1aj0: Difference between revisions

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-[[Image:1aj0.gif|left|200px]]
- {{Structure
+==CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF E. COLI DIHYDROPTEROATE SYNTHASE==
-|PDB= 1aj0 |SIZE=350|CAPTION= <scene name='initialview01'>1aj0</scene>, resolution 2.0&Aring;
+<StructureSection load='1aj0' size='340' side='right'caption='[[1aj0]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
-|SITE=
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=PH2:2-AMINO-6-HYDROXYMETHYL-7,8-DIHYDRO-3H-PTERIDIN-4-ONE'>PH2</scene>, <scene name='pdbligand=SAN:SULFANILAMIDE'>SAN</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>
+<table><tr><td colspan='2'>[[1aj0]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AJ0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1AJ0 FirstGlance]. <br>
-|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Dihydropteroate_synthase Dihydropteroate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.15 2.5.1.15] </span>
+</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&#8491;</td></tr>
-|GENE=
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PH2:2-AMINO-6-HYDROXYMETHYL-7,8-DIHYDRO-3H-PTERIDIN-4-ONE'>PH2</scene>, <scene name='pdbligand=SAN:SULFANILAMIDE'>SAN</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
-|DOMAIN=
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1aj0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aj0 OCA], [https://pdbe.org/1aj0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1aj0 RCSB], [https://www.ebi.ac.uk/pdbsum/1aj0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1aj0 ProSAT]</span></td></tr>
-|RELATEDENTRY=
+</table>
-|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1aj0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aj0 OCA], [http://www.ebi.ac.uk/pdbsum/1aj0 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1aj0 RCSB]</span>
+== Function ==
-}}
+[https://www.uniprot.org/uniprot/DHPS_ECOLI DHPS_ECOLI] DHPS catalyzes the formation of the immediate precursor of folic acid. It is implicated in resistance to sulfonamide.<ref>PMID:368012</ref>
+== 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/aj/1aj0_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/main_output.php?pdb_ID=1aj0 ConSurf].
+<div style="clear:both"></div>
-'''CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF E. COLI DIHYDROPTEROATE SYNTHASE'''
+==See Also==
+*[[Dihydropteroate synthase 3D structures|Dihydropteroate synthase 3D structures]]
+== References ==
-==Overview==
+<references/>
-Sulfonamides were amongst the first clinically useful antibacterial agents to be discovered. The identification of sulfanilamide as the active component of the dye Prontosil rubrum led to the synthesis of clinically useful analogues. Today sulfamethoxazole (in combination with trimethoprim), is used to treat urinary tract infections caused by bacteria such as Escherichia coli and is also a first-line treatment for pneumonia caused by the fungus Pneumocystis carinii, a common condition in AIDS patients. The site of action is the de novo folate biosynthesis enzyme dihydropteroate synthase (DHPS) where sulfonamides act as analogues of one of the substrates, para-aminobenzoic acid (pABA). We report here the crystal structure of E.coli DHPS at 2.0 A resolution refined to an R-factor of 0.185. The single domain of 282 residues forms an eight-stranded alpha/beta-barrel. The 7,8-dihydropterin pyrophosphate (DHPPP) substrate binds in a deep cleft in the barrel, whilst sulfanilamide binds closer to the surface. The DHPPP ligand site is highly conserved amongst prokaryotic and eukaryotic DHPSs.
+__TOC__
+</StructureSection>
-==About this Structure==
-AJ0 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AJ0 OCA].
-==Reference==
-Crystal structure of the anti-bacterial sulfonamide drug target dihydropteroate synthase., Achari A, Somers DO, Champness JN, Bryant PK, Rosemond J, Stammers DK, Nat Struct Biol. 1997 Jun;4(6):490-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9187658 9187658]
-[[Category: Dihydropteroate synthase]]
 [[Category: Escherichia coli]]
-[[Category: Single protein]]
+[[Category: Large Structures]]
-[[Category: Achari, A.]]
+[[Category: Achari A]]
-[[Category: Bryant, P K.]]
+[[Category: Bryant PK]]
-[[Category: Champness, J N.]]
+[[Category: Champness JN]]
-[[Category: Rosemond, J.]]
+[[Category: Rosemond J]]
-[[Category: Somers, D O.]]
+[[Category: Somers DO]]
-[[Category: Stammers, D K.]]
+[[Category: Stammers DK]]
-[[Category: antibiotic]]
-[[Category: biosynthesis]]
-[[Category: folate]]
-[[Category: resistance]]
-[[Category: synthase]]
-[[Category: transferase]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 18:41:21 2008''