PMID- 31827179 OWN - NLM STAT- MEDLINE DCOM- 20201106 LR - 20240422 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 9 IP - 1 DP - 2019 Dec 11 TI - Structural studies of the MMP-3 interaction with triple-helical collagen introduce new roles for the enzyme in tissue remodelling. PG - 18785 LID - 10.1038/s41598-019-55266-9 [doi] LID - 18785 AB - Matrix metalloproteinase-3 (MMP-3) participates in normal extracellular matrix turnover during embryonic development, organ morphogenesis and wound healing, and in tissue-destruction associated with aneurysm, cancer, arthritis and heart failure. Despite its inability to cleave triple-helical collagens, MMP-3 can still bind to them, but the mechanism, location and role of binding are not known. We used the Collagen Toolkits, libraries of triple-helical peptides that embrace the entire helical domains of collagens II and III, to map MMP-3 interaction sites. The enzyme recognises five sites on collagen II and three sites on collagen III. They share a glycine-phenylalanine-hydroxyproline/alanine (GFO/A) motif that is recognised by the enzyme in a context-dependent manner. Neither MMP-3 zymogen (proMMP-3) nor the individual catalytic (Cat) and hemopexin (Hpx) domains of MMP-3 interact with the peptides, revealing cooperative binding of both domains to the triple helix. The Toolkit binding data combined with molecular modelling enabled us to deduce the putative collagen-binding mode of MMP-3, where all three collagen chains make contacts with the enzyme in the valley running across both Cat and Hpx domains. The observed binding pattern casts light on how MMP-3 could regulate collagen turnover and compete with various collagen-binding proteins regulating cell adhesion and proliferation. FAU - Manka, Szymon W AU - Manka SW AD - Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK. s.manka@ucl.ac.uk. AD - MRC Prion Unit at UCL, Institute of Prion Diseases, 33 Cleveland Street, London, W1W 7FF, UK. s.manka@ucl.ac.uk. FAU - Bihan, Dominique AU - Bihan D AD - Department of Biochemistry, University of Cambridge, Cambridge, UK. FAU - Farndale, Richard W AU - Farndale RW AD - Department of Biochemistry, University of Cambridge, Cambridge, UK. LA - eng GR - WT_/Wellcome Trust/United Kingdom GR - RG/09/003/27122/BHF_/British Heart Foundation/United Kingdom GR - RG/15/4/31268/BHF_/British Heart Foundation/United Kingdom GR - 094470/Z/10/Z/WT_/Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191211 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 9007-34-5 (Collagen) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 3.4.24.7 (Matrix Metalloproteinase 1) SB - IM MH - Collagen/chemistry/*metabolism MH - Humans MH - Matrix Metalloproteinase 1/*metabolism MH - Matrix Metalloproteinase 3/*metabolism MH - Models, Molecular MH - Protein Binding MH - Protein Folding PMC - PMC6906530 COIS- The authors declare no competing interests. EDAT- 2019/12/13 06:00 MHDA- 2020/11/11 06:00 PMCR- 2019/12/11 CRDT- 2019/12/13 06:00 PHST- 2019/09/18 00:00 [received] PHST- 2019/11/14 00:00 [accepted] PHST- 2019/12/13 06:00 [entrez] PHST- 2019/12/13 06:00 [pubmed] PHST- 2020/11/11 06:00 [medline] PHST- 2019/12/11 00:00 [pmc-release] AID - 10.1038/s41598-019-55266-9 [pii] AID - 55266 [pii] AID - 10.1038/s41598-019-55266-9 [doi] PST - epublish SO - Sci Rep. 2019 Dec 11;9(1):18785. doi: 10.1038/s41598-019-55266-9.