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New page: left|200px<br /><applet load="1p4p" size="450" color="white" frame="true" align="right" spinBox="true" caption="1p4p, resolution 2.00Å" /> '''Outer Surface Protei...
 
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[[Image:1p4p.gif|left|200px]]<br /><applet load="1p4p" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1p4p, resolution 2.00&Aring;" />
'''Outer Surface Protein B of B. burgdorferi: crystal structure of the C-terminal fragment'''<br />


==Overview==
==Outer Surface Protein B of B. burgdorferi: crystal structure of the C-terminal fragment==
Certain antibody Fab fragments directed against the C terminus of outer, surface protein B (OspB), a major lipoprotein of the Lyme disease, spirochete, Borrelia burgdorferi, have the unusual property of being, bactericidal even in the absence of complement. We report here x-ray, crystal structures of a C-terminal fragment of B. burgdorferi OspB, which, spans residues 152-296, alone at 2.0-A resolution, and in a complex with, the bactericidal Fab H6831 at 2.6-A resolution. The H6831 epitope is, topologically analogous to the LA-2 epitope of OspA and is centered around, OspB Lys-253, a residue essential for H6831 recognition. A beta-sheet, present in the free OspB fragment is either disordered or removed by, proteolysis in the H6831-bound complex. Other conformational changes, between free and H6831-bound structures are minor and appear to be related, to this loss. In both crystal structures, OspB C-terminal fragments form, artificial dimers connected by intermolecular beta-sheets. OspB structure, stability, and possible mechanisms of killing by H6831 and other, bactericidal Fabs are discussed in light of the structural data.
<StructureSection load='1p4p' size='340' side='right'caption='[[1p4p]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1p4p]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Borreliella_burgdorferi Borreliella burgdorferi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1P4P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1P4P FirstGlance]. <br>
</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&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1p4p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1p4p OCA], [https://pdbe.org/1p4p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1p4p RCSB], [https://www.ebi.ac.uk/pdbsum/1p4p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1p4p ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/OSPB_BORBU OSPB_BORBU]
== 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/p4/1p4p_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1p4p ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Certain antibody Fab fragments directed against the C terminus of outer surface protein B (OspB), a major lipoprotein of the Lyme disease spirochete, Borrelia burgdorferi, have the unusual property of being bactericidal even in the absence of complement. We report here x-ray crystal structures of a C-terminal fragment of B. burgdorferi OspB, which spans residues 152-296, alone at 2.0-A resolution, and in a complex with the bactericidal Fab H6831 at 2.6-A resolution. The H6831 epitope is topologically analogous to the LA-2 epitope of OspA and is centered around OspB Lys-253, a residue essential for H6831 recognition. A beta-sheet present in the free OspB fragment is either disordered or removed by proteolysis in the H6831-bound complex. Other conformational changes between free and H6831-bound structures are minor and appear to be related to this loss. In both crystal structures, OspB C-terminal fragments form artificial dimers connected by intermolecular beta-sheets. OspB structure, stability, and possible mechanisms of killing by H6831 and other bactericidal Fabs are discussed in light of the structural data.


==About this Structure==
Structural investigation of Borrelia burgdorferi OspB, a bactericidal Fab target.,Becker M, Bunikis J, Lade BD, Dunn JJ, Barbour AG, Lawson CL J Biol Chem. 2005 Apr 29;280(17):17363-70. Epub 2005 Feb 15. PMID:15713683<ref>PMID:15713683</ref>
1P4P is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Borrelia_burgdorferi Borrelia burgdorferi]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1P4P OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
Structural investigation of Borrelia burgdorferi OspB, a bactericidal Fab target., Becker M, Bunikis J, Lade BD, Dunn JJ, Barbour AG, Lawson CL, J Biol Chem. 2005 Apr 29;280(17):17363-70. Epub 2005 Feb 15. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15713683 15713683]
</div>
[[Category: Borrelia burgdorferi]]
<div class="pdbe-citations 1p4p" style="background-color:#fffaf0;"></div>
[[Category: Single protein]]
[[Category: Barbour, A.G.]]
[[Category: Becker, M.]]
[[Category: Bunikis, J.]]
[[Category: Dunn, J.J.]]
[[Category: Lade, B.D.]]
[[Category: Lawson, C.L.]]
[[Category: extended beta sheet]]
[[Category: intermolecular beta sheet]]


''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 23:28:26 2007''
==See Also==
*[[Outer surface protein|Outer surface protein]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Borreliella burgdorferi]]
[[Category: Large Structures]]
[[Category: Barbour AG]]
[[Category: Becker M]]
[[Category: Bunikis J]]
[[Category: Dunn JJ]]
[[Category: Lade BD]]
[[Category: Lawson CL]]
Retrieved from "https://proteopedia.org/1p4p"