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The Extracellular Matrix01:42

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Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
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In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
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The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
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In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
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Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
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将细胞外拼图拼接在一起.

Daniel J Leahy1

  • 1Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA. dleahy@jhmi.edu

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此摘要是机器生成的。

研究人员开发了一种新的高通量检测法,用于识别细胞外蛋白相互作用. 这种方法成功地揭示了多种新型相互作用在Drosophila中,推进了蛋白质相互作用研究.

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科学领域:

  • 生物化学 生物化学
  • 基因组学就是基因组学.
  • 蛋白质组学是指蛋白质组学.

背景情况:

  • 识别蛋白相互作用对于理解细胞功能至关重要.
  • 目前的大规模查方法对于真核细胞细胞外蛋白是低效的.

研究的目的:

  • 开发一种高通量测试,专门用于检测细胞外蛋白相互作用.
  • 为了识别Drosophila.三大超级家族内的新型蛋白质相互作用.

主要方法:

  • 开发一种新的高通量选试验.
  • 该试验的应用是为了研究Drosophila中的蛋白相互作用.

主要成果:

  • 该试验成功地确定了大量新的细胞外蛋白相互作用.
  • 在Drosophila中的三个主要蛋白质超级家族中发现了新的相互作用.

结论:

  • 开发的试验有效用于大规模识别细胞外蛋白相互作用.
  • 这项工作为在Drosophila.中蛋白相互作用的更全面的屏幕提供了基础.