3eca

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[[Image:3eca.png|left|200px]]
 
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==CRYSTAL STRUCTURE OF ESCHERICHIA COLI L-ASPARAGINASE, AN ENZYME USED IN CANCER THERAPY (ELSPAR)==
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The line below this paragraph, containing "STRUCTURE_3eca", creates the "Structure Box" on the page.
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<StructureSection load='3eca' size='340' side='right'caption='[[3eca]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[3eca]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ECA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ECA FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ASP:ASPARTIC+ACID'>ASP</scene></td></tr>
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{{STRUCTURE_3eca| PDB=3eca | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3eca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3eca OCA], [https://pdbe.org/3eca PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3eca RCSB], [https://www.ebi.ac.uk/pdbsum/3eca PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3eca ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/ASPG2_ECOLI ASPG2_ECOLI]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ec/3eca_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=3eca ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The crystal structure of Escherichia coli asparaginase II (EC 3.5.1.1), a drug (Elspar) used for the treatment of acute lymphoblastic leukemia, has been determined at 2.3 A resolution by using data from a single heavy atom derivative in combination with molecular replacement. The atomic model was refined to an R factor of 0.143. This enzyme, active as a homotetramer with 222 symmetry, belongs to the class of alpha/beta proteins. Each subunit has two domains with unique topological features. On the basis of present structural evidence consistent with previous biochemical studies, we propose locations for the active sites between the N- and C-terminal domains belonging to different subunits and postulate a catalytic role for Thr-89.
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===CRYSTAL STRUCTURE OF ESCHERICHIA COLI L-ASPARAGINASE, AN ENZYME USED IN CANCER THERAPY===
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Crystal structure of Escherichia coli L-asparaginase, an enzyme used in cancer therapy.,Swain AL, Jaskolski M, Housset D, Rao JK, Wlodawer A Proc Natl Acad Sci U S A. 1993 Feb 15;90(4):1474-8. PMID:8434007<ref>PMID:8434007</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3eca" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_8434007}}, adds the Publication Abstract to the page
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*[[Asparaginase 3D structures|Asparaginase 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 8434007 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_8434007}}
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__TOC__
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</StructureSection>
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==About this Structure==
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3ECA is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ECA OCA].
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==Reference==
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Crystal structure of Escherichia coli L-asparaginase, an enzyme used in cancer therapy., Swain AL, Jaskolski M, Housset D, Rao JK, Wlodawer A, Proc Natl Acad Sci U S A. 1993 Feb 15;90(4):1474-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8434007 8434007]
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[[Category: Asparaginase]]
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[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Housset, D.]]
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[[Category: Housset D]]
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[[Category: Jaskolski, M.]]
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[[Category: Jaskolski M]]
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[[Category: Rao, J K.M.]]
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[[Category: Rao JKM]]
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[[Category: Swain, A L.]]
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[[Category: Swain AL]]
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[[Category: Wlodawer, A.]]
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[[Category: Wlodawer A]]
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[[Category: Hydrolase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 02:25:41 2008''
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Current revision

CRYSTAL STRUCTURE OF ESCHERICHIA COLI L-ASPARAGINASE, AN ENZYME USED IN CANCER THERAPY (ELSPAR)

PDB ID 3eca

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