Bismuth chemistry and the glutaraldehyde insensitive staining reaction |
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Authors: | D A Brodie |
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Affiliation: | The Cell Science Laboratories, Department of Zoology, University of Western Ontario, London, Ontario, Canada N6A 5B7 |
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Abstract: | The free metal ion, Bi3+, is the only chemical species of bismuth that stains a strongly bismuth-reactive molecule, polyarginine, in vitro. The bismuth solution specifically requires tartrate as a chelating agent for the reaction to occur between pH 7.4 and 8.0. Since Bi3+ reacts strongly with polyarginine, creatine and ATP fixed to cellulose acetate strips and DEAE-cellulose and P-cellulose, the free metal ion (Bi3+) may bind to phosphate or guanidyl groups, or both, after glutaraldehyde fixation. |
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Keywords: | Bismuth chemistry staining |
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