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231223s2005 xx ||||| 00| ||eng c |
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|a pubmed25n0526.xml
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|a (DE-627)NLM15784921X
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|a (NLM)16171360
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Wang, Sheng-Fu
|e verfasserin
|4 aut
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|a Direct electrochemistry and electrocatalysis of heme proteins entrapped in agarose hydrogel films in room-temperature ionic liquids
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|c 2005
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|a Text
|b txt
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|2 rdacarrier
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|a Date Completed 17.04.2007
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|a Date Revised 21.11.2013
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|a published: Print
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|a CommentIn: Langmuir. 2006 Dec 19;22(26):11453-5. doi: 10.1021/la061336a. - PMID 17154639
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|a Citation Status MEDLINE
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|a The electrochemistry and electrocatalysis of a number of heme proteins entrapped in agarose hydrogel films in the room-temperature ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF(6)]) have been investigated. UV-vis and FTIR spectroscopy show that the heme proteins retain their native structure in agarose film. The uniform distribution of hemoglobin in agarose-dimethylformamide film was demonstrated by atomic force microscopy. Cyclic voltammetry shows that direct electron transfer between the heme proteins and glassy carbon electrode is quasi-reversible in [bmim][PF(6)]. The redox potentials for hemoglobin, myoglobin, horseradish peroxidase, cytochrome c, and catalase were found to be more negative than those in aqueous solution. The charge-transfer coefficient and the apparent electron-transfer rate constant for these heme proteins in [bmim][PF(6)] were calculated from the peak-to-peak separation as a function of scan rate. The heme proteins catalyze the electroreduction of trichloroacetic acid and tert-butyl hydroperoxide in [bmim][PF(6)]. The kinetic parameter I(max) (maximum current at saturation concentration of substrate) and the apparent K(m) (Michaelis-Menten constant) for the electrocatalytic reactions were evaluated
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Hemeproteins
|2 NLM
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|a Hydrogels
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|a Water
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|a 059QF0KO0R
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|a Trichloroacetic Acid
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|a 5V2JDO056X
|2 NLM
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|a Sepharose
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|a 9012-36-6
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|a tert-Butylhydroperoxide
|2 NLM
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|a 955VYL842B
|2 NLM
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1 |
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|a Chen, Ting
|e verfasserin
|4 aut
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|a Zhang, Zhi-Ling
|e verfasserin
|4 aut
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|a Shen, Xin-Cheng
|e verfasserin
|4 aut
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|a Lu, Zhe-Xue
|e verfasserin
|4 aut
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|a Pang, Dai-Wen
|e verfasserin
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|a Wong, Kwok-Yin
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1991
|g 21(2005), 20 vom: 27. Sept., Seite 9260-6
|w (DE-627)NLM098181009
|x 0743-7463
|7 nnns
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| 773 |
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|g volume:21
|g year:2005
|g number:20
|g day:27
|g month:09
|g pages:9260-6
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