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Volumn 131, Issue 22, 2009, Pages 7869-7878

S K-edge XAS and DFT calculations on cytochrome P450: Covalent and ionic contributions to the cysteine-Fe bond and their contribution to reactivity

Author keywords

[No Author keywords available]

Indexed keywords

PROBABILITY DENSITY FUNCTION; SULFUR COMPOUNDS;

EID: 67650549945     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja901868q     Document Type: Article
Times cited : (63)

References (70)
  • 6
    • 0000767074 scopus 로고    scopus 로고
    • Loew, G. H.; Harris, D. L. 2000, 100, 407-420
    • Loew, G. H.; Harris, D. L. 2000, 100, 407-420.
  • 22
    • 31044450583 scopus 로고    scopus 로고
    • Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University: Stanford, CA
    • George, G. N. EXAFSPAK and EDG-FIT; Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University: Stanford, CA, 2000.
    • (2000) EXAFSPAK and EDG-FIT
    • George, G.N.1
  • 23
    • 0004102709 scopus 로고
    • Springer-Verlag: Berlin
    • Agarwal, B. X-ray Spectroscopy; Springer-Verlag: Berlin, 1979; p 276.
    • (1979) X-ray Spectroscopy , pp. 276
    • Agarwal, B.1
  • 34
    • 84962340323 scopus 로고    scopus 로고
    • It has been shown that there is no sixth ligand in the high-spin state
    • It has been shown that there is no sixth ligand in the high-spin state.
  • 41
    • 84962428577 scopus 로고    scopus 로고
    • Note that the model B and C has very similar electronic structure. Hence we use model B to evaluate ionization energy shifts as it is more computationally economic
    • Note that the model B and C has very similar electronic structure. Hence we use model B to evaluate ionization energy shifts as it is more computationally economic.
  • 47
    • 84962453835 scopus 로고    scopus 로고
    • -
    • -.
  • 48
    • 0024294403 scopus 로고
    • Dawson, J. H. Science 1988, 240, 433-439.
    • (1988) Science , vol.240 , pp. 433-439
    • Dawson, J.H.1
  • 51
    • 84962428618 scopus 로고    scopus 로고
    • However, this reaction involves a barrier associated with the forbidden two-electron spin flip
    • However, this reaction involves a barrier associated with the forbidden two-electron spin flip.
  • 52
    • 84962428626 scopus 로고    scopus 로고
    • note
    • - or a thiolate ligand. This can be attributed to the stronger Fe-O bonding in the product ferryl species (1.62 Å, Table 4) due to its relatively weak trans effect compared to a thiolate ligand (Fe-O 1.65 Å, Table 4). The stronger Fe-O bond in the resultant ferryl species is also indicated by the higher spin density on the oxygen of the ferryl unit (which reflects the covalency of the Fe-O bond) when imidazole ligand is trans to it. However, it must be emphasized that the calculations reflect lack of any significant effect of the axial ligand on the ΔE of the hemolytic O-O cleavage of compound 0.
  • 59
    • 84962402811 scopus 로고    scopus 로고
    • Note that this orientation is unlikely to change during the formation of compound 0 as both the Camphor and the Cysteine thiol is held tightly in their orientation in the protein active site
    • Note that this orientation is unlikely to change during the formation of compound 0 as both the Camphor and the Cysteine thiol is held tightly in their orientation in the protein active site.
  • 64
    • 84962453894 scopus 로고    scopus 로고
    • IV-OH bond is longer in the thiolate coordinated model. This is because of the strong σ covalency of a thiolate ligand that weakens the trans axial Fe-OH bond
    • IV-OH bond is longer in the thiolate coordinated model. This is because of the strong σ covalency of a thiolate ligand that weakens the trans axial Fe-OH bond.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.