1f28: Difference between revisions

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[[Image:1f28.gif|left|200px]]


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==CRYSTAL STRUCTURE OF THYMIDYLATE SYNTHASE FROM PNEUMOCYSTIS CARINII BOUND TO DUMP AND BW1843U89==
The line below this paragraph, containing "STRUCTURE_1f28", creates the "Structure Box" on the page.
<StructureSection load='1f28' size='340' side='right'caption='[[1f28]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)  
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1f28]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Pneumocystis_carinii Pneumocystis carinii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1F28 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1F28 FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=F89:S)-2-(5(((1,2-DIHYDRO-3-METHYL-1-OXOBENZO(F)QUINAZOLIN-9-YL)METHYL)AMINO)1-OXO-2-ISOINDOLINYL)GLUTARIC+ACID'>F89</scene>, <scene name='pdbligand=UMP:2-DEOXYURIDINE+5-MONOPHOSPHATE'>UMP</scene></td></tr>
{{STRUCTURE_1f28| PDB=1f28 |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1f28 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1f28 OCA], [https://pdbe.org/1f28 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1f28 RCSB], [https://www.ebi.ac.uk/pdbsum/1f28 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1f28 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TYSY_PNECA TYSY_PNECA]
== 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/f2/1f28_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=1f28 ConSurf].
<div style="clear:both"></div>


'''CRYSTAL STRUCTURE OF THYMIDYLATE SYNTHASE FROM PNEUMOCYSTIS CARINII BOUND TO DUMP AND BW1843U89'''
==See Also==
 
*[[Thymidylate synthase 3D structures|Thymidylate synthase 3D structures]]
 
__TOC__
==Overview==
</StructureSection>
BACKGROUND: Using fixed receptor sites derived from high-resolution crystal structures in structure-based drug design does not properly account for ligand-induced enzyme conformational change and imparts a bias into the discovery and design of novel ligands. We sought to facilitate the design of improved drug leads by defining residues most likely to change conformation, and then defining a minimal manifold of possible conformations of a target site for drug design based on a small number of identified flexible residues. RESULTS: The crystal structure of thymidylate synthase from an important pathogenic target Pneumocystis carinii (PcTS) bound to its substrate and the inhibitor, BW1843U89, is reported here and reveals a new conformation with respect to the structure of PcTS bound to substrate and the more conventional antifolate inhibitor, CB3717. We developed an algorithm for determining which residues provide 'soft spots' in the protein, regions where conformational adaptation suggests possible modifications for a drug lead that may yield higher affinity. Remodeling the active site of thymidylate synthase with new conformations for only three residues that were identified with this algorithm yields scores for ligands that are compatible with experimental kinetic data. CONCLUSIONS: Based on the examination of many protein/ligand complexes, we develop an algorithm (SOFTSPOTS) for identifying regions of a protein target that are more likely to accommodate plastically to regions of a drug molecule. Using these indicators we develop a second algorithm (PLASTIC) that provides a minimal manifold of possible conformations of a protein target for drug design, reducing the bias in structure-based drug design imparted by structures of enzymes co-crystallized with inhibitors.
[[Category: Large Structures]]
 
==About this Structure==
1F28 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Pneumocystis_carinii Pneumocystis carinii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1F28 OCA].
 
==Reference==
Approaches to solving the rigid receptor problem by identifying a minimal set of flexible residues during ligand docking., Anderson AC, O'Neil RH, Surti TS, Stroud RM, Chem Biol. 2001 May;8(5):445-57. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11358692 11358692]
[[Category: Pneumocystis carinii]]
[[Category: Pneumocystis carinii]]
[[Category: Single protein]]
[[Category: Anderson AC]]
[[Category: Thymidylate synthase]]
[[Category: O'Neil RH]]
[[Category: Anderson, A C.]]
[[Category: Stroud RM]]
[[Category: Neil, R H.O.]]
[[Category: Surti TS]]
[[Category: Stroud, R M.]]
[[Category: Surti, T S.]]
[[Category: Beta-sheet]]
[[Category: Protein-inhibitor complex]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 15:48:02 2008''

Latest revision as of 13:09, 20 March 2024

CRYSTAL STRUCTURE OF THYMIDYLATE SYNTHASE FROM PNEUMOCYSTIS CARINII BOUND TO DUMP AND BW1843U89CRYSTAL STRUCTURE OF THYMIDYLATE SYNTHASE FROM PNEUMOCYSTIS CARINII BOUND TO DUMP AND BW1843U89

Structural highlights

1f28 is a 4 chain structure with sequence from Pneumocystis carinii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.9Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

TYSY_PNECA

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

1f28, resolution 1.90Å

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