2r00

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{{Seed}}
 
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[[Image:2r00.png|left|200px]]
 
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==crystal structure of aspartate semialdehyde dehydrogenase II complexed with ASA from vibrio cholerae==
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The line below this paragraph, containing "STRUCTURE_2r00", creates the "Structure Box" on the page.
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<StructureSection load='2r00' size='340' side='right'caption='[[2r00]], [[Resolution|resolution]] 2.03&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'>[[2r00]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_cholerae Vibrio cholerae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2R00 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2R00 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]] 2.03&#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=HTI:(4S)-4-{[(2S)-2-AMINO-3-OXOPROPYL]SULFANYL}-L-HOMOSERINE'>HTI</scene>, <scene name='pdbligand=OEG:2,2-OXYDIACETIC+ACID'>OEG</scene></td></tr>
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{{STRUCTURE_2r00| PDB=2r00 | 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=2r00 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2r00 OCA], [https://pdbe.org/2r00 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2r00 RCSB], [https://www.ebi.ac.uk/pdbsum/2r00 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2r00 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/DHAS2_VIBCH DHAS2_VIBCH] Catalyzes the NADPH-dependent formation of L-aspartate-semialdehyde (L-ASA) by the reductive dephosphorylation of L-aspartyl-4-phosphate.<ref>PMID:12071715</ref>
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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/r0/2r00_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=2r00 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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Aspartate-beta-semialdehyde dehydrogenase (ASADH) is an essential enzyme that is found in bacteria, fungi and plants but not in humans. ASADH produces the first branch-point metabolite in the biosynthetic pathways that lead to the production of lysine, threonine, methionine and isoleucine as well as the cell-wall precursor diaminopimelate. As a consequence, ASADH appears to be an excellent target for the development of novel antibiotics, especially for Gram-negative bacteria that require diaminopimelate for cell-wall biosynthesis. In contrast to the Gram-negative ASADHs, which readily formed well diffracting crystals, the second isoform of aspartate-beta-semialdehyde dehydrogenase from Vibrio cholerae (vcASADH2) was less well behaved in initial crystallization trials. In order to obtain good-quality single crystals of vcASADH2, a buffer-optimization protocol was used in which the initial purification buffer was exchanged into a new condition derived from a pre-crystalline hit. The unliganded structure of vcASADH2 has been determined to 2.2 A resolution to provide additional insight into the structural and functional evolution of the ASADH enzyme family. The overall fold and domain organization of this new structure is similar to the Gram-negative, Gram-positive and archeal ASADH structures determined previously, despite having less than 50% sequence identity to any of these family members. The substrate-complex structure reveals that the binding of L-aspartate-beta-semialdehyde (ASA) to vcASADH2 is accommodated by structural changes in the amino-acid binding site and in the helical subdomain that is involved in the dimer interface. Structural alignments show that this second isoform from Gram-negative V. cholerae most closely resembles the ASADH from a Gram-positive organism and is likely to bind the coenzyme in a different conformation to that observed in the other V. cholerae isoform.
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===crystal structure of aspartate semialdehyde dehydrogenase II complexed with ASA from vibrio cholerae===
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The structure of a redundant enzyme: a second isoform of aspartate beta-semialdehyde dehydrogenase in Vibrio cholerae.,Viola RE, Liu X, Ohren JF, Faehnle CR Acta Crystallogr D Biol Crystallogr. 2008 Mar;64(Pt 3):321-30. Epub 2008, Feb 20. PMID:18323627<ref>PMID:18323627</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 2r00" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_18323627}}, adds the Publication Abstract to the page
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*[[Aspartate-semialdehyde dehydrogenase 3D structures|Aspartate-semialdehyde dehydrogenase 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 18323627 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_18323627}}
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__TOC__
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</StructureSection>
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==About this Structure==
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[[Category: Large Structures]]
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2R00 is a 3 chains structure of sequences from [http://en.wikipedia.org/wiki/Vibrio_cholerae Vibrio cholerae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2R00 OCA].
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==Reference==
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<ref group="xtra">PMID:18323627</ref><references group="xtra"/>
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[[Category: Aspartate-semialdehyde dehydrogenase]]
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[[Category: Vibrio cholerae]]
[[Category: Vibrio cholerae]]
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[[Category: Faehnle, C R.]]
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[[Category: Faehnle CR]]
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[[Category: Liu, X.]]
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[[Category: Liu X]]
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[[Category: Ohren, J F.]]
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[[Category: Ohren JF]]
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[[Category: Viola, R E.]]
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[[Category: Viola RE]]
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[[Category: Amino-acid biosynthesis]]
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[[Category: Aspartate semialdehyde dehydrogenase]]
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[[Category: Conformational change]]
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[[Category: Diaminopimelate biosynthesis]]
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[[Category: Half-of-sites-reactivity]]
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[[Category: Lysine biosynthesis]]
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[[Category: Nadp]]
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[[Category: Oxidoreductase]]
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[[Category: Protein evolution]]
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[[Category: Sequence homology]]
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[[Category: Subunit communication]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Feb 17 17:22:04 2009''
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Current revision

crystal structure of aspartate semialdehyde dehydrogenase II complexed with ASA from vibrio cholerae

PDB ID 2r00

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