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| | <StructureSection load='4qoy' size='340' side='right'caption='[[4qoy]], [[Resolution|resolution]] 2.80Å' scene=''> | | <StructureSection load='4qoy' size='340' side='right'caption='[[4qoy]], [[Resolution|resolution]] 2.80Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4qoy]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Eco57 Eco57] and [http://en.wikipedia.org/wiki/Eco5t Eco5t]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4QOY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4QOY FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4qoy]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_O157:H7 Escherichia coli O157:H7] and [https://en.wikipedia.org/wiki/Escherichia_coli_O157:H7_str._TW14359 Escherichia coli O157:H7 str. TW14359]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4QOY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4QOY FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2iea|2iea]]</td></tr> | + | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4qoy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4qoy OCA], [https://pdbe.org/4qoy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4qoy RCSB], [https://www.ebi.ac.uk/pdbsum/4qoy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4qoy ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">aceE, B0114, ECS0118, ECSP_0115, Z0124 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=544404 ECO5T]), aceF, ECs0119, Z0125 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83334 ECO57])</td></tr>
| + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Pyruvate_dehydrogenase_(acetyl-transferring) Pyruvate dehydrogenase (acetyl-transferring)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.2.4.1 1.2.4.1] </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=4qoy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4qoy OCA], [http://pdbe.org/4qoy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4qoy RCSB], [http://www.ebi.ac.uk/pdbsum/4qoy PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4qoy ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/C6UVU8_ECO5T C6UVU8_ECO5T]] Component of the pyruvate dehydrogenase (PDH) complex, that catalyzes the overall conversion of pyruvate to acetyl-CoA and CO(2) (By similarity).[PIRNR:PIRNR000156] | + | [https://www.uniprot.org/uniprot/Q8X966_ECO57 Q8X966_ECO57] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | ==See Also== | | ==See Also== |
| - | *[[Pyruvate dehydrogenase|Pyruvate dehydrogenase]] | + | *[[Pyruvate dehydrogenase 3D structures|Pyruvate dehydrogenase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Eco57]] | + | [[Category: Escherichia coli O157:H7]] |
| - | [[Category: Eco5t]] | + | [[Category: Escherichia coli O157:H7 str. TW14359]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Arjunan, P]] | + | [[Category: Arjunan P]] |
| - | [[Category: Furey, W]] | + | [[Category: Furey W]] |
| - | [[Category: Oxidoreductase]]
| + | |
| - | [[Category: Psbd]]
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| - | [[Category: Pyruvate dehydrogenase]]
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| Structural highlights
Function
Q8X966_ECO57
Publication Abstract from PubMed
The Escherichia coli pyruvate dehydrogenase multienzyme complex contains multiple copies of three enzymatic components, E1p, E2p and E3, that sequentially carry out distinct steps in the overall reaction converting pyruvate to acetyl-CoA. Efficient functioning requires the enzymatic components to assemble into a large complex, the integrity of which is maintained by tethering of the displaced, peripheral, E1p and E3 components to the E2p core through non-covalent binding. We here report the crystal structure of a sub-complex between E1p and an E2p didomain containing a hybrid lipoyl domain (LDh) along with the peripheral subunit binding domain (PSBD) responsible for tethering to the core. In the structure a region at the N-terminus of each subunit in the E1p homodimer previously unseen due to crystallographic disorder was observed, revealing a new folding motif involved in E1p-E2p didomain interactions, and an additional, unexpected, flexibility was discovered in the E1p-E2p didomain sub-complex; both of which likely have consequences in the overall multienzyme complex assembly. This represents the first structure of an E1p-E2p didomain sub-complex involving a homodimeric E1p, and the results may be applicable to a large range of complexes with homodimeric E1 components. Results of HD exchange mass spectrometric experiments using the intact, wild-type 3-lipoyl E2p and E1p are consistent with the crystallographic data obtained from the E1p-E2p didomain sub-complex, as well as with other biochemical and NMR data reported from our groups, confirming that our findings are applicable to the entire E1p-E2p assembly.
Novel Binding Motif and New Flexibility Revealed by Structural Analyses of a Pyruvate Dehydrogenase-Dihydrolipoyl Acetyltransferase Sub-complex from the Escherichia coli Pyruvate Dehydrogenase Multienzyme Complex.,Arjunan P, Wang J, Nemeria NS, Reynolds S, Brown I, Chandrasekhar K, Calero G, Jordan F, Furey W J Biol Chem. 2014 Sep 10. pii: jbc.M114.592915. PMID:25210042[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Arjunan P, Wang J, Nemeria NS, Reynolds S, Brown I, Chandrasekhar K, Calero G, Jordan F, Furey W. Novel Binding Motif and New Flexibility Revealed by Structural Analyses of a Pyruvate Dehydrogenase-Dihydrolipoyl Acetyltransferase Sub-complex from the Escherichia coli Pyruvate Dehydrogenase Multienzyme Complex. J Biol Chem. 2014 Sep 10. pii: jbc.M114.592915. PMID:25210042 doi:http://dx.doi.org/10.1074/jbc.M114.592915
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