3tyc: Difference between revisions

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<StructureSection load='3tyc' size='340' side='right'caption='[[3tyc]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
<StructureSection load='3tyc' size='340' side='right'caption='[[3tyc]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3tyc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_anthracis_a2012 Bacillus anthracis a2012]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TYC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TYC FirstGlance]. <br>
<table><tr><td colspan='2'>[[3tyc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_anthracis_str._A2012 Bacillus anthracis str. A2012]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TYC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TYC FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=XHP:2-AMINO-6-METHYLIDENE-6,7-DIHYDROPTERIDIN-4(3H)-ONE'>XHP</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]] 2.303&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1tws|1tws]]</div></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=XHP:2-AMINO-6-METHYLIDENE-6,7-DIHYDROPTERIDIN-4(3H)-ONE'>XHP</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">folP, BAS0071, BA_0071, GBAA_0071 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=191218 Bacillus anthracis A2012])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Dihydropteroate_synthase Dihydropteroate synthase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.15 2.5.1.15] </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=3tyc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tyc OCA], [https://pdbe.org/3tyc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3tyc RCSB], [https://www.ebi.ac.uk/pdbsum/3tyc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3tyc ProSAT]</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=3tyc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tyc OCA], [https://pdbe.org/3tyc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3tyc RCSB], [https://www.ebi.ac.uk/pdbsum/3tyc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3tyc ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/Q81VW8_BACAN Q81VW8_BACAN]
The sulfonamide antibiotics inhibit dihydropteroate synthase (DHPS), a key enzyme in the folate pathway of bacteria and primitive eukaryotes. However, resistance mutations have severely compromised the usefulness of these drugs. We report structural, computational, and mutagenesis studies on the catalytic and resistance mechanisms of DHPS. By performing the enzyme-catalyzed reaction in crystalline DHPS, we have structurally characterized key intermediates along the reaction pathway. Results support an S(N)1 reaction mechanism via formation of a novel cationic pterin intermediate. We also show that two conserved loops generate a substructure during catalysis that creates a specific binding pocket for p-aminobenzoic acid, one of the two DHPS substrates. This substructure, together with the pterin-binding pocket, explains the roles of the conserved active-site residues and reveals how sulfonamide resistance arises.
 
Catalysis and sulfa drug resistance in dihydropteroate synthase.,Yun MK, Wu Y, Li Z, Zhao Y, Waddell MB, Ferreira AM, Lee RE, Bashford D, White SW Science. 2012 Mar 2;335(6072):1110-4. PMID:22383850<ref>PMID:22383850</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3tyc" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Dihydropteroate synthase 3D structures|Dihydropteroate synthase 3D structures]]
*[[Dihydropteroate synthase 3D structures|Dihydropteroate synthase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bacillus anthracis a2012]]
[[Category: Bacillus anthracis str. A2012]]
[[Category: Dihydropteroate synthase]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: White, S W]]
[[Category: White SW]]
[[Category: Yun, M K]]
[[Category: Yun M-K]]
[[Category: Anthracis]]
[[Category: Dihydropteroate]]
[[Category: Folate biosynthesis]]
[[Category: Pterine]]
[[Category: Tim barrel]]
[[Category: Transferase]]

Latest revision as of 16:43, 14 March 2024

Dihydropteroate Synthase in complex with DHP+Dihydropteroate Synthase in complex with DHP+

Structural highlights

3tyc is a 2 chain structure with sequence from Bacillus anthracis str. A2012. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.303Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q81VW8_BACAN

See Also

3tyc, resolution 2.30Å

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