首页> 外文期刊>International review of cell and molecular biology >Interactions between heparan sulfate and proteins-design and functional implications.
【24h】

Interactions between heparan sulfate and proteins-design and functional implications.

机译:硫酸乙酰肝素和蛋白质之间的相互作用-设计和功能含义。

获取原文
           

摘要

Heparan sulfate (HS) proteoglycans at cell surfaces and in the extracellular matrix of most animal tissues are essential in development and homeostasis, and variously implicated in disease processes. Functions of HS polysaccharide chains depend on ionic interactions with a variety of proteins including growth factors and their receptors. Negatively charged sulfate and carboxylate groups are arranged in various types of domains, generated through strictly regulated biosynthetic reactions and with enormous potential for structural variability. The level of specificity of HS-protein interactions is assessed through binding experiments in vitro using saccharides of defined composition, signaling assays in cell culture, and targeted disruption of genes for biosynthetic enzymes followed by phenotype analysis. While some protein ligands appear to require strictly defined HS structure, others bind to variable saccharide domains without any apparent dependence on distinct saccharide sequence. These findings raise intriguing questions concerning the functional significance of regulation in HS biosynthesis.
机译:大多数动物组织的细胞表面和细胞外基质中的硫酸乙酰肝素(HS)蛋白聚糖在发育和体内平衡中至关重要,并与疾病过程有多种关系。 HS多糖链的功能取决于与包括生长因子及其受体在内的多种蛋白质的离子相互作用。带负电的硫酸盐和羧酸盐基团排列在各种类型的域中,这些域是通过严格调节的生物合成反应生成的,并且具有巨大的结构变异潜力。 HS-蛋白相互作用的特异性水平是通过体外结合实验确定的,其中结合的实验采用确定成分的糖类,细胞培养中的信号传导测定以及针对生物合成酶的基因靶向破坏,然后进行表型分析。虽然某些蛋白质配体似乎需要严格定义的HS结构,但其他蛋白质配体结合可变的糖结构域,而对明显的糖序列没有任何明显的依赖性。这些发现提出了有关HS生物合成中调节功能的重要意义的有趣问题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号