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Titolo:
An EXAFS study of zinc coordination in microbial cells
Autore:
Webb, SM; Gaillard, JF; Jackson, BE; Stahl, DA;
Indirizzi:
Northwestern Univ, Dept Civil Engn, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 ivil Engn, Evanston, IL 60208 USA
Titolo Testata:
JOURNAL OF SYNCHROTRON RADIATION
, volume: 8, anno: 2001,
parte:, 2
pagine: 943 - 945
SICI:
0909-0495(200103)8:<943:AESOZC>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-METAL CONTAMINATION; BINDING-SITES; SPECTROSCOPY; COMMUNITIES; SOILS;
Keywords:
EXAFS; metal coordination by microbes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Gaillard, JF Northwestern Univ, Dept Civil Engn, 2145 Sheridan Rd, Evanston, IL 60208 USA Northwestern Univ 2145 Sheridan Rd Evanston IL USA 60208 USA
Citazione:
S.M. Webb et al., "An EXAFS study of zinc coordination in microbial cells", J SYNCHROTR, 8, 2001, pp. 943-945

Abstract

Five microbes were isolated from metal amended enrichment cultures derivedfrom the sediments of a lake contaminated by a zinc smelter. Each of theseorganisms was grown in pure culture in the presence of zinc. Quick Extended X-ray Absorption Fine Structure (QEXAFS) spectroscopy was used to investigate the average coordination environment of the zinc associated with the microbial biomass. Fitting of the first coordination shell of zinc shows that significant differences exist for each microbial species examined. The coordination environment of zinc varies between sulfurs to six-fold nitrogen/oxygen, with two microbial strains showing mixed coordination shells. Further study is required in order to characterize these sites and their locations within the cell.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 00:39:14