Role of Enzymes in Tetrahydrobiopterin Biosynthesis: Computer Analysis of the Sequential Reaction of the Last Step
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概要
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Computer simulation analysis of the experimental data showed that C1'-keto PH4 and C2'-keto PH4 were sequential intermediates of the reduction of PPH4 to BH4 by SPR and that the reaction in the last step of the BH4 biosynthesis proceeds as follows:<BR>PPH4→C1'-keto PH4 ⇒ C2'-keto PH4→BH4<BR>C1'-keto PH4 is not detectable in the reduction of PPH4 by the purified SPR at neutral pH since isomerization (⇒)[8] may occur far more rapidly than the first reduction(→).
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著者
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HIKITA H.
Laboratory of Physics, Meikai University
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KATOH S.
Deptartment of Biochemistry, Meikai University
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SUEOKA T.
Deptartment of Biochemistry, Meikai University