Mészáros M, Samu J
Acta Biochim Biophys Acad Sci Hung. 1979;14(1-2):75-80.
Two glycopeptides with identical amino acid sequence and carbohydrate composition, but of different sialic acid content were isolated from a combined tryptic-chymotryptic hydrolysate of bovine fibrinogen. Glycopeptide 1 contained two moles, glycopeptide 2 one mole of sialic acid. Both of them may have been derived from the gamma-polypeptide chain according to their amino acid sequence: Gln-Val-Glu-Asn-Lys.
从牛血纤蛋白原的胰蛋白酶-糜蛋白酶联合水解物中分离出两种糖肽，它们具有相同的氨基酸序列和碳水化合物组成，但唾液酸含量不同。糖肽1含有两摩尔唾液酸，糖肽2含有一摩尔唾液酸。根据它们的氨基酸序列Gln-Val-Glu-Asn-Lys，两者可能都源自γ-多肽链。
