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| | <StructureSection load='4n6l' size='340' side='right'caption='[[4n6l]], [[Resolution|resolution]] 1.95Å' scene=''> | | <StructureSection load='4n6l' size='340' side='right'caption='[[4n6l]], [[Resolution|resolution]] 1.95Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4n6l]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4N6L OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4N6L FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4n6l]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4N6L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4N6L FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4n6m|4n6m]], [[4n6n|4n6n]], [[4n6o|4n6o]]</td></tr> | + | </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=4n6l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4n6l OCA], [https://pdbe.org/4n6l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4n6l RCSB], [https://www.ebi.ac.uk/pdbsum/4n6l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4n6l ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CST6 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
| + | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4n6l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4n6l OCA], [http://pdbe.org/4n6l PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4n6l RCSB], [http://www.ebi.ac.uk/pdbsum/4n6l PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4n6l ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/CYTM_HUMAN CYTM_HUMAN]] Shows moderate inhibition of cathepsin B but is not active against cathepsin C. | + | [https://www.uniprot.org/uniprot/CYTM_HUMAN CYTM_HUMAN] Shows moderate inhibition of cathepsin B but is not active against cathepsin C. |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Brandstetter, H]] | + | [[Category: Brandstetter H]] |
| - | [[Category: Dall, E]] | + | [[Category: Dall E]] |
| - | [[Category: Asparaginyl endopeptidase]]
| + | |
| - | [[Category: Cancer]]
| + | |
| - | [[Category: Cathepsin]]
| + | |
| - | [[Category: Cystatin fold]]
| + | |
| - | [[Category: Cysteine protease inhibitor]]
| + | |
| - | [[Category: Hydrolase inhibitor]]
| + | |
| - | [[Category: Legumain]]
| + | |
| - | [[Category: Papain]]
| + | |
| - | [[Category: Protease inhibitor]]
| + | |
| - | [[Category: Reactive center loop]]
| + | |
| Structural highlights
Function
CYTM_HUMAN Shows moderate inhibition of cathepsin B but is not active against cathepsin C.
Publication Abstract from PubMed
Peptide ligases expand the repertoire of genetically encoded protein architectures by synthesizing new peptide bonds, energetically driven by ATP or NTPs. Here, we report the discovery of a genuine ligase activity in human legumain (AEP) which has important roles in immunity and tumor progression that were believed to be due to its established cysteine protease activity. Defying dogma, the ligase reaction is independent of the catalytic cysteine but exploits an endogenous energy reservoir that results from the conversion of a conserved aspartate to a metastable aspartimide. Legumain's dual protease-ligase activities are pH- and thus localization controlled, dominating at acidic and neutral pH, respectively. Their relevance includes reversible on-off switching of cystatin inhibitors and enzyme (in)activation, and may affect the generation of three-dimensional MHC epitopes. The aspartate-aspartimide (succinimide) pair represents a new paradigm of coupling endergonic reactions in ATP-scarce environments.
Structure and Mechanism of an Aspartimide-Dependent Peptide Ligase in Human Legumain.,Dall E, Fegg JC, Briza P, Brandstetter H Angew Chem Int Ed Engl. 2015 Jan 28. doi: 10.1002/anie.201409135. PMID:25630877[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Dall E, Fegg JC, Briza P, Brandstetter H. Structure and Mechanism of an Aspartimide-Dependent Peptide Ligase in Human Legumain. Angew Chem Int Ed Engl. 2015 Jan 28. doi: 10.1002/anie.201409135. PMID:25630877 doi:http://dx.doi.org/10.1002/anie.201409135
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