3cpr: Difference between revisions
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[[Image: | ==The crystal structure of Corynebacterium glutamicum dihydrodipicolinate synthase to 2.2 A resolution== | ||
<StructureSection load='3cpr' size='340' side='right' caption='[[3cpr]], [[Resolution|resolution]] 2.20Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3cpr]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Corynebacterium_glutamicum Corynebacterium glutamicum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CPR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3CPR FirstGlance]. <br> | |||
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MCL:NZ-(1-CARBOXYETHYL)-LYSINE'>MCL</scene></td></tr> | |||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dapA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1718 Corynebacterium glutamicum])</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Dihydrodipicolinate_synthase Dihydrodipicolinate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.52 4.2.1.52] </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=3cpr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cpr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3cpr RCSB], [http://www.ebi.ac.uk/pdbsum/3cpr PDBsum]</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/cp/3cpr_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/chain_selection.php?pdb_ID=2ata ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The lysine insensitive Corynebacterium glutamicum dihydrodipicolinate synthase enzyme (cDHDPS) was recently successfully introduced into maize plants to enhance the level of lysine in the grain. To better understand lysine insensitivity of the cDHDPS, we expressed, purified, kinetically characterized the protein, and solved its X-ray crystal structure. The cDHDPS enzyme has a fold and overall structure that is highly similar to other DHDPS proteins. A noteworthy feature of the active site is the evidence that the catalytic lysine residue forms a Schiff base adduct with pyruvate. Analyses of the cDHDPS structure in the vicinity of the putative binding site for S-lysine revealed that the allosteric binding site in the Escherichia coli DHDPS protein does not exist in cDHDPS due to three non-conservative amino acids substitutions, and this is likely why cDHDPS is not feedback inhibited by lysine. | |||
Characterization and crystal structure of lysine insensitive Corynebacterium glutamicum dihydrodipicolinate synthase (cDHDPS) protein.,Rice EA, Bannon GA, Glenn KC, Jeong SS, Sturman EJ, Rydel TJ Arch Biochem Biophys. 2008 Dec 15;480(2):111-21. Epub 2008 Oct 7. PMID:18930704<ref>PMID:18930704</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Dihydrodipicolinate | *[[Dihydrodipicolinate synthase|Dihydrodipicolinate synthase]] | ||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Corynebacterium glutamicum]] | [[Category: Corynebacterium glutamicum]] | ||
[[Category: Dihydrodipicolinate synthase]] | [[Category: Dihydrodipicolinate synthase]] | ||
[[Category: Rice, E A | [[Category: Rice, E A]] | ||
[[Category: Rydel, T J | [[Category: Rydel, T J]] | ||
[[Category: Sturman, E J | [[Category: Sturman, E J]] | ||
[[Category: Amino-acid biosynthesis]] | [[Category: Amino-acid biosynthesis]] | ||
[[Category: Diaminopimelate biosynthesis]] | [[Category: Diaminopimelate biosynthesis]] | ||
Revision as of 15:43, 5 January 2015
The crystal structure of Corynebacterium glutamicum dihydrodipicolinate synthase to 2.2 A resolutionThe crystal structure of Corynebacterium glutamicum dihydrodipicolinate synthase to 2.2 A resolution
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe lysine insensitive Corynebacterium glutamicum dihydrodipicolinate synthase enzyme (cDHDPS) was recently successfully introduced into maize plants to enhance the level of lysine in the grain. To better understand lysine insensitivity of the cDHDPS, we expressed, purified, kinetically characterized the protein, and solved its X-ray crystal structure. The cDHDPS enzyme has a fold and overall structure that is highly similar to other DHDPS proteins. A noteworthy feature of the active site is the evidence that the catalytic lysine residue forms a Schiff base adduct with pyruvate. Analyses of the cDHDPS structure in the vicinity of the putative binding site for S-lysine revealed that the allosteric binding site in the Escherichia coli DHDPS protein does not exist in cDHDPS due to three non-conservative amino acids substitutions, and this is likely why cDHDPS is not feedback inhibited by lysine. Characterization and crystal structure of lysine insensitive Corynebacterium glutamicum dihydrodipicolinate synthase (cDHDPS) protein.,Rice EA, Bannon GA, Glenn KC, Jeong SS, Sturman EJ, Rydel TJ Arch Biochem Biophys. 2008 Dec 15;480(2):111-21. Epub 2008 Oct 7. PMID:18930704[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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