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. 1970 Jul;118(3):537-42.
doi: 10.1042/bj1180537.

The isolation and compsotion of two phosphoproteins from hen's egg

R C Clark

The isolation and compsotion of two phosphoproteins from hen's egg

R C Clark. Biochem J. 1970 Jul.

Abstract

1. Phosvitin extracted from domestic hen's-egg yolk was resolved on Sephadex G-100 into two phosphoprotein components. 2. The major component has a molecular weight of about 3.4x10(4) and alanine as an N-terminal residue. Glucosamine is present, but tyrosine is virtually absent. 3. The minor component has a molecular weight of about 2.8x10(4) and lysine as an N-terminal residue. Missing residues are glucosamine, methionine and leucine. Lysine, histidine, threonine, glycine, phenylalanine and tyrosine contents differ significantly from those of the major component. 4. Sephadex G-100 also removes small amounts of an impurity with a much higher molecular weight.

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