1b2p: Difference between revisions

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[[Image:1b2p.png|left|200px]]
==NATIVE MANNOSE-SPECIFIC BULB LECTIN FROM SCILLA CAMPANULATA (BLUEBELL) AT 1.7 ANGSTROMS RESOLUTION==
<StructureSection load='1b2p' size='340' side='right' caption='[[1b2p]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1b2p]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Hyacinthoides_hispanica Hyacinthoides hispanica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B2P OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1B2P FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1b2p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b2p OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1b2p RCSB], [http://www.ebi.ac.uk/pdbsum/1b2p PDBsum]</span></td></tr>
<table>
== 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/b2/1b2p_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/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The X-ray crystal structure of native Scilla campanulata agglutinin, a mannose-specific lectin from bluebell bulbs and a member of the Liliaceae family, has been determined by molecular replacement and refined to an R value of 0.186 at 1.7 A resolution. The lectin crystallizes in space group P21212 with unit-cell parameters a = 70. 42, b = 92.95, c = 46.64 A. The unit cell contains eight protein molecules of Mr = 13143 Da (119 amino-acid residues). The asymmetric unit comprises two chemically identical molecules, A and B, related by a non-crystallographic twofold axis perpendicular to c. This dimer further associates by crystallographic twofold symmetry to form a tetramer. The fold of the polypeptide backbone closely resembles that found in the lectins from Galanthus nivalis (snowdrop) and Hippeastrum (amaryllis) and contains a threefold symmetric beta-prism made up of three antiparallel four-stranded beta-sheets. Each of the four-stranded beta-sheets (I, II and III) possesses a potential saccharide-binding site containing conserved residues; however, site II has two mutations relative to sites I and III which may prevent ligation at this site. Our study provides the first accurate and detailed description of a native (unligated) structure from this superfamily of mannose-specific bulb lectins and will allow comparisons with a number of lectin-saccharide complexes which have already been determined or are currently under investigation.


{{STRUCTURE_1b2p|  PDB=1b2p  |  SCENE=  }}
Structure of the native (unligated) mannose-specific bulb lectin from Scilla campanulata (bluebell) at 1.7 A resolution.,Wood SD, Wright LM, Reynolds CD, Rizkallah PJ, Allen AK, Peumans WJ, Van Damme EJ Acta Crystallogr D Biol Crystallogr. 1999 Jul;55(Pt 7):1264-72. PMID:10393293<ref>PMID:10393293</ref>


===NATIVE MANNOSE-SPECIFIC BULB LECTIN FROM SCILLA CAMPANULATA (BLUEBELL) AT 1.7 ANGSTROMS RESOLUTION===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_10393293}}
== References ==
 
<references/>
==About this Structure==
__TOC__
[[1b2p]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Hyacinthoides_hispanica Hyacinthoides hispanica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B2P OCA].
</StructureSection>
 
==Reference==
<ref group="xtra">PMID:010393293</ref><references group="xtra"/>
[[Category: Hyacinthoides hispanica]]
[[Category: Hyacinthoides hispanica]]
[[Category: Allen, A K.]]
[[Category: Allen, A K.]]