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| | <StructureSection load='5h7x' size='340' side='right'caption='[[5h7x]], [[Resolution|resolution]] 1.76Å' scene=''> | | <StructureSection load='5h7x' size='340' side='right'caption='[[5h7x]], [[Resolution|resolution]] 1.76Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5h7x]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Aciba Aciba]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5H7X OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5H7X FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5h7x]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Acinetobacter_baumannii Acinetobacter baumannii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5H7X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5H7X FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.76Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">coaD ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=470 ACIBA])</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Pantetheine-phosphate_adenylyltransferase Pantetheine-phosphate adenylyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.3 2.7.7.3] </span></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=5h7x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5h7x OCA], [https://pdbe.org/5h7x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5h7x RCSB], [https://www.ebi.ac.uk/pdbsum/5h7x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5h7x ProSAT]</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=5h7x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5h7x OCA], [http://pdbe.org/5h7x PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5h7x RCSB], [http://www.ebi.ac.uk/pdbsum/5h7x PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5h7x ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/A0A059ZFC5_ACIBA A0A059ZFC5_ACIBA]] Reversibly transfers an adenylyl group from ATP to 4'-phosphopantetheine, yielding dephospho-CoA (dPCoA) and pyrophosphate.[HAMAP-Rule:MF_00151][SAAS:SAAS00109030] | + | [https://www.uniprot.org/uniprot/COAD_ACIBY COAD_ACIBY] Reversibly transfers an adenylyl group from ATP to 4'-phosphopantetheine, yielding dephospho-CoA (dPCoA) and pyrophosphate.[HAMAP-Rule:MF_00151] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Aciba]] | + | [[Category: Acinetobacter baumannii]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Pantetheine-phosphate adenylyltransferase]]
| + | [[Category: Gupta A]] |
| - | [[Category: Gupta, A]] | + | [[Category: Kaur P]] |
| - | [[Category: Kaur, P]] | + | [[Category: Sharma S]] |
| - | [[Category: Sharma, S]] | + | [[Category: Singh PK]] |
| - | [[Category: Singh, P K]] | + | [[Category: Singh TP]] |
| - | [[Category: Singh, T P]] | + | |
| - | [[Category: Transferase]]
| + | |
| Structural highlights
Function
COAD_ACIBY Reversibly transfers an adenylyl group from ATP to 4'-phosphopantetheine, yielding dephospho-CoA (dPCoA) and pyrophosphate.[HAMAP-Rule:MF_00151]
Publication Abstract from PubMed
Phosphopantetheine adenylyltransferase (PPAT, EC. 2.7.7.3) catalyzes an essential step in the reaction that transfers an adenylyl group from adenosine tri phosphate (ATP) to 4'-phosphopantetheine (pPant) yielding 3'- dephospho-coenzyme A (dPCoA) and pyrophosphate (PP) in the coenzyme A (CoA) biosynthesis pathway. The enzyme PPAT from Acinetobacter baumannii (AbPPAT) was cloned, expressed and purified. The binding studies of AbPPAT were carried out with two compounds, trisodium citrate (TSC) and l-ascorbic acid (LAA, vitamin-C) using fluorescence spectroscopic (FS) and surface Plasmon resonance (SPR) methods. Both methods provided similar values of dissociation constants for TSC and LAA which were of the order of 10(-8)M and 10(-5)M respectively. The computer aided docking studies indicated fewer interactions of LAA with AbPPAT as compared to those of TSC. The freshly purified samples of AbPPAT were crystallized. The crystals of AbPPAT were soaked in the solutions containing TSC and LAA. However, the crystals of the complex of AbPPAT with LAA did not diffract well and hence the structure of the complex of AbPPAT with LAA could not be determined. On the other hand, the crystals of the complex of AbPPAT with TSC diffracted well and the structure was determined at 1.76A resolution. It showed that TSC bound to AbPPAT at the ATP binding site and formed several intermolecular contacts including 12 hydrogen bonds. The results of binding studies for both TSC and LAA and the structure of the complex of AbPPAT with TSC clearly indicated a potential role of TSC and LAA as antibacterial agents.
Structural and binding studies of phosphopantetheine adenylyl transferase from Acinetobacter baumannii.,Gupta A, Singh PK, Iqbal N, Sharma P, Baraigya HR, Kaur P, Umar MS, Ahmad F, Sharma A, Owais M, Sharma S, Singh TP Biochim Biophys Acta Proteins Proteom. 2019 Mar 15;1867(6):537-547. doi:, 10.1016/j.bbapap.2019.03.002. PMID:30885618[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Gupta A, Singh PK, Iqbal N, Sharma P, Baraigya HR, Kaur P, Umar MS, Ahmad F, Sharma A, Owais M, Sharma S, Singh TP. Structural and binding studies of phosphopantetheine adenylyl transferase from Acinetobacter baumannii. Biochim Biophys Acta Proteins Proteom. 2019 Mar 15;1867(6):537-547. doi:, 10.1016/j.bbapap.2019.03.002. PMID:30885618 doi:http://dx.doi.org/10.1016/j.bbapap.2019.03.002
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