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- W2026978096 abstract "Background: Stromelysin belongs to a family of zinc-dependent endopeptidases referred to as matrix metalloproteinases (MMPs, matrixins) because of their capacity for selective degradation of various components of the extracellular matrix. Matrixins play key roles in diseases as diverse as arthritis and cancer and hence are important targets for therapeutic intervention.Results The crystal structure of the stromelysin catalytic domain (SCD) with bound hydroxamate inhibitor, solved by multiple isomorphous replacement, shows a deep S1′ specificity pocket which explains differences in inhibitor binding between the collagenases and stromelysin. The binding of calcium ions by loops at the two ends of a β-strand which marks the boundary of the active site provides a structural rationale for the importance of these cations for stability and catalytic activity. Major differences between the matrixins are clustered in two regions forming the entrance to the active site and hence may be determinants of substrate selectivity.Conclusion Structural comparisons of SCD with representative members of the metalloproteinase superfamily clearly highlight the conservation of key secondary structural elements, in spite of major variations in the sequences including insertions and deletions of functional domains. However, the three-dimensional structure of SCD, which is generally closely related to the collagenases, shows significant differences not only in the peripheral regions but also in the specificity pockets; these latter differences should facilitate the rational design of specific inhibitors." @default.
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- W2026978096 date "1996-04-01" @default.
- W2026978096 modified "2023-10-02" @default.
- W2026978096 title "X-ray structure of a hydroxamate inhibitor complex of stromelysin catalytic domain and its comparison with members of the zinc metalloproteinase superfamily" @default.
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- W2026978096 doi "https://doi.org/10.1016/s0969-2126(96)00043-3" @default.
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