2f42: Difference between revisions
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==dimerization and U-box domains of Zebrafish C-terminal of HSP70 interacting protein== | ==dimerization and U-box domains of Zebrafish C-terminal of HSP70 interacting protein== | ||
<StructureSection load='2f42' size='340' side='right' caption='[[2f42]], [[Resolution|resolution]] 2.50Å' scene=''> | <StructureSection load='2f42' size='340' side='right'caption='[[2f42]], [[Resolution|resolution]] 2.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2f42]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[2f42]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Brachidanio_rerio Brachidanio rerio]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2F42 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2F42 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">stub1 (amino acids 112-284) ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">stub1 (amino acids 112-284) ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7955 Brachidanio rerio])</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2f42 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2f42 OCA], [https://pdbe.org/2f42 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2f42 RCSB], [https://www.ebi.ac.uk/pdbsum/2f42 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2f42 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Brachidanio rerio]] | [[Category: Brachidanio rerio]] | ||
[[Category: Large Structures]] | |||
[[Category: Misra, S]] | [[Category: Misra, S]] | ||
[[Category: Nix, J C]] | [[Category: Nix, J C]] | ||
Revision as of 13:37, 17 February 2021
dimerization and U-box domains of Zebrafish C-terminal of HSP70 interacting proteindimerization and U-box domains of Zebrafish C-terminal of HSP70 interacting protein
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe heat-shock proteins Hsp70 and Hsp90 play a crucial role in regulating protein quality control both by refolding and by preventing the aggregation of misfolded proteins. It has recently been shown that Hsp70 and Hsp90 act not only in protein refolding but also cooperate with the C terminus of Hsp70 interacting protein (CHIP), a multidomain ubiquitin ligase, to mediate the degradation of unfolded proteins. We present the crystal structure of the helical linker domain and U-box domain of zebrafish CHIP (DrCHIP-HU). The structure of DrCHIP-HU shows a symmetric homodimer. The conformation of the helical linker domains and the relative positions of the helical and U-box domains differ substantially in DrCHIP-HU from those in a recently published structure of an asymmetric dimer of mammalian (mouse) CHIP. We used an in vitro ubiquitination assay to identify residues, located on two long loops and a central alpha helix of the CHIP U-box domain, that are important for interacting with the ubiquitin-conjugating enzyme UbcH5b. In addition, we used NMR spectroscopy to define a complementary interaction surface located on the N-terminal alpha helix and the L4 and L7 loops of UbcH5b. Our results provide insights into conformational variability in the domain arrangement of CHIP and into U-box-mediated recruitment of UbcH5b for the ubiquitination of Hsp70 and Hsp90 substrates. Structure and interactions of the helical and U-box domains of CHIP, the C terminus of HSP70 interacting protein.,Xu Z, Devlin KI, Ford MG, Nix JC, Qin J, Misra S Biochemistry. 2006 Apr 18;45(15):4749-59. PMID:16605243[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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