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==Asymmetric complex of human neuron specific enolase-6-PGA/PEP==
==Asymmetric complex of human neuron specific enolase-6-PGA/PEP==
<StructureSection load='3ujs' size='340' side='right' caption='[[3ujs]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
<StructureSection load='3ujs' size='340' side='right' caption='[[3ujs]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3ujs]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3UJS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3UJS FirstGlance]. <br>
<table><tr><td colspan='2'>[[3ujs]] is a 2 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=3UJS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3UJS FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=0V5:(2R)-2-(PHOSPHONOOXY)PROPANOIC+ACID'>0V5</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>, <scene name='pdbligand=XSP:(2R)-3-OXO-2-(PHOSPHONOOXY)PROPANOIC+ACID'>XSP</scene></td></tr>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=0V5:(2R)-2-(PHOSPHONOOXY)PROPANOIC+ACID'>0V5</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>, <scene name='pdbligand=XSP:(2R)-3-OXO-2-(PHOSPHONOOXY)PROPANOIC+ACID'>XSP</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3uje|3uje]], [[3ujf|3ujf]], [[3ujr|3ujr]]</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3uje|3uje]], [[3ujf|3ujf]], [[3ujr|3ujr]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ENO2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ENO2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phosphopyruvate_hydratase Phosphopyruvate hydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.11 4.2.1.11] </span></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phosphopyruvate_hydratase Phosphopyruvate hydratase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.1.11 4.2.1.11] </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=3ujs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ujs OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ujs RCSB], [http://www.ebi.ac.uk/pdbsum/3ujs PDBsum]</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=3ujs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ujs OCA], [http://pdbe.org/3ujs PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3ujs RCSB], [http://www.ebi.ac.uk/pdbsum/3ujs PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3ujs ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 3ujs" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Human]]
[[Category: Phosphopyruvate hydratase]]
[[Category: Phosphopyruvate hydratase]]
[[Category: Brewer, J]]
[[Category: Brewer, J]]

Revision as of 21:11, 4 August 2016

Asymmetric complex of human neuron specific enolase-6-PGA/PEPAsymmetric complex of human neuron specific enolase-6-PGA/PEP

Structural highlights

3ujs is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:, , ,
Gene:ENO2 (HUMAN)
Activity:Phosphopyruvate hydratase, with EC number 4.2.1.11
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ENOG_HUMAN] Has neurotrophic and neuroprotective properties on a broad spectrum of central nervous system (CNS) neurons. Binds, in a calcium-dependent manner, to cultured neocortical neurons and promotes cell survival (By similarity).

Publication Abstract from PubMed

In the presence of magnesium, enolase catalyzes the dehydration of 2-phospho-d-glycerate (PGA) to phosphoenolpyruvate (PEP) in glycolysis and the reverse reaction in gluconeogensis at comparable rates. The structure of human neuron specific enolase (hNSE) crystals soaked in PGA showed that the enzyme is active in the crystals and produced PEP; conversely soaking in PEP produced PGA. Moreover, the hNSE dimer contains PGA bound in one subunit and PEP or a mixture of PEP and PGA in the other. Crystals soaked in a mixture of competitive inhibitors tartronate semialdehyde phosphate (TSP) and lactic acid phosphate (LAP) showed asymmetry with TSP binding in the same site as PGA and LAP in the PEP site. Kinetic studies showed that the inhibition of NSE by mixtures of TSP and LAP is stronger than predicted for independently acting inhibitors. This indicates that in some cases inhibition of homodimeric enzymes by mixtures of inhibitors ("heteroinhibition") may offer advantages over single inhibitors.

Structures of asymmetric complexes of human neuron specific enolase with resolved substrate and product and an analogous complex with two inhibitors indicate subunit interaction and inhibitor cooperativity.,Qin J, Chai G, Brewer JM, Lovelace LL, Lebioda L J Inorg Biochem. 2012 Jun;111:187-94. Epub 2012 Feb 24. PMID:22437160[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Qin J, Chai G, Brewer JM, Lovelace LL, Lebioda L. Structures of asymmetric complexes of human neuron specific enolase with resolved substrate and product and an analogous complex with two inhibitors indicate subunit interaction and inhibitor cooperativity. J Inorg Biochem. 2012 Jun;111:187-94. Epub 2012 Feb 24. PMID:22437160 doi:10.1016/j.jinorgbio.2012.02.011

3ujs, resolution 1.65Å

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