1sn9

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[[Image:1sn9.gif|left|200px]]
 
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==An Oligomeric Domain-Swapped Beta-Beta-Alpha Mini-Protein==
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The line below this paragraph, containing "STRUCTURE_1sn9", creates the "Structure Box" on the page.
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<StructureSection load='1sn9' size='340' side='right'caption='[[1sn9]], [[Resolution|resolution]] 1.20&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1sn9]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SN9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1SN9 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]] 1.2&#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=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=DAL:D-ALANINE'>DAL</scene>, <scene name='pdbligand=DBZ:3-(BENZOYLAMINO)-L-ALANINE'>DBZ</scene>, <scene name='pdbligand=DPR:D-PROLINE'>DPR</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene></td></tr>
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{{STRUCTURE_1sn9| PDB=1sn9 | SCENE= }}
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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=1sn9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1sn9 OCA], [https://pdbe.org/1sn9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1sn9 RCSB], [https://www.ebi.ac.uk/pdbsum/1sn9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1sn9 ProSAT]</span></td></tr>
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</table>
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'''An Oligomeric Domain-Swapped Beta-Beta-Alpha Mini-Protein'''
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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==Overview==
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The x-ray crystal structure of an oligomeric miniprotein has been determined to a 1.2-A resolution by means of multiwavelength anomalous diffraction phasing with selenomethionine analogs that retain the biophysical characteristics of the native peptide. Peptide 1, comprising alpha and beta secondary structure elements with only 21 aa per monomer, associates as a discrete tetramer. The peptide adopts a previously uncharacterized quaternary structure in which alpha and beta components interact to form a tightly packed and well defined hydrophobic core. The structure provides insight into the origins of the unusual thermal stability of the oligomer. The miniprotein shares many characteristics of larger proteins, including cooperative folding, lack of 1-anilino-8-naphthalene sulfonate binding, and limited deuterium exchange, and possesses a buried surface area typical of native proteins.
The x-ray crystal structure of an oligomeric miniprotein has been determined to a 1.2-A resolution by means of multiwavelength anomalous diffraction phasing with selenomethionine analogs that retain the biophysical characteristics of the native peptide. Peptide 1, comprising alpha and beta secondary structure elements with only 21 aa per monomer, associates as a discrete tetramer. The peptide adopts a previously uncharacterized quaternary structure in which alpha and beta components interact to form a tightly packed and well defined hydrophobic core. The structure provides insight into the origins of the unusual thermal stability of the oligomer. The miniprotein shares many characteristics of larger proteins, including cooperative folding, lack of 1-anilino-8-naphthalene sulfonate binding, and limited deuterium exchange, and possesses a buried surface area typical of native proteins.
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==About this Structure==
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X-ray structure analysis of a designed oligomeric miniprotein reveals a discrete quaternary architecture.,Ali MH, Peisach E, Allen KN, Imperiali B Proc Natl Acad Sci U S A. 2004 Aug 17;101(33):12183-8. Epub 2004 Aug 9. PMID:15302930<ref>PMID:15302930</ref>
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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SN9 OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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X-ray structure analysis of a designed oligomeric miniprotein reveals a discrete quaternary architecture., Ali MH, Peisach E, Allen KN, Imperiali B, Proc Natl Acad Sci U S A. 2004 Aug 17;101(33):12183-8. Epub 2004 Aug 9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15302930 15302930]
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</div>
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[[Category: Ali, M H.]]
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<div class="pdbe-citations 1sn9" style="background-color:#fffaf0;"></div>
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[[Category: Allen, K N.]]
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== References ==
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[[Category: Imperiali, B.]]
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<references/>
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[[Category: Peisach, E.]]
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__TOC__
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[[Category: Domain swapping]]
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</StructureSection>
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[[Category: Mini-protein]]
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[[Category: Large Structures]]
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[[Category: Oligomerization]]
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[[Category: Ali MH]]
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[[Category: Protein design]]
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[[Category: Allen KN]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 08:54:59 2008''
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[[Category: Imperiali B]]
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[[Category: Peisach E]]

Current revision

An Oligomeric Domain-Swapped Beta-Beta-Alpha Mini-Protein

PDB ID 1sn9

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