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Photoreactions of 1,4-naphthoquinone with lysozyme studied by laser flash photolysis and steady-state analysis
Zhang, ZX; Hao, SM; Zhu, HP; Wang, WF(王文峰); Wang, WF (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
2008
Source PublicationJOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
ISSN1011-1344
Volume92Issue:2Pages:77
AbstractPhotoprocesses of 1,4-naphthoquinone (NQ) and its photoreactions with lysozyme in acetonitrile/water (3: 1, v/v) solution were studied using 355 nm laser flash photolysis technique combined with electrophoresis and turbidimetric assay. The transient spectra of NQ were observed and the transient species were assigned. The electron transfer process from N,N,N ',N '-tetramethyl-p-phenylenediamine (TMPD) to NQ triplet state ((3)NQ(center dot)) was investigated and the rate constant was determined to be k(t1) = 2.0 x 10(10) M-1 s(-1). it has been found that (3)NQ(center dot) can abstract hydrogen atom from lysozyme with a rate constant of k(t2) = 2.4 x 10(10) M-1 s(-1). Furthermore, the results of steady-state analysis suggested that lysozyme can be damaged by NQ irradiated with UVA light influenced by the concentration of NQ and the gas saturated in the solution. The mechanisms of photosensitized damage of lysozyme were discussed. (c) 2008 Elsevier B.V. All rights reserved.
Subject AreaPhysics
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000258906600002
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/7801
Collection中科院上海应用物理研究所2004-2010年
Corresponding AuthorWang, WF (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
Recommended Citation
GB/T 7714
Zhang, ZX,Hao, SM,Zhu, HP,et al. Photoreactions of 1,4-naphthoquinone with lysozyme studied by laser flash photolysis and steady-state analysis[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,2008,92(2):77.
APA Zhang, ZX,Hao, SM,Zhu, HP,Wang, WF,&Wang, WF .(2008).Photoreactions of 1,4-naphthoquinone with lysozyme studied by laser flash photolysis and steady-state analysis.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,92(2),77.
MLA Zhang, ZX,et al."Photoreactions of 1,4-naphthoquinone with lysozyme studied by laser flash photolysis and steady-state analysis".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 92.2(2008):77.
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