2g9b

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[[Image:2g9b.gif|left|200px]]
 
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{{Structure
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==NMR solution structure of CA2+-loaded calbindin D28K==
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|PDB= 2g9b |SIZE=350|CAPTION= <scene name='initialview01'>2g9b</scene>
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<StructureSection load='2g9b' size='340' side='right'caption='[[2g9b]]' 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'>[[2g9b]] 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=2G9B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2G9B 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= Calb1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Rattus norvegicus])
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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=2g9b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2g9b OCA], [https://pdbe.org/2g9b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2g9b RCSB], [https://www.ebi.ac.uk/pdbsum/2g9b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2g9b 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/CALB1_RAT CALB1_RAT] Buffers cytosolic calcium. May stimulate a membrane Ca(2+)-ATPase and a 3',5'-cyclic nucleotide phosphodiesterase.
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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/g9/2g9b_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=2g9b 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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Calbindin-D(28K) is a Ca2+-binding protein, performing roles as both a calcium buffer and calcium sensor. The NMR solution structure of Ca2+-loaded calbindin-D(28K) reveals a single, globular fold consisting of six distinct EF-hand subdomains, which coordinate Ca2+ in loops on EF1, EF3, EF4 and EF5. Target peptides from Ran-binding protein M and myo-inositol monophosphatase, along with a new target from procaspase-3, are shown to interact with the protein on a surface comprised of alpha5 (EF3), alpha8 (EF4) and the EF2-EF3 and EF4-EF5 loops. Fluorescence experiments reveal that calbindin-D(28K) adopts discrete hydrophobic states as it binds Ca2+. The structure, binding interface and hydrophobic characteristics of Ca2+-loaded calbindin-D(28K) provide the first detailed insights into how this essential protein may function. This structure is one of the largest high-resolution NMR structures and the largest monomeric EF-hand protein to be solved to date.
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'''NMR solution structure of CA2+-loaded calbindin D28K'''
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Structure, binding interface and hydrophobic transitions of Ca2+-loaded calbindin-D(28K).,Kojetin DJ, Venters RA, Kordys DR, Thompson RJ, Kumar R, Cavanagh J Nat Struct Mol Biol. 2006 Jul;13(7):641-7. Epub 2006 Jun 25. PMID:16799559<ref>PMID:16799559</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 2g9b" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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Calbindin-D(28K) is a Ca2+-binding protein, performing roles as both a calcium buffer and calcium sensor. The NMR solution structure of Ca2+-loaded calbindin-D(28K) reveals a single, globular fold consisting of six distinct EF-hand subdomains, which coordinate Ca2+ in loops on EF1, EF3, EF4 and EF5. Target peptides from Ran-binding protein M and myo-inositol monophosphatase, along with a new target from procaspase-3, are shown to interact with the protein on a surface comprised of alpha5 (EF3), alpha8 (EF4) and the EF2-EF3 and EF4-EF5 loops. Fluorescence experiments reveal that calbindin-D(28K) adopts discrete hydrophobic states as it binds Ca2+. The structure, binding interface and hydrophobic characteristics of Ca2+-loaded calbindin-D(28K) provide the first detailed insights into how this essential protein may function. This structure is one of the largest high-resolution NMR structures and the largest monomeric EF-hand protein to be solved to date.
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*[[S100 proteins 3D structures|S100 proteins 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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2G9B 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=2G9B 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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Structure, binding interface and hydrophobic transitions of Ca2+-loaded calbindin-D(28K)., Kojetin DJ, Venters RA, Kordys DR, Thompson RJ, Kumar R, Cavanagh J, Nat Struct Mol Biol. 2006 Jul;13(7):641-7. Epub 2006 Jun 25. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16799559 16799559]
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[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
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[[Category: Single protein]]
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[[Category: Cavanagh J]]
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[[Category: Cavanagh, J.]]
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[[Category: Kojetin DJ]]
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[[Category: Kojetin, D J.]]
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[[Category: Kordys DR]]
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[[Category: Kordys, D R.]]
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[[Category: Kumar R]]
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[[Category: Kumar, R.]]
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[[Category: Thompson RJ]]
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[[Category: Thompson, R J.]]
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[[Category: Venters RA]]
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[[Category: Venters, R A.]]
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[[Category: ca2+-binding]]
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[[Category: ef-hand]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:01:56 2008''
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Current revision

NMR solution structure of CA2+-loaded calbindin D28K

PDB ID 2g9b

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