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Volumn 126, Issue 20, 2004, Pages 6448-6459

Initial structure modification of tetrahedral to planar nickel(II) in a nickel-iron-sulfur cluster related to the C-cluster of carbon monoxide dehydrogenase

Author keywords

[No Author keywords available]

Indexed keywords

BONDING; CARBON MONOXIDE; CAVITATION; ENZYMES; STRUCTURAL ANALYSIS;

EID: 2442689077     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja030627s     Document Type: Article
Times cited : (43)

References (69)
  • 11
    • 2442695998 scopus 로고    scopus 로고
    • note
    • 3, 1,3,5-tris((4,6-dimethyl-3-mercaptophenyl)thio)-2,4,6-tris(p-tolylthio) benzene(3-); mes, mesityl; Rr, Rhodospirillum rubrum.
  • 19
    • 2442639724 scopus 로고    scopus 로고
    • private communication
    • The structure of the C-cluster of M. thermoacetica (f. Clostridium thermoaceticum) reveals a Ni-S* distance inconsistent with a significant bonding interaction: Drennan, C. L., private communication.
    • Drennan, C.L.1
  • 30
    • 2442635902 scopus 로고    scopus 로고
    • See Supporting Information
    • See Supporting Information.
  • 63
    • 0002822447 scopus 로고    scopus 로고
    • 57Fe Mössbauer spectroscopy
    • Que, L., Jr., Ed.; University Science Books: Sausalito, CA; Chapter 6
    • 57Fe Mössbauer Spectroscopy. In Physical Methods in Inorganic and Bioinorganic Chemistry; Que, L., Jr., Ed.; University Science Books: Sausalito, CA, 2000; Chapter 6.
    • (2000) Physical Methods in Inorganic and Bioinorganic Chemistry
    • Münck, E.1
  • 64
    • 2442693561 scopus 로고    scopus 로고
    • note
    • Presently, we are not able to relate the clusters identified by Mössbauer spectroscopy to any of the structures characterized crystallographically. Therefore, we distinguish the spectroscopically suggested clusters by labels α and β, designating Fe cluster sites with Arabic numerals.
  • 66
    • 2442676014 scopus 로고    scopus 로고
    • note
    • 1- together with three cations in the asymmetric unit. For that material, the oxidized form contributed in zero field and at 4.2 K quadrupole doublets, as expected for a non-Kramers system. Comparison of the Mössbauer spectra of that form with those of the present sample showed that the spectrum of the 2- cluster was nearly the same in both crystals. Matching of the spectra for both samples revealed that the present sample must contain 10-15% of oxidized material, observed as quadrupole doublets. The oxidized fraction is not necessarily the 1- cluster.
  • 68
    • 2442658562 scopus 로고    scopus 로고
    • note
    • Inversion of the relative intensities of the g = 7.2 and 5.9 resonances with increasing temperature raised the possibility that they belong to different species. Given that the Mössbauer spectra indicate multiple species, the assumption would not be unreasonable.
  • 69
    • 2442666039 scopus 로고    scopus 로고
    • note
    • 3)]. Finally, it is not obvious how to relate the Mössbauer components seen in the polycrystalline samples with any of the four structures of cluster 3.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.