View source for 1jiz


==Crystal Structure Analysis of human Macrophage Elastase MMP-12==
<StructureSection load='1jiz' size='340' side='right'caption='[[1jiz]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1jiz]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JIZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1JIZ FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CGS:N-HYDROXY-2(R)-[[(4-METHOXYPHENYL)SULFONYL](3-PICOLYL)AMINO]-3-METHYLBUTANAMIDE+HYDROCHLORIDE'>CGS</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Macrophage_elastase Macrophage elastase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.24.65 3.4.24.65] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1jiz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jiz OCA], [https://pdbe.org/1jiz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1jiz RCSB], [https://www.ebi.ac.uk/pdbsum/1jiz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1jiz ProSAT]</span></td></tr>
</table>
== Function ==
[[https://www.uniprot.org/uniprot/MMP12_HUMAN 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. 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ji/1jiz_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1jiz ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Human macrophage elastase (MMP-12) is a member of the family of matrix metalloproteinases (MMPs) that plays, like other members of the family, an important role in inflammatory processes contributing to tissue remodelling and destruction. In particular, a prominent role of MMP-12 in the destruction of elastin in the lung alveolar wall and the pathogenesis of emphysema has been suggested. It is therefore an attractive therapeutic target. We describe here the crystal structure of the catalytic domain of MMP-12 in complex with a hydroxamic acid inhibitor, CGS27023A. MMP-12 adopts the typical MMP fold and binds a structural zinc ion and three calcium ions in addition to the catalytic zinc ion. The enzyme structure shows an ordered N terminus close to the active site that is identical in conformation with the superactivated form of MMP-8. The S1'-specificity pocket is large and extends into a channel through the protein, which puts MMP-12 into the class of MMPs 3, 8 and 13 with large and open specificity pockets. The two crystallographically independent molecules adopt different conformations of the S1'-loop and its neighbouring loop due to differing crystal packing environments, suggesting that flexibility or the possibility of structural adjustments of these loop segments are intrinsic features of the MMP-12 structure and probably a common feature for all MMPs. The inhibitor binds in a bidentate fashion to the catalytic zinc ion. Its polar groups form hydrogen bonds in a substrate-like manner with beta-strand sIV of the enzyme, while the hydrophobic substituents are either positioned on the protein surface and are solvent-exposed or fill the upper part of the specificity pocket. The present structure enables us to aid the design of potent and selective inhibitors for MMP-12.

Crystal structure of human macrophage elastase (MMP-12) in complex with a hydroxamic acid inhibitor.,Nar H, Werle K, Bauer MM, Dollinger H, Jung B J Mol Biol. 2001 Sep 28;312(4):743-51. PMID:11575929<ref>PMID:11575929</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1jiz" style="background-color:#fffaf0;"></div>

==See Also==
*[[Matrix metalloproteinase 3D structures|Matrix metalloproteinase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Human]]
[[Category: Large Structures]]
[[Category: Macrophage elastase]]
[[Category: Bauer, M M.T]]
[[Category: Dollinger, H]]
[[Category: Jung, B]]
[[Category: Nar, H]]
[[Category: Werle, K]]
[[Category: Chronic obstructive pulmonary disease]]
[[Category: Hydrolase]]
[[Category: Matrix metalloproteinase]]
[[Category: Mmp-12]]