Carbohydrates and fertilization in animals

Carbohydrates and fertilization in animals
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碳水化合物和动物受精

DOI:
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发表时间:
1990
影响因子:
2.5
通讯作者:
R. Ax
R. Ax
中科院分区:
生物学3区
文献类型:
--
作者:
David J. Miller;R. Ax

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在许多物种中经常使用的精卵识别机制涉及互补蛋白质-碳水化合物相互作用。通常的范例包括生殖道液或卵子上的复杂糖缀合物,其被精子表面上的碳水化合物结合蛋白识别。在精子获能、精子与卵细胞外基质和卵黄膜结合以及诱导顶体反应的步骤中使用各种糖缀合物。这些过程涉及几种类型的复杂糖缀合物,包括蛋白聚糖、乳糖胺聚糖、含硫酸化岩藻糖的糖缀合物和糖蛋白。活性糖缀合物之间似乎存在一些结构相似性;它们分子量大且复杂,并且它们通常被硫酸化、岩藻糖基化并通过丝氨酸或苏氨酸残基连接至蛋白质。在某些物种中,糖缀合物的蛋白质核心也通过限制碳水化合物仅与相关物种的精子结合而参与相互作用,可能是通过为相互作用提供适当的空间排列。在其他情况下,蛋白质核心似乎更多地充当碳水化合物部分的交联剂。这篇综述讨论了与受精有关的糖缀合物的类型和在精子上发现的互补凝集素样蛋白。
A frequently used mechanism for sperm–egg recognition in many species involves complementary protein–carbohydrate interaction. The usual paradigm includes complex glycoconjugates in reproductive tract fluids or on the eggs which are recognized by carbohydrate‐binding proteins on the sperm surface. Various glycocojugates are utilized in the steps of sperm capacitation, sperm binding to the egg extracellular matrix and vitelline membrane and induction of the acrosome reaction. Several types of complex glycoconjugates are involved in these processes, including proteoglycans, lactosaminoglycans, sulfated fucose‐containing glycoconjugates, and glycoproteins. There appear to be some structural similarities between active glycoconjugates; they are large in molecular weight and complex, and they are often sulfated, fucosylated, and attached to a protein through serine or threonine residues. In some species, the protein core of the glycoconjugates also participates in the interaction by limiting the binding of carbohydrates to sperm only of the relevant species, likely by providing the proper steric arrangement for the interaction. In other cases the protein core seems to serve more as a crosslinker of the carbohydrate moieties. This review discusses the types of glycoconjugates implicated in fertilization and the complementary lectin‐like proteins found on sperm.
兔精子膜自身抗原 RSA 的表征,作为凝集素样透明带结合蛋白。
DOI: 10.1016/0012-1606(88)90177-7
发表时间: 1988
影响因子: 2.7
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发表时间: 1988
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影响因子: 2.9
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