View source for 2jf6


==Structure of inactive mutant of Strictosidine Glucosidase in complex with strictosidine==
<StructureSection load='2jf6' size='340' side='right'caption='[[2jf6]], [[Resolution|resolution]] 2.82&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2jf6]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Rauvolfia_serpentina Rauvolfia serpentina]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JF6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JF6 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]] 2.82&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=S55:METHYL+(2S,3R,4S)-3-ETHYL-2-(BETA-D-GLUCOPYRANOSYLOXY)-4-[(1S)-2,3,4,9-TETRAHYDRO-1H-BETA-CARBOLIN-1-YLMETHYL]-3,4-DIHYDRO-2H-PYRAN-5-CARBOXYLATE'>S55</scene></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=2jf6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jf6 OCA], [https://pdbe.org/2jf6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jf6 RCSB], [https://www.ebi.ac.uk/pdbsum/2jf6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jf6 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SG1_RAUSE SG1_RAUSE] Glucosidase specifically involved in alkaloid biosynthesis leading to the accumulation of several alkaloids, including ajmaline, an important plant-derived pharmaceutical used in the therapy of heart disorders.<ref>PMID:22004291</ref> 
== 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/jf/2jf6_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=2jf6 ConSurf].
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== Publication Abstract from PubMed ==
Strictosidine beta-D-glucosidase (SG) follows strictosidine synthase (STR1) in the production of the reactive intermediate required for the formation of the large family of monoterpenoid indole alkaloids in plants. This family is composed of approximately 2000 structurally diverse compounds. SG plays an important role in the plant cell by activating the glucoside strictosidine and allowing it to enter the multiple indole alkaloid pathways. Here, we report detailed three-dimensional information describing both native SG and the complex of its inactive mutant Glu207Gln with the substrate strictosidine, thus providing a structural characterization of substrate binding and identifying the amino acids that occupy the active site surface of the enzyme. Structural analysis and site-directed mutagenesis experiments demonstrate the essential role of Glu-207, Glu-416, His-161, and Trp-388 in catalysis. Comparison of the catalytic pocket of SG with that of other plant glucosidases demonstrates the structural importance of Trp-388. Compared with all other glucosidases of plant, bacterial, and archaeal origin, SG's residue Trp-388 is present in a unique structural conformation that is specific to the SG enzyme. In addition to STR1 and vinorine synthase, SG represents the third structural example of enzymes participating in the biosynthetic pathway of the Rauvolfia alkaloid ajmaline. The data presented here will contribute to deciphering the structure and reaction mechanism of other higher plant glucosidases.

Molecular architecture of strictosidine glucosidase: the gateway to the biosynthesis of the monoterpenoid indole alkaloid family.,Barleben L, Panjikar S, Ruppert M, Koepke J, Stockigt J Plant Cell. 2007 Sep;19(9):2886-97. Epub 2007 Sep 21. PMID:17890378<ref>PMID:17890378</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2jf6" style="background-color:#fffaf0;"></div>

==See Also==
*[[Beta-glucosidase 3D structures|Beta-glucosidase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Rauvolfia serpentina]]
[[Category: Barleben L]]
[[Category: Koepke J]]
[[Category: Panjikar S]]
[[Category: Ruppert M]]
[[Category: Stockigt J]]