Peptide ligands for the fibronectin type II modules of matrix metalloproteinase 2 (MMP-2)
| Autor: | Mária Trexler, László Patthy, Miguel Llinás, Marion Gehrmann, Klára Briknarová |
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| Rok vydání: | 2002 |
| Předmět: |
Phage display
food.ingredient Molecular Sequence Data Peptide binding Matrix metalloproteinase Ligands Biochemistry Gelatin food Peptide Library Molecule Humans Amino Acid Sequence Molecular Biology Binding Sites biology Chemistry Active site Cell Biology Peptide Fragments Fibronectins Protein Structure Tertiary Fibronectin biology.protein Matrix Metalloproteinase 2 Collagen Sequence motif |
| Zdroj: | The Journal of biological chemistry. 278(14) |
| ISSN: | 0021-9258 |
| Popis: | The interaction of matrix metalloproteinase 2 (MMP-2) with gelatin is mediated by three repeats homologous to fibronectin type II (FN2) modules, which are inserted in the catalytic domain in proximity of the active site. We screened a random 15-mer phage display library to identify peptides that interact with the FN2 modules of MMP-2. Interestingly, the selected peptides are not gelatin-like and do not share a common, obvious sequence motif. However, they contain a high proportion of aromatic residues. The interactions of two peptides, WHWRH0RIPLQLAAGR and THSHQWRHHQFPAPT, with constructs comprising the in-tandem first and second and second and third FN2 modules of MMP-2 (Col-12 and Col-23, respectively) were characterized by NMR. Both peptides interact with Col-12 and Col-23 with apparent association constants in the mm −1 range. Peptide binding results in perturbation of signals from residues located in the gelatin-binding pocket and flexible parts of the molecule. Although the former finding suggests that the gelatin-binding site is involved in the contact, the interpretation of the latter is less straightforward and may well reflect both the direct and indirect effects of the interaction. |
| Databáze: | OpenAIRE |
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