2gdu: Difference between revisions
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[[Image: | ==E232Q mutant of sucrose phosphorylase from BIFIDOBACTERIUM ADOLESCENTIS in complex with sucrose== | ||
<StructureSection load='2gdu' size='340' side='right' caption='[[2gdu]], [[Resolution|resolution]] 2.10Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2gdu]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Bifidobacterium_adolescentis Bifidobacterium adolescentis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GDU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2GDU FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SUC:SUCROSE'>SUC</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CSW:CYSTEINE-S-DIOXIDE'>CSW</scene></td></tr> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1r7a|1r7a]], [[2gdv|2gdv]]</td></tr> | |||
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Sucrose_phosphorylase Sucrose phosphorylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.1.7 2.4.1.7] </span></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=2gdu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gdu OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2gdu RCSB], [http://www.ebi.ac.uk/pdbsum/2gdu 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/gd/2gdu_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 reaction mechanism of sucrose phosphorylase from Bifidobacterium adolescentis (BiSP) was studied by site-directed mutagenesis and x-ray crystallography. An inactive mutant of BiSP (E232Q) was co-crystallized with sucrose. The structure revealed a substrate-binding mode comparable with that seen in other related sucrose-acting enzymes. Wild-type BiSP was also crystallized in the presence of sucrose. In the dimeric structure, a covalent glucosyl intermediate was formed in one molecule of the BiSP dimer, and after hydrolysis of the glucosyl intermediate, a beta-D-glucose product complex was formed in the other molecule. Although the overall structure of the BiSP-glucosyl intermediate complex is similar to that of the BiSP(E232Q)-sucrose complex, the glucose complex discloses major differences in loop conformations. Two loops (residues 336-344 and 132-137) in the proximity of the active site move up to 16 and 4 A, respectively. On the basis of these findings, we have suggested a reaction cycle that takes into account the large movements in the active-site entrance loops. | |||
Structural rearrangements of sucrose phosphorylase from Bifidobacterium adolescentis during sucrose conversion.,Mirza O, Skov LK, Sprogoe D, van den Broek LA, Beldman G, Kastrup JS, Gajhede M J Biol Chem. 2006 Nov 17;281(46):35576-84. Epub 2006 Sep 21. PMID:16990265<ref>PMID:16990265</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
< | |||
[[Category: Bifidobacterium adolescentis]] | [[Category: Bifidobacterium adolescentis]] | ||
[[Category: Sucrose phosphorylase]] | [[Category: Sucrose phosphorylase]] | ||
Revision as of 08:36, 30 September 2014
E232Q mutant of sucrose phosphorylase from BIFIDOBACTERIUM ADOLESCENTIS in complex with sucrose
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