Ohara S, Ishihara K, Hotta K
Comp Biochem Physiol B. 1986;83(2):273-5. doi: 10.1016/0305-0491(86)90365-2.
The density of mucus glycoprotein compared to that of the corpus, antrum and duodenum was; 1.52, 1.49 and 1.57 g/ml respectively. Carbohydrate composition of gastrointestinal mucus glycoprotein consisted of N-acetylgalactosamine, N-acetylglucosamine, galactose, fucose and sialic acid. Ratios of carbohydrate composition among corpus, antral and duodenal mucus glycoproteins differed. The average length of an oligosaccharide was found to be about 12-13, 14 and 10 sugars in the corpus, antrum and duodenum, respectively. In the corpus, the amino acid content was found to have the following quantitative order: Thr greater than Ser greater than Glx = Pro; in the antrum: Thr greater than Ser greater than Glx; and in the duodenum: Thr greater than Ser greater than Pro. Corpus, antral and duodenal mucus glycoproteins have the blood-group A antigen; antral mucus glycoprotein in particular exhibited strong blood-group A activity.
与胃体、胃窦和十二指肠相比，黏液糖蛋白的密度分别为1.52、1.49和1.57克/毫升。胃肠道黏液糖蛋白的碳水化合物组成包括N-乙酰半乳糖胺、N-乙酰葡糖胺、半乳糖、岩藻糖和唾液酸。胃体、胃窦和十二指肠黏液糖蛋白的碳水化合物组成比例不同。发现寡糖的平均长度在胃体、胃窦和十二指肠中分别约为12 - 13、14和10个糖。在胃体中，氨基酸含量具有以下定量顺序：苏氨酸＞丝氨酸＞谷氨酰胺 = 脯氨酸；在胃窦中：苏氨酸＞丝氨酸＞谷氨酰胺；在十二指肠中：苏氨酸＞丝氨酸＞脯氨酸。胃体、胃窦和十二指肠黏液糖蛋白具有A血型抗原；特别是胃窦黏液糖蛋白表现出较强的A血型活性。
