View source for 7der


==Lysozyme alone in H2O==
<StructureSection load='7der' size='340' side='right'caption='[[7der]], [[Resolution|resolution]] 1.03&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7DER OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7DER FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.03&#8491;</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>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></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=7der FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7der OCA], [https://pdbe.org/7der PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7der RCSB], [https://www.ebi.ac.uk/pdbsum/7der PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7der ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
Lysozyme hydrolyzes the glycosidic bonds between N-acetylmuramic acid and N-acetylglucosamine in peptidoglycans located in the bacterial cell wall. The mechanism of the hydrolysis reaction of lysozyme was first studied more than 50 years ago; however, it has not yet been fully elucidated and various mechanisms are still being investigated. One reaction system that has commonly been proposed is that the lysozyme intermediate undergoes covalent ligand binding during hydrolysis. However, these findings resulted from experiments performed under laboratory conditions using fluorine-based ligands, which facilitate the formation of covalent bonds between the ligands and the catalytic side chain of lysozyme. More recently, high-resolution X-ray structural analysis was used to study the complex of lysozyme with an N-acetylglucosamine tetramer. As a result, the carboxyl group of Asp52 was found to form a relatively strong hydrogen-bond network and had difficulty binding covalently to C1 of the carbohydrate ring. To confirm this hydrogen-bond network, neutron test measurements were successfully performed to a resolution of better than 1.9 A.

Recent structural insights into the mechanism of lysozyme hydrolysis.,Tanaka I, Nishinomiya R, Goto R, Shimazaki S, Chatake T Acta Crystallogr D Struct Biol. 2021 Mar 1;77(Pt 3):288-292. doi:, 10.1107/S2059798321000346. Epub 2021 Feb 19. PMID:33645532<ref>PMID:33645532</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
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==See Also==
*[[Lysozyme 3D structures|Lysozyme 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Chatake T]]
[[Category: Tanaka I]]