1bgq

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[[Image:1bgq.gif|left|200px]]
 
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{{Structure
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==RADICICOL BOUND TO THE ATP BINDING SITE OF THE N-TERMINAL DOMAIN OF THE YEAST HSP90 CHAPERONE==
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|PDB= 1bgq |SIZE=350|CAPTION= <scene name='initialview01'>1bgq</scene>, resolution 2.50&Aring;
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<StructureSection load='1bgq' size='340' side='right'caption='[[1bgq]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=RDC:RADICICOL'>RDC</scene>
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<table><tr><td colspan='2'>[[1bgq]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BGQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1BGQ FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=RDC:RADICICOL'>RDC</scene></td></tr>
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}}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1bgq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bgq OCA], [https://pdbe.org/1bgq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1bgq RCSB], [https://www.ebi.ac.uk/pdbsum/1bgq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1bgq ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/HSP82_YEAST HSP82_YEAST] Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. The nucleotide-free form of the dimer is found in an open conformation in which the N-termini are not dimerized and the complex is ready for client protein binding. Binding of ATP induces large conformational changes, resulting in the formation of a ring-like closed structure in which the N-terminal domains associate intramolecularly with the middle domain and also dimerize with each other, stimulating their intrinsic ATPase activity and acting as a clamp on the substrate. Finally, ATP hydrolysis results in the release of the substrate. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function. Required for growth at high temperatures.<ref>PMID:17114002</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bg/1bgq_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1bgq ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The cellular activity of several regulatory and signal transduction proteins, which depend on the Hsp90 molecular chaperone for folding, is markedly decreased by geldanamycin and by radicicol (monorden). We now show that these unrelated compounds both bind to the N-terminal ATP/ADP-binding domain of Hsp90, with radicicol displaying nanomolar affinity, and both inhibit the inherent ATPase activity of Hsp90 which is essential for its function in vivo. Crystal structure determinations of Hsp90 N-terminal domain complexes with geldanamycin and radicicol identify key aspects of their nucleotide mimicry and suggest a rational basis for the design of novel antichaperone drugs.
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'''RADICICOL BOUND TO THE ATP BINDING SITE OF THE N-TERMINAL DOMAIN OF THE YEAST HSP90 CHAPERONE'''
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Structural basis for inhibition of the Hsp90 molecular chaperone by the antitumor antibiotics radicicol and geldanamycin.,Roe SM, Prodromou C, O'Brien R, Ladbury JE, Piper PW, Pearl LH J Med Chem. 1999 Jan 28;42(2):260-6. PMID:9925731<ref>PMID:9925731</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1bgq" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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The cellular activity of several regulatory and signal transduction proteins, which depend on the Hsp90 molecular chaperone for folding, is markedly decreased by geldanamycin and by radicicol (monorden). We now show that these unrelated compounds both bind to the N-terminal ATP/ADP-binding domain of Hsp90, with radicicol displaying nanomolar affinity, and both inhibit the inherent ATPase activity of Hsp90 which is essential for its function in vivo. Crystal structure determinations of Hsp90 N-terminal domain complexes with geldanamycin and radicicol identify key aspects of their nucleotide mimicry and suggest a rational basis for the design of novel antichaperone drugs.
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*[[Heat Shock Protein structures|Heat Shock Protein structures]]
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== References ==
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==About this Structure==
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<references/>
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1BGQ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BGQ OCA].
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__TOC__
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</StructureSection>
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==Reference==
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[[Category: Large Structures]]
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Structural basis for inhibition of the Hsp90 molecular chaperone by the antitumor antibiotics radicicol and geldanamycin., Roe SM, Prodromou C, O'Brien R, Ladbury JE, Piper PW, Pearl LH, J Med Chem. 1999 Jan 28;42(2):260-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9925731 9925731]
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[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Single protein]]
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[[Category: Pearl LH]]
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[[Category: Pearl, L H.]]
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[[Category: Prodromou C]]
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[[Category: Prodromou, C.]]
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[[Category: Roe SM]]
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[[Category: Roe, S M.]]
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[[Category: RDC]]
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[[Category: atp-binding]]
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[[Category: chaperone]]
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[[Category: heat shock]]
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[[Category: inhibitor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:10:46 2008''
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Current revision

RADICICOL BOUND TO THE ATP BINDING SITE OF THE N-TERMINAL DOMAIN OF THE YEAST HSP90 CHAPERONE

PDB ID 1bgq

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