Newly found selenium-containing proteins in the tissues of the rat - PubMed (original) (raw)

. 1996 Oct-Nov;55(1-2):99-110.

doi: 10.1007/BF02784172.

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• PMID: 8971358
• DOI: 10.1007/BF02784172

Newly found selenium-containing proteins in the tissues of the rat

D Behne et al. Biol Trace Elem Res. 1996 Oct-Nov.

Abstract

The Se-containing proteins in 27 tissues of the rat were investigated by in vivo labeling with 75Se-selenite, separation of the tissue homogenate proteins by SDS-polyacrylamide gel electrophoresis, and determination of the labeled proteins by autoradiography. By using Se-depleted rats and a 75Se-tracer with a high specific activity, Se compounds present at only very low concentrations could be detected. Besides the 13 Se-containing proteins previously described, for which apparent molecular masses of 12, 15, 18, 20, 22, 25, 28, 34, 56, 60, 65, 70, and 75 kD have been found here, a further 15 75Se-labeled bands, with apparent molecular masses of 8, 10, 15.5, 16.5, 24, 32, 34.5, 38, 40, 41, 44, 45, 46.5, 53 and 116 kD could be distinguished. Two-dimensional separation of the kidney homogenate proteins showed that some of the Se-containing bands could be resolved into several labeled spots. Most of the newly found compounds were present in various tissues, but with some the enrichment in certain tissues suggested specific sites of action.

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