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Pulse radiolysis studies of intermolecular charge transfers involving tryptophan and three-electron-bonded intermediates derived from methionine
Fu, HY(付海英); Lin, MZ; Muroya, Y; Katsumura, Y
2012
Source PublicationRESEARCH ON CHEMICAL INTERMEDIATES
ISSN0922-6168
Volume38Issue:1
AbstractThe oxidation processes of the radiation-generated, three-electron-bonded intermediates AcMet(2) [Sa ' S](+) and AcMet [Sa ' Br] were investigated by pulse radiolysis via their reactions with tryptophan (TrpH). These intermediates were derived from N-acetyl-methionine amide (N-AcMetNH(2)) and N-acetyl-methionine methyl ester (N-AcMetOMe). The bimolecular rate constant k of the reaction between each intermediate and l-tryptophan (TrpH) was measured. For N-AcMetNH(2), k for the reaction of AcMet(2) [Sa ' S](+) with TrpH were 3.4 x 10(8) and 2.2 x 10(8) dm(3) mol(-1) s(-1) at pH = 1 and 4.5, respectively. For N-AcMetOMe, k for the reaction of AcMet(2) [Sa ' S](+) with TrpH were 4.0 x 10(8) and 2.8 x 10(8) dm(3) mol(-1) s(-1) at pH 1 and 4.5, respectively. The rate constants for the intermolecular transformation of Met [Sa ' Br] into TrpH(+) or Trp were also estimated. For N-AcMetNH(2), k for the reaction of AcMet(2) [Sa ' Br] with TrpH were 2.6 x 10(8) and 3.3 x 10(8) dm(3) mol(-1) s(-1) at pH 1 and 4.5, respectively. Related mechanisms were discussed.
Language英语
Funding Project应物所项目组
WOS IDWOS:000297848400011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13265
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Fu, HY,Lin, MZ,Muroya, Y,et al. Pulse radiolysis studies of intermolecular charge transfers involving tryptophan and three-electron-bonded intermediates derived from methionine[J]. RESEARCH ON CHEMICAL INTERMEDIATES,2012,38(1).
APA Fu, HY,Lin, MZ,Muroya, Y,&Katsumura, Y.(2012).Pulse radiolysis studies of intermolecular charge transfers involving tryptophan and three-electron-bonded intermediates derived from methionine.RESEARCH ON CHEMICAL INTERMEDIATES,38(1).
MLA Fu, HY,et al."Pulse radiolysis studies of intermolecular charge transfers involving tryptophan and three-electron-bonded intermediates derived from methionine".RESEARCH ON CHEMICAL INTERMEDIATES 38.1(2012).
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