5f16: Difference between revisions
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==CTA-modified hen egg-white lysozyme== | |||
<StructureSection load='5f16' size='340' side='right' caption='[[5f16]], [[Resolution|resolution]] 1.20Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5f16]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5F16 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5F16 FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5f14|5f14]]</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lysozyme Lysozyme], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.17 3.2.1.17] </span></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=5f16 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5f16 OCA], [http://pdbe.org/5f16 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5f16 RCSB], [http://www.ebi.ac.uk/pdbsum/5f16 PDBsum]</span></td></tr> | |||
</table> | |||
== Function == | |||
[[http://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;"> | |||
== Publication Abstract from PubMed == | |||
Polymers are often conjugated to proteins to improve stability; however, the impact of polymer chain length and functional groups on protein structure and function is not well understood. Here, we use RAFT polymerization to grow polymers of different lengths and functionality from a short acrylamide oligomer with a RAFT end group conjugated to lysozyme. We show by X-ray crystallography that enzyme structure is minimally impacted by modification with the RAFT end group. Significant activity toward the negatively charged Micrococcus lysodeicticus cell wall was maintained when lysozyme was modified with cationic polymers. Thermal and chemical stability of the conjugates were characterized using differential scanning fluorimetry and tryptophan fluorescence. All conjugates had a lower melting temperature; however, conjugates containing ionic or substrate mimicking polymers were more resistant to denaturation by guanidine hydrochloride. Our results demonstrate that tailoring polymer functionality can improve conjugate activity and minimize enzymatic inactivation by denaturants. | |||
Investigating the Impact of Polymer Functional Groups on the Stability and Activity of Lysozyme-Polymer Conjugates.,Lucius M, Falatach R, McGlone C, Makaroff K, Danielson AP, Williams C, Nix JC, Konkolewicz D, Page RC, Berberich JA Biomacromolecules. 2016 Feb 11. PMID:26866284<ref>PMID:26866284</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: Nix, J | <div class="pdbe-citations 5f16" style="background-color:#fffaf0;"></div> | ||
[[Category: Page, R | == References == | ||
[[Category: | <references/> | ||
__TOC__ | |||
</StructureSection> | |||
[[Category: Gallus gallus]] | |||
[[Category: Lysozyme]] | |||
[[Category: McGlone, C]] | |||
[[Category: Nix, J C]] | |||
[[Category: Page, R C]] | |||
[[Category: Hydrolase]] | |||
Revision as of 21:08, 26 February 2016
CTA-modified hen egg-white lysozymeCTA-modified hen egg-white lysozyme
Structural highlights
Function[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.[1] Publication Abstract from PubMedPolymers are often conjugated to proteins to improve stability; however, the impact of polymer chain length and functional groups on protein structure and function is not well understood. Here, we use RAFT polymerization to grow polymers of different lengths and functionality from a short acrylamide oligomer with a RAFT end group conjugated to lysozyme. We show by X-ray crystallography that enzyme structure is minimally impacted by modification with the RAFT end group. Significant activity toward the negatively charged Micrococcus lysodeicticus cell wall was maintained when lysozyme was modified with cationic polymers. Thermal and chemical stability of the conjugates were characterized using differential scanning fluorimetry and tryptophan fluorescence. All conjugates had a lower melting temperature; however, conjugates containing ionic or substrate mimicking polymers were more resistant to denaturation by guanidine hydrochloride. Our results demonstrate that tailoring polymer functionality can improve conjugate activity and minimize enzymatic inactivation by denaturants. Investigating the Impact of Polymer Functional Groups on the Stability and Activity of Lysozyme-Polymer Conjugates.,Lucius M, Falatach R, McGlone C, Makaroff K, Danielson AP, Williams C, Nix JC, Konkolewicz D, Page RC, Berberich JA Biomacromolecules. 2016 Feb 11. PMID:26866284[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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