GLYCOPEPTIDE FROM POSTERIOR LOBE OF PIG PITUITARIES .1. ISOLATION AND CHARACTERIZATION

GLYCOPEPTIDE FROM POSTERIOR LOBE OF PIG PITUITARIES .1. ISOLATION AND CHARACTERIZATION
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DOI:
10.1111/j.1432-1033.1972.tb01918.x
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发表时间:
1972-01-01
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
通讯作者:
HOLWERDA, DA
HOLWERDA, DA
中科院分区:
其他
文献类型:
--
作者:
HOLWERDA, DA

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猪垂体后叶提取物含有分子量为3200(± 5%)的糖肽。糖肽的数量与催产素和加压素的数量级相同,肽部分由17个氨基酸残基组成:天冬氨酸或天冬酰胺(3)、苏氨酸(1)、丝氨酸(3)、脯氨酸(1)、甘氨酸(2)、丙氨酸(3)、亮氨酸(3)和精氨酸(1)。碳水化合物部分,约55重量%,由岩藻糖(1)、半乳糖(1)、甘露糖(3)和葡糖胺(4)组成。该糖肽除了具有轻微的脂解活性外,不具有已知的垂体生理活性。
An extract from the posterior lobes of pig pituitaries contains a glycopeptide with a molecular mass of 3200 (± 5%). The glycopeptide is present in amounts of the same order as the hormones oxytocin and vasopressin.The peptide portion is composed of seventeen amino acid residues: aspartic acid or asparagine (3), threonine (1), serine (3), proline (1), glycine (2), alanine (3), leucine (3) and arginine (1). The carbohydrate portion, about 55% by weight, is composed of fucose (1), galactose (1), mannose (3) and glucosamine (4). The glycopeptide exhibits none of the known physiological activities of hypophysis except for a slight lipolytic activity.