REDOX THERMODYNAMICS OF CYTOCHROME-C AT THE BARE GLASSY-CARBON ELECTRODE

	REDOX THERMODYNAMICS OF CYTOCHROME-C AT THE BARE GLASSY-CARBON ELECTRODE
	CHI QJ ; DONG SJ
刊名	journal of electroanalytical chemistry
	1993
卷号	348 期号:1-2 页码:377-388
关键词	BIS(4-PYRIDYL)DISULFIDE-MODIFIED GOLD ELECTRODE TEMPERATURE-DEPENDENCE DIRECT ELECTROCHEMISTRY VOLTAMMETRIC RESPONSE FERROCYTOCHROME-C FERRICYTOCHROME-C INDIUM OXIDE ION-BINDING PH PROTEINS
ISSN号	0022-0728
中文摘要	investigation of the redox thermodynamics of horse heart cytochrome c at bare glassy carbon electrodes has been performed using cyclic voltammetry with a nonisothermal electrochemical cell. the thermodynamic parameters of the electron-transfer reaction of cytochrome c have been estimated in different component buffer solutions. the change deltas(re)-degrees in reaction center entropy and the formal potential e-degrees' (at 25-degrees-c, vs. standard hydrogen electrode (she)) for cytochrome c are found to be -64.1 j k-1 mol-1 and 0.251 v in phosphate buffer, -64.8 j k-1 mol-1 and 0.257 v in tris + hcl buffer, -65.6 j k-1 mol-1 and 0.261 v in tris+ch3cooh buffer (ph 7.0, ionic strength 100 mm). the temperature dependence of the formal potential obtained in phosphate buffer with or without nacl in the range 5-55-degrees-c shows biphase characteristics in an alkaline solution with an intersection point at ca. 44-degrees-c or 42-degrees-c, which should be due to a structural change in the protein moiety of cytochrome c. however, in acidic and neutral solutions only a monotonic relationship between e-degrees' and temperature is observed. the effect of the buffer component on e-degrees' for cytochrome c is also discussed.
收录类别	SCI收录期刊论文
语种	英语
公开日期	2011-01-19 ; 2011-06-10
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/36205]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	CHI QJ,DONG SJ. REDOX THERMODYNAMICS OF CYTOCHROME-C AT THE BARE GLASSY-CARBON ELECTRODE[J]. journal of electroanalytical chemistry,1993,348(1-2):377-388.
APA	CHI QJ,&DONG SJ.(1993).REDOX THERMODYNAMICS OF CYTOCHROME-C AT THE BARE GLASSY-CARBON ELECTRODE.journal of electroanalytical chemistry,348(1-2),377-388.
MLA	CHI QJ,et al."REDOX THERMODYNAMICS OF CYTOCHROME-C AT THE BARE GLASSY-CARBON ELECTRODE".journal of electroanalytical chemistry 348.1-2(1993):377-388.