AMINO ACID COMPOSITION OF THE PROTEINS OF THE SERUM LIPOPROTEINS

摘要

Paper chromatographic studies on the amino acid composition of the protein moieties of the Sf 6 (hydrated density 1.035 g/ml), Sf 13 (hydrated density 1.015 g/ml), Sf 4-20 (hydrated density 1.006 to 1.04 g/ml), Sf 20-400 (hydrated density 1.006 to about 0.96 g/ml), high-density (containing mole¬cules of hydrated density 1.075 and 1.145 g/ml), and 1.145 g/ml hydrated density lipoproteins of serum indicate the proteins to be of quantitatively-identical amino acid composition, both with respect to type and percentage of amino acid present. These amino acids are valine, lysine, aspartic acid, glutamic acid, arginine, histidine, glycine, alanine, tyrosine, leucine, phenylalanine, proline, and cysteine. Methinoine may also be present, but in less percentage than the other amino acids.