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Volumn 130, Issue 12, 2008, Pages 3866-3877

Spectroscopic and density functional theory studies of the blue-copper site in M121SeM and C112SeC azurin: Cu-Se versus Cu-S bonding

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION SPECTRA; BOND LENGTH; COPPER COMPOUNDS; DICHROISM; RAMAN SPECTROSCOPY;

EID: 41149115084     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja076495a     Document Type: Article
Times cited : (44)

References (98)
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    • Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University: Stanford, CA
    • George, G. N. EXAFSPAK & EDG_FIT; Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University: Stanford, CA, 2000.
    • (2000) EXAFSPAK & EDG_FIT
    • George, G.N.1
  • 37
    • 84880888289 scopus 로고    scopus 로고
    • Department of Chemistry, York University:Toronto, ON
    • Gorelsky, S. I. AOMix; Department of Chemistry, York University:Toronto, ON, 1997; http://www.sg-chem.net.
    • (1997) AOMix
    • Gorelsky, S.I.1
  • 47
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    • Neese, F. ORCA, An ab initio, DFT and Semiempirical Electronic Structure Package, version 2.5; University of Bonn: Germany, 2007
    • Neese, F. ORCA - An ab initio, DFT and Semiempirical Electronic Structure Package, version 2.5; University of Bonn: Germany, 2007.
  • 54
    • 41149127560 scopus 로고    scopus 로고
    • thioether is relatively weak in CuL1 (13% over the two S atoms in ground state). This indicates that the ligand field in azurin is closer to that in CuL1 than suggested by their respective coordination numbers.
    • thioether is relatively weak in CuL1 (13% over the two S atoms in ground state). This indicates that the ligand field in azurin is closer to that in CuL1 than suggested by their respective coordination numbers.
  • 58
    • 2942595805 scopus 로고    scopus 로고
    • A pre-edge feature might be expected in the Se K-edge spectrum of C112SeC. However, the spectra reported in J. Am. Chem. Soc. 2004, 126, 7244-7256 do not exhibit a pre-edge transition. This likely reflects overlap of the pre-edge feature with the Se 1s → 4p+ continuum rising edge and the low resolution at the Se K-edge (∼3 eV).
    • A pre-edge feature might be expected in the Se K-edge spectrum of C112SeC. However, the spectra reported in J. Am. Chem. Soc. 2004, 126, 7244-7256 do not exhibit a pre-edge transition. This likely reflects overlap of the pre-edge feature with the Se 1s → 4p+ continuum rising edge and the low resolution at the Se K-edge (∼3 eV).
  • 59
    • 41149108407 scopus 로고    scopus 로고
    • The dipole integral I(s) has been experimentally determined for a free thiolate ligand. The % S-character in the ground state of WT and M121SeM have been calculated using an I(s) value of 8.47.
    • The dipole integral I(s) has been experimentally determined for a free thiolate ligand. The % S-character in the ground state of WT and M121SeM have been calculated using an I(s) value of 8.47.
  • 64
    • 41149135987 scopus 로고    scopus 로고
    • The small feature observed in the second derivative spectrum of WT at ∼2472.5 eV corresponds to the Cys(S)-(S)Cys disulfide bond present in azurin.
    • The small feature observed in the second derivative spectrum of WT at ∼2472.5 eV corresponds to the Cys(S)-(S)Cys disulfide bond present in azurin.
  • 65
    • 41149116985 scopus 로고    scopus 로고
    • Met interaction in C112SeC is not observed since it overlaps with the rising edge features from the seven additional S atoms and one disulfide bond.
    • Met interaction in C112SeC is not observed since it overlaps with the rising edge features from the seven additional S atoms and one disulfide bond.
  • 69
    • 41149157279 scopus 로고    scopus 로고
    • Cys are in the xy plane.
    • Cys are in the xy plane.
  • 86
    • 41149169945 scopus 로고    scopus 로고
    • DFT calculations were performed at the B3LYP/TZVP and B3LYP/6-311+G* level of theory.
    • DFT calculations were performed at the B3LYP/TZVP and B3LYP/6-311+G* level of theory.
  • 87
    • 41149105196 scopus 로고    scopus 로고
    • 5)] model has been recently shown to be good model for the blue-copper protein active site.
    • 5)] model has been recently shown to be good model for the blue-copper protein active site.
  • 94
    • 0000273676 scopus 로고    scopus 로고
    • Hille, R. Chem. Rev. 1996, 96, 2757-2816.
    • (1996) Chem. Rev , vol.96 , pp. 2757-2816
    • Hille, R.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.