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Fibronectins Connect Cells with ECM01:25

Fibronectins Connect Cells with ECM

Fibronectin is an adhesive glycoprotein present in the extracellular matrix of embryogenic and adult tissue. These molecules primarily aid in regulating cell motility and attachment. A fibronectin molecule is composed of two identical polypeptide chains attached to each other by a pair of disulfide bonds at the C-terminal.
Both proteoglycans and collagen are attached to fibronectin proteins, which, in turn, are attached to integrin proteins. These integrin proteins interact with transmembrane...

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Affinity Purification of a Fibrinolytic Enzyme from Sipunculus nudus
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Purification of fibronectin.

S K Akiyama1

  • 1Chapel Hill, North Carolina, USA.

Current Protocols in Cell Biology
|January 30, 2008
PubMed
Summary
This summary is machine-generated.

This study details fibronectin purification from plasma and cells using affinity chromatography. Purified fibronectin is valuable for cell adhesion and migration research.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Protein Chemistry

Background:

  • Fibronectin is a crucial multifunctional adhesive glycoprotein involved in cell adhesion and migration.
  • Understanding fibronectin's role requires pure, well-characterized samples.
  • Existing purification methods can be complex or yield low purity.

Purpose of the Study:

  • To describe a straightforward method for purifying fibronectin.
  • To obtain high-purity fibronectin from both plasma and cell sources.
  • To provide fibronectin suitable for cell-based assays.

Main Methods:

  • Affinity chromatography using simple techniques.
  • Purification from plasma.
  • Purification from cell surfaces and conditioned medium.

Main Results:

  • Fibronectin was successfully purified to relatively high purity.
  • The method is applicable to both plasma-derived and cell-derived fibronectin.
  • Purified fibronectin is suitable for use in biological assays.

Conclusions:

  • Simple affinity chromatography is an effective method for fibronectin purification.
  • High-purity fibronectin can be readily obtained for research applications.
  • This protocol facilitates studies on cell adhesion and migration.