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Volumn 280, Issue 5365, 1998, Pages 880-883

Reaction sequence of iron sulfide minerals in bacteria and their use as biomarkers

Author keywords

[No Author keywords available]

Indexed keywords

MINERAL;

EID: 0042562443     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.280.5365.880     Document Type: Article
Times cited : (178)

References (33)
  • 2
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    • M. Farina, H. Lins de Barros, D. Motta de Esquivel, J. Danon, Biol. Cell. 48, 85 (1983); F. G. Rodgers et al., Arch. Microbiol. 154, 18 (1990).
    • (1990) Arch. Microbiol. , vol.154 , pp. 18
    • Rodgers, F.G.1
  • 8
    • 2642632259 scopus 로고    scopus 로고
    • note
    • After deposition on the TEM grids, the bacterial cells were dried in air and were kept in a grid box in air before and between TEM studies. We used a JEOL 2000FX TEM operated at a 200-kV accelerating voltage and equipped with a double-tilt (±30°, ±45°) goniometer stage. TEM images were used to observe particle morphologies and structural defects. Compositions were determined by energy-dispersive x-ray spectrometry with an attached ultrathin-window KEVEX detector. Experimental k-factors for thin-film analysis were determined for Fe and Cu using pyrite and Cu sulfide standards. The structures of Fe sulfides were identified using single-crystal SAED by tilting the crystals into zone-axis orientations.
  • 9
    • 2642696301 scopus 로고    scopus 로고
    • note
    • There is uncertainty in the measured d spacings as a result of structural disorder in almost every part of this crystal.
  • 14
    • 2642591490 scopus 로고    scopus 로고
    • note
    • 110 spacings of mackinawite are 2.7 and 2.6 Å, respectively; the observed reflections have d values closer to cubic FeS than to mackinawite.
  • 17
    • 2642602595 scopus 로고    scopus 로고
    • note
    • In the case of these small crystals embedded in bacterial cells, the analytical error is estimated to be about 0.1 formula unit Fe.
  • 18
    • 2642684035 scopus 로고    scopus 로고
    • note
    • One month after sample collection, these crystals were still mackinawite or cubic FeS; they also contained a few atomic percent Cu, just like the disordered mackinawite-greigite magnetosomes. The cell was collected from Salt Pond, MA.
  • 26
  • 27
    • 84929718232 scopus 로고
    • G. Wächtershäuser, Syst. Appl. Microbiol. 10, 207 (1988); Microbiol. Rev. 53, 452 (1988); R. J. P. Williams, Nature 343, 213 (1990).
    • (1988) Microbiol. Rev. , vol.53 , pp. 452
  • 28
    • 0025709972 scopus 로고
    • G. Wächtershäuser, Syst. Appl. Microbiol. 10, 207 (1988); Microbiol. Rev. 53, 452 (1988); R. J. P. Williams, Nature 343, 213 (1990).
    • (1990) Nature , vol.343 , pp. 213
    • Williams, R.J.P.1
  • 29
    • 0029663175 scopus 로고    scopus 로고
    • D. S. McKay et al., Science 273, 924 (1996).
    • (1996) Science , vol.273 , pp. 924
    • McKay, D.S.1
  • 33
    • 2642633287 scopus 로고    scopus 로고
    • note
    • We thank J. B. Murowchick, H. Hartman, and I. Dódony for helpful discussions, B. Howes and D. R. Schlezinger for help with sample collection, and W. H. Fowle for suggestions in the manipulation of magnetotactic microorganisms. Supported by grants from NSF and NASA. Electron microscopy was performed at the Center for High-Resolution Electron Microscopy at Arizona State University.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.