메뉴 건너뛰기




Volumn 126, Issue 35, 2004, Pages 11103-11112

Direct immobilization of native yeast iso-1 cytochrome c on bare gold: Fast electron relay to redox enzymes and zeptomole protein-film voltammetry

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON TRANSFER; GOLD ELECTRODES;

EID: 4444287592     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja046737w     Document Type: Article
Times cited : (121)

References (114)
  • 55
    • 0030937861 scopus 로고    scopus 로고
    • Taking 1YCC (ref 13) as the starting point, reorientation of the three C-terminal amino acids Ala101, Cys102, and Glu103, avoiding overlapping van der Waals radii, results in a surface-exposed thiol at a distance of ∼1.6 nm from the burned heme edge. Experimentally, a distance >1.5 nm between the heme and a spin label attached to Cys102 has been found: Qu, K. B.; Vaughn, J. L.; Sienkiewicz, A.; Scholes, C. P.; Fetrow, J. S. Biochemistry 1997, 36, 2884-2897.
    • (1997) Biochemistry , vol.36 , pp. 2884-2897
    • Qu, K.B.1    Vaughn, J.L.2    Sienkiewicz, A.3    Scholes, C.P.4    Fetrow, J.S.5
  • 85
    • 4444251982 scopus 로고    scopus 로고
    • note
    • (a) Subtraction of a bare gold electrode blank is not sufficient for analysis because slight differences after polishing and cleaning yield differences in the background current that are relatively small, yet many times larger than the YCC peaks.
  • 86
    • 4444306674 scopus 로고    scopus 로고
    • note
    • (b) The voltammograms in the presence of enzyme and substrate are noisier as compared to the background. In part, this is expected because of the difference in the number of averaged traces (3 versus 10). Additional noise is probably generated by small fluctuations in the diffusion profile due to the long time-scale of the measurement.
  • 95
  • 99
    • 4444232130 scopus 로고    scopus 로고
    • note
    • Two major differences with the single donor-acceptor model are noted: because all levels contribute, the inverted regions of the individual levels are compensated and do not appear in the total rate constant. Furthermore, the reorganization energy is associated with the half-reaction of the redox center only, because the electrode does not contribute to it.
  • 100
    • 0037069825 scopus 로고    scopus 로고
    • For equine cytochrome c, electrostatically adsorbed with the heme cleft towards a carboxyl-terminated self-assembled monolayer on gold, Murgida and Hildebrandt reported that the reorganization energy is 0.22 eV, which is substantially lower as compared to that in solution due to exclusion of water: (a) Murgida, D. H.; Hildebrandt, P. J. Phys. Chem. B 2002, 106, 12814-12819.
    • (2002) J. Phys. Chem. B , vol.106 , pp. 12814-12819
    • Murgida, D.H.1    Hildebrandt, P.2
  • 101
    • 0036148444 scopus 로고    scopus 로고
    • (b) Hildebrandt, P.; Murgida, D. H. Bioelectrochem. 2002, 55, 139-143. However, because in our system the heme cleft is facing the solution, we assume that the reorganization energy is equal to that of YCC in solution.
    • (2002) Bioelectrochem , vol.55 , pp. 139-143
    • Hildebrandt, P.1    Murgida, D.H.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.