Using synthetic peptides and recombinant collagen to understand DDR-collagen interactions
- PMID: 30880148
- DOI: 10.1016/j.bbamcr.2019.03.005
Using synthetic peptides and recombinant collagen to understand DDR-collagen interactions
Abstract
The discoidin domain receptors, DDR1 and DDR2, are a subfamily of receptor tyrosine kinases that are activated upon binding to collagen. DDR-collagen interactions play an important role in cell proliferation and migration. Over the past few decades, synthetic peptides and recombinant collagen have been developed as tools to study the biophysical characteristics of collagen and various protein-collagen interactions. Herein we review how these techniques have been used to understand DDR-collagen interactions. Using synthetic collagen-like peptides, the GVM-GFO motif has been found to be the major binding site on collagens II and III for DDR1 and DDR2. An X-ray co-crystal structure of the DDR2 DS domain bound to a synthetic collagen-like peptide containing the GVM-GFO motif further provides molecular details of the DDR-collagen interactions. Recombinant collagen has also been used to provide further validation of the GVM-GFO binding motif. Although GVM-GFO has been defined as the minimal binding site, in synthetic peptide studies at least two triplets N-terminal to the essential GVM-GFO binding motif in collagen III sequence are needed for DDR2 activation at high peptide concentrations.
Keywords: Collagen; DDR1; DDR2; Recombinant collagen; Synthetic collagen-like peptides.
Copyright © 2019 Elsevier B.V. All rights reserved.
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