2meb: Difference between revisions

From Proteopedia
Jump to navigation Jump to search
← Older edit
No edit summary
No edit summary
 
(12 intermediate revisions by the same user not shown)
Line 1: Line 1:
{{Seed}}
[[Image:2meb.png|left|200px]]


<!--
==CHANGES IN CONFORMATIONAL STABILITY OF A SERIES OF MUTANT HUMAN LYSOZYMES AT CONSTANT POSITIONS==
The line below this paragraph, containing "STRUCTURE_2meb", creates the "Structure Box" on the page.
<StructureSection load='2meb' size='340' side='right'caption='[[2meb]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[2meb]] 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=2MEB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2MEB FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
-->
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
{{STRUCTURE_2meb|  PDB=2meb  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2meb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2meb OCA], [https://pdbe.org/2meb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2meb RCSB], [https://www.ebi.ac.uk/pdbsum/2meb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2meb 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>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/me/2meb_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=2meb ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
To elucidate correlative relationships between structural change and thermodynamic stability in proteins, a series of mutant human lysozymes modified at two buried positions (Ile56 and Ile59) were examined. Their thermodynamic parameters of denaturation and crystal structures were studied by calorimetry and X-ray crystallography. The mutants at positions 56 and 59 exhibited different responses to a series of amino acid substitutions. The changes in stability due to substitutions showed a linear correlation with changes in hydrophobicity of substituted residues, having different slopes at each mutation site. However, the stability of each mutant was found to be represented by a unique equation involving physical properties calculated from mutant structures. By fitting present and previous stability data for mutant human lysozymes substituted at various positions to the equation, the magnitudes of the hydrophobicity of a carbon atom and the hydrophobicity of nitrogen and neutral oxygen atoms were found to be 0.178 and -0.013 kJ/mol.A(2), respectively. It was also found that the contribution of a hydrogen bond with a length of 3.0 A to protein stability was 5.1 kJ/mol and the entropy loss of newly introduction of a water molecules was 7.8 kJ/mol.


===CHANGES IN CONFORMATIONAL STABILITY OF A SERIES OF MUTANT HUMAN LYSOZYMES AT CONSTANT POSITIONS===
Contribution of amino acid substitutions at two different interior positions to the conformational stability of human lysozyme.,Funahashi J, Takano K, Yamagata Y, Yutani K Protein Eng. 1999 Oct;12(10):841-50. PMID:10556244<ref>PMID:10556244</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2meb" style="background-color:#fffaf0;"></div>


<!--
==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_10556244}}, adds the Publication Abstract to the page
*[[Lysozyme 3D structures|Lysozyme 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 10556244 is the PubMed ID number.
== References ==
-->
<references/>
{{ABSTRACT_PUBMED_10556244}}
__TOC__
 
</StructureSection>
==About this Structure==
2MEB 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=2MEB OCA].
 
==Reference==
Contribution of amino acid substitutions at two different interior positions to the conformational stability of human lysozyme., Funahashi J, Takano K, Yamagata Y, Yutani K, Protein Eng. 1999 Oct;12(10):841-50. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10556244 10556244]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Lysozyme]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Funahashi J]]
[[Category: Funahashi, J.]]
[[Category: Takano K]]
[[Category: Takano, K.]]
[[Category: Yamagata Y]]
[[Category: Yamagata, Y.]]
[[Category: Yutani K]]
[[Category: Yutani, K.]]
[[Category: Alpha + beta]]
[[Category: Enzyme]]
[[Category: Glycosidase]]
[[Category: Hydrolase]]
[[Category: O-glycosyl]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 06:54:11 2008''

Latest revision as of 11:19, 30 October 2024

CHANGES IN CONFORMATIONAL STABILITY OF A SERIES OF MUTANT HUMAN LYSOZYMES AT CONSTANT POSITIONSCHANGES IN CONFORMATIONAL STABILITY OF A SERIES OF MUTANT HUMAN LYSOZYMES AT CONSTANT POSITIONS

Structural highlights

2meb is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.8Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

LYSC_HUMAN Defects in LYZ are a cause of amyloidosis type 8 (AMYL8) [MIM: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.[1]

Function

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

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

To elucidate correlative relationships between structural change and thermodynamic stability in proteins, a series of mutant human lysozymes modified at two buried positions (Ile56 and Ile59) were examined. Their thermodynamic parameters of denaturation and crystal structures were studied by calorimetry and X-ray crystallography. The mutants at positions 56 and 59 exhibited different responses to a series of amino acid substitutions. The changes in stability due to substitutions showed a linear correlation with changes in hydrophobicity of substituted residues, having different slopes at each mutation site. However, the stability of each mutant was found to be represented by a unique equation involving physical properties calculated from mutant structures. By fitting present and previous stability data for mutant human lysozymes substituted at various positions to the equation, the magnitudes of the hydrophobicity of a carbon atom and the hydrophobicity of nitrogen and neutral oxygen atoms were found to be 0.178 and -0.013 kJ/mol.A(2), respectively. It was also found that the contribution of a hydrogen bond with a length of 3.0 A to protein stability was 5.1 kJ/mol and the entropy loss of newly introduction of a water molecules was 7.8 kJ/mol.

Contribution of amino acid substitutions at two different interior positions to the conformational stability of human lysozyme.,Funahashi J, Takano K, Yamagata Y, Yutani K Protein Eng. 1999 Oct;12(10):841-50. PMID:10556244[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Pepys MB, Hawkins PN, Booth DR, Vigushin DM, Tennent GA, Soutar AK, Totty N, Nguyen O, Blake CC, Terry CJ, et al.. Human lysozyme gene mutations cause hereditary systemic amyloidosis. Nature. 1993 Apr 8;362(6420):553-7. PMID:8464497 doi:http://dx.doi.org/10.1038/362553a0
  2. ↑ Funahashi J, Takano K, Yamagata Y, Yutani K. Contribution of amino acid substitutions at two different interior positions to the conformational stability of human lysozyme. Protein Eng. 1999 Oct;12(10):841-50. PMID:10556244

2meb, resolution 1.80Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA
Retrieved from "https://proteopedia.openfox.io/wiki/index.php?title=2meb&oldid=4196777"