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Volumn 126, Issue 8, 2004, Pages 2328-2338

An EPR, ESEEM, Structural NMR, and DFT Study of a Synthetic Model for the Covalently Ring-Linked Tyrosine-Histidine Structure in the Heme-Copper Oxidases

Author keywords

[No Author keywords available]

Indexed keywords

COMPUTER SIMULATION; ELECTRONIC STRUCTURE; ELECTRONS; ENZYMES; NUCLEAR MAGNETIC RESONANCE; PARAMAGNETIC RESONANCE; PHENOLS; PROBABILITY DENSITY FUNCTION; SPECTROSCOPIC ANALYSIS;

EID: 1542306951     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja0303743     Document Type: Article
Times cited : (19)

References (41)
  • 26
    • 1542289599 scopus 로고    scopus 로고
    • note
    • Recently van der Donk and co-workers23 reported the EPR signal of the 2-imidazole-1-yl-4-methylphenol radical. The overall line width and line shape of the EPR signal we observed here are similar to those reported. However, the EPR spectrum reported here differs from a very recent result by Cappuccio et al.24 of the radical form of a cross-linked histidine-phenol due to the absence of methyl protons of the compound.
  • 28
    • 1542319749 scopus 로고    scopus 로고
    • note
    • Modulation from weakly coupled protons is suppressed by our selection of a τ value that is a multiple of the proton Larmor frequency.
  • 31
    • 1542289600 scopus 로고    scopus 로고
    • note
    • We note here that weakly coupled nitrogen nuclei from proximal solute molecules are unlikely to contribute to ESEEM spectra, since, at a 10 mM concentration, approximately 0.0005 other solute molecules would be located within a distance of 6 Å or less, which is a good estimate of detectable distance for weakly coupled nitrogens in ESEEM experiments. Therefore, we can rule out detection of intermolecular nitrogen couplings.
  • 32
  • 40
    • 1542379597 scopus 로고    scopus 로고
    • note
    • 2qQ and ε differ by less than 2% from the values calculated for the pseudo-trans rotamer of RS.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.