1989
DOI: 10.1016/0921-4526(89)90210-x
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EXAFS studies of metallothionein

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Cited by 4 publications
(3 citation statements)
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“…On the contrary, EXAFS studies have failed to give consistent results for second shell scattering. For example, EXAFS studies on Zn7MT (MT complexed with 7 Zn atoms) extracted from rabbit liver supported the NMR results and showed two higher Zn-Zn shells at 5.0 and 5.2 Å, with a coordination number of 1 for both shells (48,32). Data from Stephan and Hitchcock (53) on model compounds for MT [Zn4(SC6H5)10 2-] also indicated the presence of a Zn-Zn second-shell peak at R ) 4.03 Å and CN ) 3.6.…”
Section: Table 2 Zn K-edge Energies Determined From Xanes For Fish Li...mentioning
confidence: 74%
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“…On the contrary, EXAFS studies have failed to give consistent results for second shell scattering. For example, EXAFS studies on Zn7MT (MT complexed with 7 Zn atoms) extracted from rabbit liver supported the NMR results and showed two higher Zn-Zn shells at 5.0 and 5.2 Å, with a coordination number of 1 for both shells (48,32). Data from Stephan and Hitchcock (53) on model compounds for MT [Zn4(SC6H5)10 2-] also indicated the presence of a Zn-Zn second-shell peak at R ) 4.03 Å and CN ) 3.6.…”
Section: Table 2 Zn K-edge Energies Determined From Xanes For Fish Li...mentioning
confidence: 74%
“…113 Cd NMR studies on MTs extracted from rat or blue crab suggested that each metal ion was complexed with four thiolate ligands (26,28,29). Supporting results from EXAFS studies of Zn in different Zn-induced MTs extracted from sheep, pig, or rabbit livers also indicated that the metal atoms were exclusively bonded to four S atoms from the cysteinyl group in the protein (30)(31)(32). However, specific intracellular interactions of metal with MTs or other ligands in fish still need to be clarified (33), and more direct, spectroscopic evidences of metal speciation in fish tissue are required.…”
Section: Introductionmentioning
confidence: 98%
“…However, on the basis of X‐ray absorption studies conducted on some of the species observed in the titration of either apo‐MT or Zn 7 ‐MT with Hg(II), monitored by optical spectroscopy, Lu & Stillman [17] proposed a distorted tetrahedral co‐ordination for Hg(II) in Hg 7 ‐MT with two short (2.33 Å) and two long (3.4 Å) Hg‐S distances [18]. Previous extended X‐ray absorption fine structure (EXAFS) results for Hg 7 ‐MT were consistent with a Hg‐S bond length of 2.42 Å and suggested that Hg(II) was in a three‐co‐ordinate thiolate environment [19].…”
mentioning
confidence: 96%