1k0v: Difference between revisions
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< | ==Copper trafficking: the solution structure of Bacillus subtilis CopZ== | ||
<StructureSection load='1k0v' size='340' side='right'caption='[[1k0v]]' scene=''> | |||
You may | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1k0v]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1K0V OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1K0V FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr> | |||
-- | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CU1:COPPER+(I)+ION'>CU1</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1k0v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k0v OCA], [https://pdbe.org/1k0v PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1k0v RCSB], [https://www.ebi.ac.uk/pdbsum/1k0v PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1k0v ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/COPZ_BACSU COPZ_BACSU] Chaperone that serves for the intracellular sequestration and transport of Cu(+). Delivers Cu(+) to the copper-transporting ATPase CopA. | |||
== 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/k0/1k0v_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=1k0v ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
A sequence with a high homology (39% residue identity) with that of the copper-transport CopZ protein from Enterococcus hirae and with the same MXCXXC metal-binding motif has been identified in the genome of Bacillus subtilis, and the corresponding protein has been expressed. The protein, constituted by 73 amino acids, does bind copper(I) under reducing conditions and fully folded in both copper-bound and copper-free forms under the present experimental conditions. The solution structure of the copper-bound form was determined through NMR spectroscopy on an 15N-labeled sample. A total of 1508 meaningful nuclear Overhauser effects, 38 dihedral phi angles, and 48 dihedral psi angles were used in the structural calculations, which lead to a family of 30 conformers with an average rmsd to the mean structure of 0.32 +/- 0.06 A for the backbone and of 0.85 +/- 0.07 A for the heavy atoms. NMR data on the apoprotein also show that, also in this form, the protein is in a folded state and essentially maintains the complete secondary structure. Some disorder is observed in the loop devoted to copper binding. These results are compared with those reported for CopZ from E. hirae whose structure is well-defined only in the apo form. The different behaviors of copper-loaded E. hirae and B. subtilis are tentatively accounted for on the basis of the presence of dithiothreitol used in the latter case, which would stabilize the monomeric form. The comparison is extended to other similar proteins, with particular attention to the copper-binding loop. The nature and the location of conserved residues around the metal-binding site are discussed with respect to their relevance for the metal-binding process. Proposals for the role of CopZ are also presented. | |||
Copper trafficking: the solution structure of Bacillus subtilis CopZ.,Banci L, Bertini I, Del Conte R, Markey J, Ruiz-Duenas FJ Biochemistry. 2001 Dec 25;40(51):15660-8. PMID:11747441<ref>PMID:11747441</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1k0v" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
== | |||
[[Category: Bacillus subtilis]] | [[Category: Bacillus subtilis]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Banci | [[Category: Banci L]] | ||
[[Category: Bertini | [[Category: Bertini I]] | ||
[[Category: Conte | [[Category: Del Conte R]] | ||
[[Category: Markey | [[Category: Markey J]] | ||
[[Category: Ruiz-Duenas | [[Category: Ruiz-Duenas FJ]] | ||
Latest revision as of 11:39, 22 May 2024
Copper trafficking: the solution structure of Bacillus subtilis CopZCopper trafficking: the solution structure of Bacillus subtilis CopZ
Structural highlights
FunctionCOPZ_BACSU Chaperone that serves for the intracellular sequestration and transport of Cu(+). Delivers Cu(+) to the copper-transporting ATPase CopA. 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 PubMedA sequence with a high homology (39% residue identity) with that of the copper-transport CopZ protein from Enterococcus hirae and with the same MXCXXC metal-binding motif has been identified in the genome of Bacillus subtilis, and the corresponding protein has been expressed. The protein, constituted by 73 amino acids, does bind copper(I) under reducing conditions and fully folded in both copper-bound and copper-free forms under the present experimental conditions. The solution structure of the copper-bound form was determined through NMR spectroscopy on an 15N-labeled sample. A total of 1508 meaningful nuclear Overhauser effects, 38 dihedral phi angles, and 48 dihedral psi angles were used in the structural calculations, which lead to a family of 30 conformers with an average rmsd to the mean structure of 0.32 +/- 0.06 A for the backbone and of 0.85 +/- 0.07 A for the heavy atoms. NMR data on the apoprotein also show that, also in this form, the protein is in a folded state and essentially maintains the complete secondary structure. Some disorder is observed in the loop devoted to copper binding. These results are compared with those reported for CopZ from E. hirae whose structure is well-defined only in the apo form. The different behaviors of copper-loaded E. hirae and B. subtilis are tentatively accounted for on the basis of the presence of dithiothreitol used in the latter case, which would stabilize the monomeric form. The comparison is extended to other similar proteins, with particular attention to the copper-binding loop. The nature and the location of conserved residues around the metal-binding site are discussed with respect to their relevance for the metal-binding process. Proposals for the role of CopZ are also presented. Copper trafficking: the solution structure of Bacillus subtilis CopZ.,Banci L, Bertini I, Del Conte R, Markey J, Ruiz-Duenas FJ Biochemistry. 2001 Dec 25;40(51):15660-8. PMID:11747441[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
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