On the Electron-Transfer in NAD-FMN System

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概要

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• The electron-transfer from the reduced form NAD_<red> of NAD (nicotinamide adenine dinucleotide) to FMN (flavin mononucleotide), which plays an important role in biological energy-transformations, is studied according to the Mulliken theory for charge-transfer complexes. The π-electronic structures of NAD and FMN are determined in terms of the Pariser-Parr-Pople approximation of LCAO-ASMO-SCF theory. The geometrical configuration of NAD-FMN complex is assumed such that the molecular plane of pyridine ring of NAD is parallel to that of isoalloxazine ring of FMN, in order to obtain an optimum overlap of π-electrons between them. It is shown that the electron-transfer does not occur from NAD_<red> to FMN but only from the ionized form (NAD_<ox>)^<2-> FMN (NAD_<ox> being the oxidized form of NAD).

• 社団法人日本物理学会の論文
• 1971-10-05

著者

• HONDA Mitsuo

  Department of General Education of Physics,School of Engineering,Toyo University

• Honda Mitsuo

  Department Of Physics Faculty Of Science Tokyo Metropolitan University

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