4h49 | pdb_00004h49

Crystal structure of the catalytic domain of MMP-12 in complex with a twin inhibitor.

spinqualitylabelsall models 4h49, resolution 2.16Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4h49 is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.16Å Ligands: CA, DMS, GOL, L29, PEG, PGO, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function MMP12_HUMAN May be involved in tissue injury and remodeling. Has significant elastolytic activity. Can accept large and small amino acids at the P1' site, but has a preference for leucine. Aromatic or hydrophobic residues are preferred at the P1 site, with small hydrophobic residues (preferably alanine) occupying P3. Publication Abstract from PubMed Homodimerization is important in signal transduction and can play a crucial role in many other biological systems. To obtaining structural information for the design of molecules able to control the signalization pathways, the proteins involved will have to be crystallized in complex with ligands that induce dimerization. Bi-functional drugs have been generated by linking two ligands together chemically and the relative crystallizability of complexes with mono-functional and bi-functional ligands has been evaluated. There are problems associated with crystallization with such ligands, but overall, the advantages appear to be greater than the drawbacks. The study involves two matrix metalloproteinases, MMP-12 and MMP-9. Using flexible and rigid linkers we show that it is possible to control the crystal packing and that by changing the ligand-enzyme stoichiometric ratio, one can toggle between having one bi-functional ligand binding to two enzymes and having the same ligand bound to each enzyme. The nature of linker and its point of attachment on the ligand can be varied to aid crystallization, and such variations can also provide valuable structural information about the interactions made by the linker with the protein. We report here the crystallization and structure determination of seven ligand-dimerized complexes. These results suggest that the use of bi-functional drugs can be extended beyond the realm of protein dimerization to include all drug design projects. Crystallization of bi-functional ligand protein complexes.,Antoni C, Vera L, Devel L, Catalani MP, Czarny B, Cassar-Lajeunesse E, Nuti E, Rossello A, Dive V, Stura EA J Struct Biol. 2013 Apr 6. pii: S1047-8477(13)00086-5. doi:, 10.1016/j.jsb.2013.03.015. PMID:23567804 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Matrix metalloproteinase 3D structures

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