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Purification of fibronectin

S K Akiyama1

  • 1Chapel Hill, North Carolina, USA.

Current Protocols in Cell Biology
|January 30, 2008
PubMed

Abstract:

This unit describes the purification of the multifunctional adhesive glycoprotein fibronectin from plasma or of cell-derived fibronectin from cell surfaces and from conditioned medium. Fibronectin can be used in cell adhesion and migration assays, and can be obtained in relatively high purity using simple affinity chromatography techniques.

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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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