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  • A specific stain for the detection of nonheme iron proteins in polyacrylamide gels.

A specific stain for the detection of nonheme iron proteins in polyacrylamide gels.

Analytical biochemistry (1992-12-01)
L M Leong, B H Tan, K K Ho
ABSTRACT

Nonheme iron proteins can be visualized as blue bands in native polyacrylamide gels using a staining method that is both simple and rapid. The reaction of potassium ferricyanide with protein-bound iron atoms to form royal blue complexes occurs almost instantaneously and is sensitive enough to detect 1 microgram of analytical-grade ferritin and 2 micrograms of purified ferredoxin from cyanobacteria. No special treatment of reagents or apparatus was necessary. On comparison, this stain was found to be more specific than the Ferene S stain, not detecting bovine serum albumin even when present as a hundredfold excess over ferritin. The method was found to be effective for isoelectric focusing gels as well.

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Supelco
3-(2-Pyridyl)-5,6-di(2-furyl)-1,2,4-triazine-5′,5′′-disulfonic acid disodium salt, for spectrophotometric det. of Fe, ≥99.0%
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3-(2-Pyridyl)-5,6-di(2-furyl)-1,2,4-triazine-5′,5′′-disulfonic acid disodium salt, Suitable for determination of Fe
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