View source for 2fp9


==Crystal structure of Native Strictosidine Synthase==
<StructureSection load='2fp9' size='340' side='right'caption='[[2fp9]], [[Resolution|resolution]] 2.96&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2fp9]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Ophioxylon_serpentinum Ophioxylon serpentinum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FP9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FP9 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=TLA:L(+)-TARTARIC+ACID'>TLA</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2fp8|2fp8]], [[2fpb|2fpb]], [[2fpc|2fpc]]</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Strictosidine_synthase Strictosidine synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.3.3.2 4.3.3.2] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2fp9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fp9 OCA], [http://pdbe.org/2fp9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fp9 RCSB], [http://www.ebi.ac.uk/pdbsum/2fp9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2fp9 ProSAT]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/STSY_RAUSE STSY_RAUSE]] Catalyzes the stereospecific condensation of tryptamine with secologanin to form strictosidine, the key intermediate of indole alkaloid biosynthesis. 
== 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/fp/2fp9_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=2fp9 ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
The enzyme strictosidine synthase (STR1) from the Indian medicinal plant Rauvolfia serpentina is of primary importance for the biosynthetic pathway of the indole alkaloid ajmaline. Moreover, STR1 initiates all biosynthetic pathways leading to the entire monoterpenoid indole alkaloid family representing an enormous structural variety of approximately 2000 compounds in higher plants. The crystal structures of STR1 in complex with its natural substrates tryptamine and secologanin provide structural understanding of the observed substrate preference and identify residues lining the active site surface that contact the substrates. STR1 catalyzes a Pictet-Spengler-type reaction and represents a novel six-bladed beta-propeller fold in plant proteins. Structure-based sequence alignment revealed a common repetitive sequence motif (three hydrophobic residues are followed by a small residue and a hydrophilic residue), indicating a possible evolutionary relationship between STR1 and several sequence-unrelated six-bladed beta-propeller structures. Structural analysis and site-directed mutagenesis experiments demonstrate the essential role of Glu-309 in catalysis. The data will aid in deciphering the details of the reaction mechanism of STR1 as well as other members of this enzyme family.

The structure of Rauvolfia serpentina strictosidine synthase is a novel six-bladed beta-propeller fold in plant proteins.,Ma X, Panjikar S, Koepke J, Loris E, Stockigt J Plant Cell. 2006 Apr;18(4):907-20. Epub 2006 Mar 10. PMID:16531499<ref>PMID:16531499</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 2fp9" style="background-color:#fffaf0;"></div>

==See Also==
*[[Strictosidine Synthase|Strictosidine Synthase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Ophioxylon serpentinum]]
[[Category: Strictosidine synthase]]
[[Category: Panjikar, S]]
[[Category: Lyase]]
[[Category: Six bladed beta propeller fold]]
[[Category: Str1]]
[[Category: Synthase]]