View source for 1jen


==HUMAN S-ADENOSYLMETHIONINE DECARBOXYLASE==
<StructureSection load='1jen' size='340' side='right'caption='[[1jen]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1jen]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JEN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1JEN FirstGlance]. <br>
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PYR:PYRUVIC+ACID'>PYR</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Adenosylmethionine_decarboxylase Adenosylmethionine decarboxylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.1.50 4.1.1.50] </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=1jen FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jen OCA], [http://pdbe.org/1jen PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1jen RCSB], [http://www.ebi.ac.uk/pdbsum/1jen PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1jen ProSAT]</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/je/1jen_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=1jen ConSurf].
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== Publication Abstract from PubMed ==
BACKGROUND: S-Adenosylmethionine decarboxylase (AdoMetDC) is a critical regulatory enzyme of the polyamine synthetic pathway, and a well-studied drug target. The AdoMetDC decarboxylation reaction depends upon a pyruvoyl cofactor generated via an intramolecular proenzyme self-cleavage reaction. Both the proenzyme-processing and substrate-decarboxylation reactions are allosterically enhanced by putrescine. Structural elucidation of this enzyme is necessary to fully interpret the existing mutational and inhibitor-binding data, and to suggest further experimental studies. RESULTS: The structure of human AdoMetDC has been determined to 2.25 A resolution using multiwavelength anomalous diffraction (MAD) phasing methods based on 22 selenium-atom positions. The quaternary structure of the mature AdoMetDC is an (alpha beta)2 dimer, where alpha and beta represent the products of the proenzyme self-cleavage reaction. The architecture of each (alpha beta) monomer is a novel four-layer alpha/beta-sandwich fold, comprised of two antiparallel eight-stranded beta sheets flanked by several alpha and 3(10) helices. CONCLUSIONS: The structure and topology of AdoMetDC display internal symmetry, suggesting that this protein may be the product of an ancient gene duplication. The positions of conserved, functionally important residues suggest the location of the active site and a possible binding site for the effector molecule putrescine.

The crystal structure of human S-adenosylmethionine decarboxylase at 2.25 A resolution reveals a novel fold.,Ekstrom JL, Mathews II, Stanley BA, Pegg AE, Ealick SE Structure. 1999 May;7(5):583-95. PMID:10378277<ref>PMID:10378277</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 1jen" style="background-color:#fffaf0;"></div>

==See Also==
*[[SAM decarboxylase|SAM decarboxylase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Adenosylmethionine decarboxylase]]
[[Category: Human]]
[[Category: Large Structures]]
[[Category: Ealick, S E]]
[[Category: Ekstrom, J L]]
[[Category: Mathews, I I]]
[[Category: Pegg, A E]]
[[Category: Stanley, B A]]
[[Category: Allosteric enzyme]]
[[Category: Gene duplication]]
[[Category: Polyamine biosynthesis]]
[[Category: Pyruvoyl]]
[[Category: S-adenosylmethionine decarboxylase]]
[[Category: Sandwich]]