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2lc5

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==Calmodulin-like Protein from Entamoeba histolytica: Solution Structure and Calcium-Binding Properties of a Partially Folded Protein==
==Calmodulin-like Protein from Entamoeba histolytica: Solution Structure and Calcium-Binding Properties of a Partially Folded Protein==
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<StructureSection load='2lc5' size='340' side='right' caption='[[2lc5]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
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<StructureSection load='2lc5' size='340' side='right'caption='[[2lc5]]' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[2lc5]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Entamoeba_histolytica_hm-1:imss Entamoeba histolytica hm-1:imss]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2ktg 2ktg]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LC5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2LC5 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[2lc5]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Entamoeba_histolytica_HM-1:IMSS Entamoeba histolytica HM-1:IMSS]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2ktg 2ktg]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LC5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2LC5 FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr>
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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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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">EHI_100270 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=294381 Entamoeba histolytica HM-1:IMSS])</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=CA:CALCIUM+ION'>CA</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2lc5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lc5 OCA], [http://pdbe.org/2lc5 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2lc5 RCSB], [http://www.ebi.ac.uk/pdbsum/2lc5 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2lc5 ProSAT]</span></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=2lc5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lc5 OCA], [https://pdbe.org/2lc5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2lc5 RCSB], [https://www.ebi.ac.uk/pdbsum/2lc5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2lc5 ProSAT]</span></td></tr>
</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/C4M0U8_ENTH1 C4M0U8_ENTH1]
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The mechanism of Ca(2+)-signaling in the protozoan parasite Entamoeba histolytica is yet to be understood as many of the key regulators are still to be identified. E. histolytica encodes a number of multi-EF-hand Ca(2+)-binding proteins (EhCaBPs). Functionally only one of these molecules, EhCaBP1, has been characterized to date. The calmodulin-like protein from E. histolytica (abbreviated as EhCaM or EhCaBP3) is a 17.23 kDa monomeric protein that shows maximum sequence identity with heterologous calmodulins (CaMs). Though CaM activity has been biochemically shown in E. histolytica, there are no reports on the presence of a typical CaM. In an attempt to understand the structural and functional similarity of EhCaM with CaM, we have determined the three-dimensional (3D) solution structure of EhCaM using NMR. The EhCaM has a well-folded N-terminal domain and an unstructured C-terminal counterpart. Further, it sequentially binds only two calcium ions, an unusual mode of Ca(2+)-binding among the known CaBPs, notably both in the N-terminal domain of EhCaM. Further, EhCaM is present in the nucleus in addition to the cytoplasm as detected by immunofluorescence staining, unlike other EhCaBPs that are detected only in the cytoplasm. Therefore, this protein is likely to have a different function. The presence of unusual and a diverse set of CaBPs in E. histolytica suggests a distinct Ca(2+)-signaling process in E. histolytica. The results reported here help in understanding the structure-function relationship of CaBPs including their Ca(2+)-binding properties.
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Calmodulin-like Protein from Entamoeba histolytica: Solution Structure and Calcium-Binding Properties of a Partially Folded Protein.,Rout AK, Padhan N, Barnwal RP, Bhattacharya A, Chary KV Biochemistry. 2010 Dec 21. PMID:21114322<ref>PMID:21114322</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 2lc5" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Entamoeba histolytica hm-1:imss]]
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[[Category: Entamoeba histolytica HM-1:IMSS]]
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[[Category: Barnwal, R P]]
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[[Category: Large Structures]]
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[[Category: Bhattacharya, A]]
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[[Category: Barnwal RP]]
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[[Category: Chary, K V]]
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[[Category: Bhattacharya A]]
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[[Category: Padhan, N]]
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[[Category: Chary KV]]
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[[Category: Rout, A K]]
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[[Category: Padhan N]]
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[[Category: Ca-binding protein]]
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[[Category: Rout AK]]
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[[Category: Cam-like]]
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[[Category: Ehcam]]
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[[Category: Entamoeba histolytica]]
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[[Category: Metal binding protein]]
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[[Category: Partially structured protein]]
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Current revision

Calmodulin-like Protein from Entamoeba histolytica: Solution Structure and Calcium-Binding Properties of a Partially Folded Protein

PDB ID 2lc5

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