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1kax

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[[Image:1kax.gif|left|200px]]<br /><applet load="1kax" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1kax, resolution 1.7&Aring;" />
 
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'''70KD HEAT SHOCK COGNATE PROTEIN ATPASE DOMAIN, K71M MUTANT'''<br />
 
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==Overview==
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==70KD HEAT SHOCK COGNATE PROTEIN ATPASE DOMAIN, K71M MUTANT==
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It has been proposed that lysine 71 of the bovine 70-kDa heat shock cognate protein might participate in catalysis of ATP hydrolysis by stabilizing an H2O molecule or an OH- ion for nucleophilic attack on the gamma-phosphate of the nucleotide (Flaherty, K. M., Wilbanks, S. M., DeLuca-Flaherty, C., and McKay, D. B. (1994) J. Biol. Chem. 12899-12907; Wilbanks, S. M., DeLuca-Flaherty, C., and McKay, D. B. (1994) J. Biol. Chem. 269, 12893-12898). To test this hypothesis, lysine 71 of the ATPase fragment 70-kDa heat shock cognate protein has been mutated to glutamic acid, methionine, and alanine; and the kinetic and structural properties of the mutant proteins have been determined. All three mutant proteins are devoid of measurable ATP hydrolysis activity. Crystal structures of the mutant proteins have been determined to a resolution of 1.7 A; all three have ATP in the nucleotide binding site. These data identify lysine 71 as a residue that is essential for chemical hydrolysis of ATP.
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<StructureSection load='1kax' size='340' side='right'caption='[[1kax]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1kax]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KAX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KAX FirstGlance]. <br>
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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]] 1.7&#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=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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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=1kax FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kax OCA], [https://pdbe.org/1kax PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kax RCSB], [https://www.ebi.ac.uk/pdbsum/1kax PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kax ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/HSP7C_BOVIN HSP7C_BOVIN] Acts as a repressor of transcriptional activation. Inhibits the transcriptional coactivator activity of CITED1 on Smad-mediated transcription. Chaperone. Component of the PRP19-CDC5L complex that forms an integral part of the spliceosome and is required for activating pre-mRNA splicing. May have a scaffolding role in the spliceosome assembly as it contacts all other components of the core complex (By similarity).
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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/ka/1kax_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=1kax ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1KAX is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus] with <scene name='pdbligand=CL:'>CL</scene>, <scene name='pdbligand=MG:'>MG</scene>, <scene name='pdbligand=K:'>K</scene> and <scene name='pdbligand=ATP:'>ATP</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Adenosinetriphosphatase Adenosinetriphosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.1.3 3.6.1.3] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KAX OCA].
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*[[Heat Shock Protein structures|Heat Shock Protein structures]]
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__TOC__
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==Reference==
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</StructureSection>
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Lysine 71 of the chaperone protein Hsc70 Is essential for ATP hydrolysis., O'Brien MC, Flaherty KM, McKay DB, J Biol Chem. 1996 Jul 5;271(27):15874-8. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=8663302 8663302]
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[[Category: Adenosinetriphosphatase]]
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[[Category: Bos taurus]]
[[Category: Bos taurus]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Brien, M C.O.]]
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[[Category: Flaherty KM]]
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[[Category: Flaherty, K M.]]
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[[Category: Mckay DB]]
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[[Category: Mckay, D B.]]
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[[Category: O'Brien MC]]
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[[Category: ATP]]
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[[Category: CL]]
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[[Category: K]]
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[[Category: MG]]
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[[Category: atp-binding]]
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[[Category: heat shock]]
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[[Category: hydrolase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:32:01 2008''
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Current revision

70KD HEAT SHOCK COGNATE PROTEIN ATPASE DOMAIN, K71M MUTANT

PDB ID 1kax

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