1kxw

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[[Image:1kxw.gif|left|200px]]
 
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{{Structure
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==ANALYSIS OF THE STABILIZATION OF HEN LYSOZYME WITH THE HELIX DIPOLE AND CHARGED SIDE CHAINS==
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|PDB= 1kxw |SIZE=350|CAPTION= <scene name='initialview01'>1kxw</scene>, resolution 1.96&Aring;
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<StructureSection load='1kxw' size='340' side='right'caption='[[1kxw]], [[Resolution|resolution]] 1.96&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND=
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<table><tr><td colspan='2'>[[1kxw]] 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=1KXW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KXW FirstGlance]. <br>
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|ACTIVITY= <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>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.96&#8491;</td></tr>
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|GENE= HEN LYSOZYME ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9031 Gallus gallus])
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1kxw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kxw OCA], [https://pdbe.org/1kxw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kxw RCSB], [https://www.ebi.ac.uk/pdbsum/1kxw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kxw ProSAT]</span></td></tr>
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|DOMAIN=
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</table>
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|RELATEDENTRY=
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== Function ==
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1kxw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kxw OCA], [http://www.ebi.ac.uk/pdbsum/1kxw PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1kxw RCSB]</span>
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[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>
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}}
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kx/1kxw_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1kxw ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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In the N-terminal region of the alpha-helix of the c-type lysozymes, two Asx residues exist at the 18th and 27th positions. Hen lysozyme has Asp18/Asn27 (18D/27N), and we prepared three mutant lysozymes, Asn18/Asn27 (18N/27N), Asn18/Asp27 (18N/27D), and Asp18/Asp27 (18D/27D). The stability of the wild-type (18D/27N) lysozyme supported the existence of a hydrogen bond between the side chain of Asp18 and the amide group at the N1 position in the alpha-helix, while the stability of the 18N/27D lysozyme supported the presence of the capping box between the Ser24 (N-cap) and Asp27 residues. Although electrostatic repulsion was observed between Asp18 and Asp27 residues in 18D/27D lysozyme, the dissociation of each residue contributed to stabilizing the B-helix in 18D/27D lysozyme through hydrogen bonding and charge-helix macrodipole interaction. This is the first evidence that two neighboring negative charges at the N-terminus of the helix both increased the stability of the protein.
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'''ANALYSIS OF THE STABILIZATION OF HEN LYSOZYME WITH THE HELIX DIPOLE AND CHARGED SIDE CHAINS'''
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Analysis of the stabilization of hen lysozyme by helix macrodipole and charged side chain interaction.,Motoshima H, Mine S, Masumoto K, Abe Y, Iwashita H, Hashimoto Y, Chijiiwa Y, Ueda T, Imoto T J Biochem. 1997 Jun;121(6):1076-81. PMID:9354379<ref>PMID:9354379</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1kxw" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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In the N-terminal region of the alpha-helix of the c-type lysozymes, two Asx residues exist at the 18th and 27th positions. Hen lysozyme has Asp18/Asn27 (18D/27N), and we prepared three mutant lysozymes, Asn18/Asn27 (18N/27N), Asn18/Asp27 (18N/27D), and Asp18/Asp27 (18D/27D). The stability of the wild-type (18D/27N) lysozyme supported the existence of a hydrogen bond between the side chain of Asp18 and the amide group at the N1 position in the alpha-helix, while the stability of the 18N/27D lysozyme supported the presence of the capping box between the Ser24 (N-cap) and Asp27 residues. Although electrostatic repulsion was observed between Asp18 and Asp27 residues in 18D/27D lysozyme, the dissociation of each residue contributed to stabilizing the B-helix in 18D/27D lysozyme through hydrogen bonding and charge-helix macrodipole interaction. This is the first evidence that two neighboring negative charges at the N-terminus of the helix both increased the stability of the protein.
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*[[Lysozyme 3D structures|Lysozyme 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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1KXW is a [[Single protein]] structure of 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=1KXW OCA].
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__TOC__
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</StructureSection>
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==Reference==
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Analysis of the stabilization of hen lysozyme by helix macrodipole and charged side chain interaction., Motoshima H, Mine S, Masumoto K, Abe Y, Iwashita H, Hashimoto Y, Chijiiwa Y, Ueda T, Imoto T, J Biochem. 1997 Jun;121(6):1076-81. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9354379 9354379]
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[[Category: Gallus gallus]]
[[Category: Gallus gallus]]
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[[Category: Lysozyme]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Imoto T]]
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[[Category: Imoto, T.]]
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[[Category: Motoshima H]]
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[[Category: Motoshima, H.]]
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[[Category: Ohmura T]]
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[[Category: Ohmura, T.]]
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[[Category: Ueda T]]
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[[Category: Ueda, T.]]
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[[Category: electrostatic interaction]]
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[[Category: glycosidase]]
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[[Category: helix]]
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[[Category: hen lysozyme]]
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[[Category: hydrolase]]
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[[Category: stability]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:55:14 2008''
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Current revision

ANALYSIS OF THE STABILIZATION OF HEN LYSOZYME WITH THE HELIX DIPOLE AND CHARGED SIDE CHAINS

PDB ID 1kxw

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