-D_2O(3:2v/v) solution). in down-field shifting of the ~(31)p NMR peaks of a-and β-PO_4 of ADP by about 15.77ppm and 2.71ppm respectively. (in DMF-D_2O (3:2v/v) solution). The above experimental results is quite similar to the observations of Mortenson et al in Fe-protein system. This may be taken as the strong evidence for supporting the view that all of the MgATP and the MgADP can coordinate to the Fe_4S_4~* center of the Fe-protein through the PO_4 groups, rather than other parts of theprotein.
- ATP; Fe₄S_4^* Cluster; Complexation
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沈阳化工大学材料科学与工程学院沈阳 110142

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31P-NMR Studies on Complexation of Fe4S4* with ATP

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通讯作者: 陈斌, bchen63@163.com

³¹P-NMR Studies on Complexation of Fe₄S_4^* with ATP