1b5w: Difference between revisions

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[[Image:1b5w.png|left|200px]]


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==CONTRIBUTION OF HYDROGEN BONDS TO THE CONFORMATIONAL STABILITY OF HUMAN LYSOZYME: CALORIMETRY AND X-RAY ANALYSIS OF SIX SER->ALA MUTANTS==
The line below this paragraph, containing "STRUCTURE_1b5w", creates the "Structure Box" on the page.
<StructureSection load='1b5w' size='340' side='right'caption='[[1b5w]], [[Resolution|resolution]] 2.17&Aring;' scene=''>
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== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1b5w]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B5W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1B5W FirstGlance]. <br>
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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]] 2.17&#8491;</td></tr>
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<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>
{{STRUCTURE_1b5w|  PDB=1b5w  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1b5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b5w OCA], [https://pdbe.org/1b5w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1b5w RCSB], [https://www.ebi.ac.uk/pdbsum/1b5w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1b5w ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/LYSC_HUMAN LYSC_HUMAN] Defects in LYZ are a cause of amyloidosis type 8 (AMYL8) [MIM:[https://omim.org/entry/105200 105200]; also known as systemic non-neuropathic amyloidosis or Ostertag-type amyloidosis. AMYL8 is a hereditary generalized amyloidosis due to deposition of apolipoprotein A1, fibrinogen and lysozyme amyloids. Viscera are particularly affected. There is no involvement of the nervous system. Clinical features include renal amyloidosis resulting in nephrotic syndrome, arterial hypertension, hepatosplenomegaly, cholestasis, petechial skin rash.<ref>PMID:8464497</ref>
== Function ==
[https://www.uniprot.org/uniprot/LYSC_HUMAN LYSC_HUMAN] 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.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
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    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/b5/1b5w_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=1b5w ConSurf].
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== Publication Abstract from PubMed ==
To further examine the contribution of hydrogen bonds to the conformational stability of the human lysozyme, six Ser to Ala mutants were constructed. The thermodynamic parameters for denaturation of these six Ser mutant proteins were investigated by differential scanning calorimetry (DSC), and the crystal structures were determined by X-ray analysis. The denaturation Gibbs energy (DeltaG) of the Ser mutant proteins was changed from 2.0 to -5.7 kJ/mol, compared to that of the wild-type protein. With an analysis in which some factors that affected the stability due to mutation were considered, the contribution of hydrogen bonds to the stability (Delta DeltaGHB) was extracted on the basis of the structures of the mutant proteins. The results showed that hydrogen bonds between protein atoms and between a protein atom and a water bound with the protein molecule favorably contribute to the protein stability. The net contribution of one intramolecular hydrogen bond to protein stability (DeltaGHB) was 8.9 +/- 2.6 kJ/mol on average. However, the contribution to the protein stability of hydrogen bonds between a protein atom and a bound water molecule was smaller than that for a bond between protein atoms.


===CONTRIBUTION OF HYDROGEN BONDS TO THE CONFORMATIONAL STABILITY OF HUMAN LYSOZYME: CALORIMETRY AND X-RAY ANALYSIS OF SIX SER->ALA MUTANTS===
Contribution of hydrogen bonds to the conformational stability of human lysozyme: calorimetry and X-ray analysis of six Ser --&gt; Ala mutants.,Takano K, Yamagata Y, Kubota M, Funahashi J, Fujii S, Yutani K Biochemistry. 1999 May 18;38(20):6623-9. PMID:10350481<ref>PMID:10350481</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1b5w" style="background-color:#fffaf0;"></div>


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==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_10350481}}, adds the Publication Abstract to the page
*[[Lysozyme 3D structures|Lysozyme 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 10350481 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_10350481}}
__TOC__
 
</StructureSection>
==About this Structure==
1B5W is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B5W OCA].
 
==Reference==
Contribution of hydrogen bonds to the conformational stability of human lysozyme: calorimetry and X-ray analysis of six Ser --&gt; Ala mutants., Takano K, Yamagata Y, Kubota M, Funahashi J, Fujii S, Yutani K, Biochemistry. 1999 May 18;38(20):6623-9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10350481 10350481]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Lysozyme]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Fujii S]]
[[Category: Fujii, S.]]
[[Category: Funahashi J]]
[[Category: Funahashi, J.]]
[[Category: Kubota M]]
[[Category: Kubota, M.]]
[[Category: Takano K]]
[[Category: Takano, K.]]
[[Category: Yamagata Y]]
[[Category: Yamagata, Y.]]
[[Category: Yutani K]]
[[Category: Yutani, K.]]
[[Category: Hydrogen bond]]
[[Category: Stability]]
 
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