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New page: left|200px<br /><applet load="1sty" size="450" color="white" frame="true" align="right" spinBox="true" caption="1sty, resolution 1.67Å" /> '''THE ALPHA ANEURISM: ...
 
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[[Image:1sty.jpg|left|200px]]<br /><applet load="1sty" size="450" color="white" frame="true" align="right" spinBox="true"  
[[Image:1sty.jpg|left|200px]]<br /><applet load="1sty" size="350" color="white" frame="true" align="right" spinBox="true"  
caption="1sty, resolution 1.67&Aring;" />
caption="1sty, resolution 1.67&Aring;" />
'''THE ALPHA ANEURISM: A STRUCTURAL MOTIF REVEALED IN AN INSERTION MUTANT OF STAPHYLOCOCCAL NUCLEASE'''<br />
'''THE ALPHA ANEURISM: A STRUCTURAL MOTIF REVEALED IN AN INSERTION MUTANT OF STAPHYLOCOCCAL NUCLEASE'''<br />


==Overview==
==Overview==
The x-ray crystal structure of a mutant of staphylococcal nuclease that, contains a single glycine residue inserted in the C-terminal alpha-helix, has been solved to 1.67 A resolution and refined to a crystallographic R, value of 0.170. This inserted glycine residue is accommodated in the, alpha-helix by formation of a previously uncharacterized bulge, which we, term the alpha aneurism. A conformational search of known protein, structures has identified the alpha aneurism in a number of protein, families, including the histocompatibility antigens and hemoglobins.
The x-ray crystal structure of a mutant of staphylococcal nuclease that contains a single glycine residue inserted in the C-terminal alpha-helix has been solved to 1.67 A resolution and refined to a crystallographic R value of 0.170. This inserted glycine residue is accommodated in the alpha-helix by formation of a previously uncharacterized bulge, which we term the alpha aneurism. A conformational search of known protein structures has identified the alpha aneurism in a number of protein families, including the histocompatibility antigens and hemoglobins.


==About this Structure==
==About this Structure==
1STY is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus] with CA and THP as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Micrococcal_nuclease Micrococcal nuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.31.1 3.1.31.1] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1STY OCA].  
1STY is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus] with <scene name='pdbligand=CA:'>CA</scene> and <scene name='pdbligand=THP:'>THP</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Micrococcal_nuclease Micrococcal nuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.31.1 3.1.31.1] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1STY OCA].  


==Reference==
==Reference==
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[[Category: Single protein]]
[[Category: Single protein]]
[[Category: Staphylococcus aureus]]
[[Category: Staphylococcus aureus]]
[[Category: Keefe, L.J.]]
[[Category: Keefe, L J.]]
[[Category: Lattman, E.E.]]
[[Category: Lattman, E E.]]
[[Category: CA]]
[[Category: CA]]
[[Category: THP]]
[[Category: THP]]
[[Category: hydrolase (phosphoric diester)]]
[[Category: hydrolase (phosphoric diester)]]


''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 02:39:53 2007''
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:05:07 2008''