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| | <StructureSection load='6fxo' size='340' side='right'caption='[[6fxo]], [[Resolution|resolution]] 2.50Å' scene=''> | | <StructureSection load='6fxo' size='340' side='right'caption='[[6fxo]], [[Resolution|resolution]] 2.50Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6fxo]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Staam Staam]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6FXO OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6FXO FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6fxo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus_subsp._aureus_Mu50 Staphylococcus aureus subsp. aureus Mu50]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6FXO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6FXO FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">atl, nag, SAV1052 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=158878 STAAM])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6fxo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6fxo OCA], [http://pdbe.org/6fxo PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6fxo RCSB], [http://www.ebi.ac.uk/pdbsum/6fxo PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6fxo ProSAT]</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=6fxo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6fxo OCA], [https://pdbe.org/6fxo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6fxo RCSB], [https://www.ebi.ac.uk/pdbsum/6fxo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6fxo ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/ATL_STAAM ATL_STAAM]] Endohydrolysis of the di-N-acetylchitobiosyl unit in high-mannose glycopeptides and glycoproteins containing the -[(Man)5(GlcNAc)2]-Asn structure. One N-acetyl-D-glucosamine residue remains attached to the protein; the rest of the oligosaccharide is released intact. Cleaves the peptidoglycan connecting the daughter cells at the end of the cell division cycle, resulting in the separation of the two newly divided cells. Acts as an autolysin in penicillin-induced lysis (By similarity). | + | [https://www.uniprot.org/uniprot/ATL_STAAM ATL_STAAM] Endohydrolysis of the di-N-acetylchitobiosyl unit in high-mannose glycopeptides and glycoproteins containing the -[(Man)5(GlcNAc)2]-Asn structure. One N-acetyl-D-glucosamine residue remains attached to the protein; the rest of the oligosaccharide is released intact. Cleaves the peptidoglycan connecting the daughter cells at the end of the cell division cycle, resulting in the separation of the two newly divided cells. Acts as an autolysin in penicillin-induced lysis (By similarity). |
| - | <div style="background-color:#fffaf0;">
| + | |
| - | == Publication Abstract from PubMed ==
| + | |
| - | To achieve productive binding, enzymes and substrates must align their geometries to complement each other along an entire substrate binding site, which may require enzyme flexibility. In pursuit of novel drug targets for the human pathogen S. aureus, we studied peptidoglycan N-acetylglucosaminidases, whose structures are composed of two domains forming a V-shaped active site cleft. Combined insights from crystal structures supported by site-directed mutagenesis, modeling, and molecular dynamics enabled us to elucidate the substrate binding mechanism of SagB and AtlA-gl. This mechanism requires domain sliding from the open form observed in their crystal structures, leading to polysaccharide substrate binding in the closed form, which can enzymatically process the bound substrate. We suggest that these two hydrolases must exhibit unusual extents of flexibility to cleave the rigid structure of a bacterial cell wall.
| + | |
| - | | + | |
| - | Domain sliding of two Staphylococcus aureus N-acetylglucosaminidases enables their substrate-binding prior to its catalysis.,Pintar S, Borisek J, Usenik A, Perdih A, Turk D Commun Biol. 2020 Apr 20;3(1):178. doi: 10.1038/s42003-020-0911-7. PMID:32313083<ref>PMID:32313083</ref>
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| - | | + | |
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | |
| - | </div>
| + | |
| - | <div class="pdbe-citations 6fxo" style="background-color:#fffaf0;"></div>
| + | |
| - | == References ==
| + | |
| - | <references/>
| + | |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Staam]] | + | [[Category: Staphylococcus aureus subsp. aureus Mu50]] |
| - | [[Category: Pintar, S]] | + | [[Category: Pintar S]] |
| - | [[Category: Turk, D]] | + | [[Category: Turk D]] |
| - | [[Category: Autolysin]]
| + | |
| - | [[Category: Gh73]]
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| - | [[Category: Glycoside hydrolase family 73]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Peptidoglycan hydrolase]]
| + | |
