1twm: Difference between revisions
New page: left|200px<br /> <applet load="1twm" size="450" color="white" frame="true" align="right" spinBox="true" caption="1twm, resolution 2.26Å" /> '''Interleukin-1 Beta ... |
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[[Image:1twm.gif|left|200px]]<br /> | [[Image:1twm.gif|left|200px]]<br /><applet load="1twm" size="350" color="white" frame="true" align="right" spinBox="true" | ||
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'''Interleukin-1 Beta Mutant F146Y'''<br /> | '''Interleukin-1 Beta Mutant F146Y'''<br /> | ||
==Overview== | ==Overview== | ||
The structural and energetic consequences of modifications to the | The structural and energetic consequences of modifications to the hydrophobic cavity of interleukin 1-beta (IL-1beta) are described. Previous reports demonstrated that the entirely hydrophobic cavity of IL-1beta contains positionally disordered water. To gain a better understanding of the nature of this cavity and the water therein, a number of mutant proteins were constructed by site-directed mutagenesis, designed to result in altered hydrophobicity of the cavity. These mutations involve the replacement of specific phenylalanine residues, which circumscribe the cavity, with tyrosine, tryptophan, leucine and isoleucine. Using differential scanning calorimetry to determine the relative stabilities of the wild-type and mutant proteins, we found all of the mutants to be destabilizing. X-ray crystallography was used to identify the structural consequences of the mutations. No clear correlation between the hydrophobicities of the specific side-chains introduced and the resulting stabilities was found. | ||
==Disease== | ==Disease== | ||
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==About this Structure== | ==About this Structure== | ||
1TWM is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http:// | 1TWM is a [http://en.wikipedia.org/wiki/Single_protein 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=1TWM OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Adamek, D | [[Category: Adamek, D H.]] | ||
[[Category: Capsar, D | [[Category: Capsar, D L.]] | ||
[[Category: hydrophobic cavity]] | [[Category: hydrophobic cavity]] | ||
[[Category: hydrophobicity]] | [[Category: hydrophobicity]] | ||
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[[Category: water]] | [[Category: water]] | ||
''Page seeded by [http:// | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:18:07 2008'' | ||
Revision as of 16:18, 21 February 2008
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Interleukin-1 Beta Mutant F146Y
OverviewOverview
The structural and energetic consequences of modifications to the hydrophobic cavity of interleukin 1-beta (IL-1beta) are described. Previous reports demonstrated that the entirely hydrophobic cavity of IL-1beta contains positionally disordered water. To gain a better understanding of the nature of this cavity and the water therein, a number of mutant proteins were constructed by site-directed mutagenesis, designed to result in altered hydrophobicity of the cavity. These mutations involve the replacement of specific phenylalanine residues, which circumscribe the cavity, with tyrosine, tryptophan, leucine and isoleucine. Using differential scanning calorimetry to determine the relative stabilities of the wild-type and mutant proteins, we found all of the mutants to be destabilizing. X-ray crystallography was used to identify the structural consequences of the mutations. No clear correlation between the hydrophobicities of the specific side-chains introduced and the resulting stabilities was found.
DiseaseDisease
Known disease associated with this structure: Gastric cancer risk after H. pylori infection OMIM:[147720]
About this StructureAbout this Structure
1TWM is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
ReferenceReference
Structural and energetic consequences of mutations in a solvated hydrophobic cavity., Adamek DH, Guerrero L, Blaber M, Caspar DL, J Mol Biol. 2005 Feb 11;346(1):307-18. Epub 2004 Dec 24. PMID:15663946
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