7avg: Difference between revisions
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<StructureSection load='7avg' size='340' side='right'caption='[[7avg]], [[Resolution|resolution]] 1.00Å' scene=''> | <StructureSection load='7avg' size='340' side='right'caption='[[7avg]], [[Resolution|resolution]] 1.00Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[7avg]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/ | <table><tr><td colspan='2'>[[7avg]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7AVG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7AVG FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1Å</td></tr> | ||
<tr id=' | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=NO3:NITRATE+ION'>NO3</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=7avg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7avg OCA], [https://pdbe.org/7avg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7avg RCSB], [https://www.ebi.ac.uk/pdbsum/7avg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7avg 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=7avg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7avg OCA], [https://pdbe.org/7avg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7avg RCSB], [https://www.ebi.ac.uk/pdbsum/7avg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7avg ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/LYSC_CHICK LYSC_CHICK] Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. Has bacteriolytic activity against M.luteus.<ref>PMID:22044478</ref> | |||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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</div> | </div> | ||
<div class="pdbe-citations 7avg" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 7avg" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Lysozyme 3D structures|Lysozyme 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Gallus gallus]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Erba Boeri E]] | ||
[[Category: Forsyth VT]] | |||
[[Category: Forsyth | [[Category: Haertlein M]] | ||
[[Category: Haertlein | [[Category: Langkilde AE]] | ||
[[Category: Langkilde | [[Category: Larsen S]] | ||
[[Category: Larsen | [[Category: Laux V]] | ||
[[Category: Laux | [[Category: Mossou E]] | ||
[[Category: Mossou | [[Category: Ramos J]] | ||
[[Category: Ramos | |||
Latest revision as of 15:16, 1 February 2024
Perdeuterated hen egg-white lysozyme at 100 KPerdeuterated hen egg-white lysozyme at 100 K
Structural highlights
FunctionLYSC_CHICK Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. Has bacteriolytic activity against M.luteus.[1] Publication Abstract from PubMedThis structural and biophysical study exploited a method of perdeuterating hen egg-white lysozyme based on the expression of insoluble protein in Escherichia coli followed by in-column chemical refolding. This allowed detailed comparisons with perdeuterated lysozyme produced in the yeast Pichia pastoris, as well as with unlabelled lysozyme. Both perdeuterated variants exhibit reduced thermal stability and enzymatic activity in comparison with hydrogenated lysozyme. The thermal stability of refolded perdeuterated lysozyme is 4.9 degrees C lower than that of the perdeuterated variant expressed and secreted in yeast and 6.8 degrees C lower than that of the hydrogenated Gallus gallus protein. However, both perdeuterated variants exhibit a comparable activity. Atomic resolution X-ray crystallographic analyses show that the differences in thermal stability and enzymatic function are correlated with refolding and deuteration effects. The hydrogen/deuterium isotope effect causes a decrease in the stability and activity of the perdeuterated analogues; this is believed to occur through a combination of changes to hydrophobicity and protein dynamics. The lower level of thermal stability of the refolded perdeuterated lysozyme is caused by the unrestrained Asn103 peptide-plane flip during the unfolded state, leading to a significant increase in disorder of the Lys97-Gly104 region following subsequent refolding. An ancillary outcome of this study has been the development of an efficient and financially viable protocol that allows stable and active perdeuterated lysozyme to be more easily available for scientific applications. Structural insights into protein folding, stability and activity using in vivo perdeuteration of hen egg-white lysozyme.,Ramos J, Laux V, Haertlein M, Boeri Erba E, McAuley KE, Forsyth VT, Mossou E, Larsen S, Langkilde AE IUCrJ. 2021 Mar 6;8(Pt 3):372-386. doi: 10.1107/S2052252521001299. eCollection, 2021 May 1. PMID:33953924[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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