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1ckr

From Proteopedia

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[[Image:1ckr.gif|left|200px]]
 
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{{Structure
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==HIGH RESOLUTION SOLUTION STRUCTURE OF THE HEAT SHOCK COGNATE-70 KD SUBSTRATE BINDING DOMAIN OBTAINED BY MULTIDIMENSIONAL NMR TECHNIQUES==
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|PDB= 1ckr |SIZE=350|CAPTION= <scene name='initialview01'>1ckr</scene>
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<StructureSection load='1ckr' size='340' side='right'caption='[[1ckr]]' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND=
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<table><tr><td colspan='2'>[[1ckr]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CKR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CKR 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">Solution NMR</td></tr>
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|GENE=
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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=1ckr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ckr OCA], [https://pdbe.org/1ckr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ckr RCSB], [https://www.ebi.ac.uk/pdbsum/1ckr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ckr ProSAT]</span></td></tr>
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}}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/HSP7C_RAT HSP7C_RAT] 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/ck/1ckr_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=1ckr 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 three-dimensional structure for the substrate-binding domain of the mammalian chaperone protein Hsc70 of the 70 kDa heat shock class (HSP70) is presented. This domain includes residues 383-540 (18 kDa) and is necessary for the binding of the chaperone with substrate proteins and peptides. The high-resolution NMR solution structure is based on 4150 experimental distance constraints leading to an average root-mean-square precision of 0.38 A for the backbone atoms and 0.76 A for all atoms in the beta-sandwich sub-domain. The protein is observed to bind residue Leu539 in its hydrophobic substrate-binding groove by intramolecular interaction. The position of a helical latch differs dramatically from what is observed in the crystal and solution structures of the homologous prokaryotic chaperone DnaK. In the Hsc70 structure, the helix lies in a hydrophobic groove and is anchored by a buried salt-bridge. Residues involved in this salt-bridge appear to be important for the allosteric functioning of the protein. A mechanism for interdomain allosteric modulation of substrate-binding is proposed. It involves large-scale movements of the helical domain, redefining the location of the hinge area that enables such motions.
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'''HIGH RESOLUTION SOLUTION STRUCTURE OF THE HEAT SHOCK COGNATE-70 KD SUBSTRATE BINDING DOMAIN OBTAINED BY MULTIDIMENSIONAL NMR TECHNIQUES'''
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High-resolution solution structure of the 18 kDa substrate-binding domain of the mammalian chaperone protein Hsc70.,Morshauser RC, Hu W, Wang H, Pang Y, Flynn GC, Zuiderweg ER J Mol Biol. 1999 Jun 25;289(5):1387-403. PMID:10373374<ref>PMID:10373374</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 1ckr" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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The three-dimensional structure for the substrate-binding domain of the mammalian chaperone protein Hsc70 of the 70 kDa heat shock class (HSP70) is presented. This domain includes residues 383-540 (18 kDa) and is necessary for the binding of the chaperone with substrate proteins and peptides. The high-resolution NMR solution structure is based on 4150 experimental distance constraints leading to an average root-mean-square precision of 0.38 A for the backbone atoms and 0.76 A for all atoms in the beta-sandwich sub-domain. The protein is observed to bind residue Leu539 in its hydrophobic substrate-binding groove by intramolecular interaction. The position of a helical latch differs dramatically from what is observed in the crystal and solution structures of the homologous prokaryotic chaperone DnaK. In the Hsc70 structure, the helix lies in a hydrophobic groove and is anchored by a buried salt-bridge. Residues involved in this salt-bridge appear to be important for the allosteric functioning of the protein. A mechanism for interdomain allosteric modulation of substrate-binding is proposed. It involves large-scale movements of the helical domain, redefining the location of the hinge area that enables such motions.
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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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1CKR is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CKR 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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High-resolution solution structure of the 18 kDa substrate-binding domain of the mammalian chaperone protein Hsc70., Morshauser RC, Hu W, Wang H, Pang Y, Flynn GC, Zuiderweg ER, J Mol Biol. 1999 Jun 25;289(5):1387-403. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10373374 10373374]
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[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
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[[Category: Single protein]]
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[[Category: Flynn GC]]
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[[Category: Flynn, G C.]]
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[[Category: Hu W]]
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[[Category: Hu, W.]]
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[[Category: Morshauser RC]]
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[[Category: Morshauser, R C.]]
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[[Category: Pang Y]]
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[[Category: Pang, Y.]]
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[[Category: Wang H]]
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[[Category: Wang, H.]]
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[[Category: Zuiderweg ERP]]
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[[Category: Zuiderweg, E R.P.]]
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[[Category: hsp70]]
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[[Category: molecular chaperone]]
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[[Category: peptide binding]]
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[[Category: protein folding]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:25:38 2008''
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Current revision

HIGH RESOLUTION SOLUTION STRUCTURE OF THE HEAT SHOCK COGNATE-70 KD SUBSTRATE BINDING DOMAIN OBTAINED BY MULTIDIMENSIONAL NMR TECHNIQUES

PDB ID 1ckr

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