Model Systems for Flavoenzyme Activity: Relationships between Cofactor Structure, Binding and Redox Properties
摘要:
A series of flavins were synthesized bearing electron-withdrawing and -donating substituents. The electrochemical properties of these flavins in a nonpolar solvent were determined. The recognition of these flavins by a diamidopyridine (DAP) receptor and the effect this receptor has on flavin redox potential was also quantified. It was found that the DAP-flavin binding affinity and the reduction potentials (E-1/2) for both the DAP-bound and unbound flavins correlated well with functions derived from linear free energy relationships (LFERs). These results provide insight and predictive capability for the interplay of electronics and redox state-specific interactions for both abiotic and enzymatic systems.
Model Systems for Flavoenzyme Activity: Relationships between Cofactor Structure, Binding and Redox Properties
摘要:
A series of flavins were synthesized bearing electron-withdrawing and -donating substituents. The electrochemical properties of these flavins in a nonpolar solvent were determined. The recognition of these flavins by a diamidopyridine (DAP) receptor and the effect this receptor has on flavin redox potential was also quantified. It was found that the DAP-flavin binding affinity and the reduction potentials (E-1/2) for both the DAP-bound and unbound flavins correlated well with functions derived from linear free energy relationships (LFERs). These results provide insight and predictive capability for the interplay of electronics and redox state-specific interactions for both abiotic and enzymatic systems.
A fused heterocyclic compound of formula (1):
wherein, A
1
and A
2
represent a nitrogen atom or the like, R
1
, R
2
, R
3
and R
4
represent a halogen atom or the like, R
2
and R
3
represent a halogen atom or the like, R
5
represents a C1-C6 chain hydrocarbon group optionally substituted with one or more halogen atoms, or the like, R
6
and R
7
represent a C1-C4 chain hydrocarbon group substituted with one or more halogen atoms, or the like, and n represents 0 or 1,
has an excellent noxious arthropod controlling effect.
Model Systems for Flavoenzyme Activity: Relationships between Cofactor Structure, Binding and Redox Properties
作者:Yves-Marie Legrand、Mark Gray、Graeme Cooke、Vincent M. Rotello
DOI:10.1021/ja036940b
日期:2003.12.1
A series of flavins were synthesized bearing electron-withdrawing and -donating substituents. The electrochemical properties of these flavins in a nonpolar solvent were determined. The recognition of these flavins by a diamidopyridine (DAP) receptor and the effect this receptor has on flavin redox potential was also quantified. It was found that the DAP-flavin binding affinity and the reduction potentials (E-1/2) for both the DAP-bound and unbound flavins correlated well with functions derived from linear free energy relationships (LFERs). These results provide insight and predictive capability for the interplay of electronics and redox state-specific interactions for both abiotic and enzymatic systems.