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| | ==High-resolution structure of the complex between calmodulin and a peptide from calcineurin A== | | ==High-resolution structure of the complex between calmodulin and a peptide from calcineurin A== |
| - | <StructureSection load='2w73' size='340' side='right' caption='[[2w73]], [[Resolution|resolution]] 1.45Å' scene=''> | + | <StructureSection load='2w73' size='340' side='right'caption='[[2w73]], [[Resolution|resolution]] 1.45Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2w73]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2W73 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2W73 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2w73]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2W73 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2W73 FirstGlance]. <br> |
| - | </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> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.45Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1j7p|1j7p]], [[2f3z|2f3z]], [[1mf8|1mf8]], [[1nkf|1nkf]], [[2jl2|2jl2]], [[1xfv|1xfv]], [[1k93|1k93]], [[1sk6|1sk6]], [[1y6w|1y6w]], [[1iwq|1iwq]], [[1k90|1k90]], [[1yrt|1yrt]], [[1lvc|1lvc]], [[1cll|1cll]], [[1cdl|1cdl]], [[1xfu|1xfu]], [[1xfy|1xfy]], [[2f3y|2f3y]], [[1xfx|1xfx]], [[1s26|1s26]], [[1j7o|1j7o]], [[1aui|1aui]], [[1yru|1yru]], [[1wrz|1wrz]], [[2v02|2v02]], [[1xfz|1xfz]], [[1xfw|1xfw]], [[2v01|2v01]], [[1pk0|1pk0]], [[1m63|1m63]], [[2be6|2be6]], [[1zot|1zot]], [[1sw8|1sw8]], [[2vay|2vay]], [[1aji|1aji]]</td></tr> | + | <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> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phosphoprotein_phosphatase Phosphoprotein phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.16 3.1.3.16] </span></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=2w73 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2w73 OCA], [https://pdbe.org/2w73 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2w73 RCSB], [https://www.ebi.ac.uk/pdbsum/2w73 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2w73 ProSAT]</span></td></tr> |
| - | <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=2w73 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2w73 OCA], [http://pdbe.org/2w73 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2w73 RCSB], [http://www.ebi.ac.uk/pdbsum/2w73 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2w73 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/PP2BA_HUMAN PP2BA_HUMAN]] Calcium-dependent, calmodulin-stimulated protein phosphatase. This subunit may have a role in the calmodulin activation of calcineurin. Dephosphorylates DNM1L, HSPB1 and SSH1.<ref>PMID:15671020</ref> <ref>PMID:18838687</ref> | + | [https://www.uniprot.org/uniprot/PP2BA_HUMAN PP2BA_HUMAN] Calcium-dependent, calmodulin-stimulated protein phosphatase. This subunit may have a role in the calmodulin activation of calcineurin. Dephosphorylates DNM1L, HSPB1 and SSH1.<ref>PMID:15671020</ref> <ref>PMID:18838687</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | </div> | | </div> |
| | <div class="pdbe-citations 2w73" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 2w73" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Calmodulin 3D structures|Calmodulin 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Phosphoprotein phosphatase]] | + | [[Category: Large Structures]] |
| - | [[Category: Kursula, P]] | + | [[Category: Kursula P]] |
| - | [[Category: Majava, V]] | + | [[Category: Majava V]] |
| - | [[Category: Acetylation]]
| + | |
| - | [[Category: Alternative splicing]]
| + | |
| - | [[Category: Calcium]]
| + | |
| - | [[Category: Calmodulin]]
| + | |
| - | [[Category: Calmodulin-binding]]
| + | |
| - | [[Category: Dimer]]
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| - | [[Category: Ef hand]]
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| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Iron]]
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| - | [[Category: Metal binding protein]]
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| - | [[Category: Metal-binding]]
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| - | [[Category: Metal-binding protein]]
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| - | [[Category: Methylation]]
| + | |
| - | [[Category: Nucleus]]
| + | |
| - | [[Category: Phosphoprotein]]
| + | |
| - | [[Category: Polymorphism]]
| + | |
| - | [[Category: Protein phosphatase]]
| + | |
| - | [[Category: Ubl conjugation]]
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| - | [[Category: Zinc]]
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| Structural highlights
Function
PP2BA_HUMAN Calcium-dependent, calmodulin-stimulated protein phosphatase. This subunit may have a role in the calmodulin activation of calcineurin. Dephosphorylates DNM1L, HSPB1 and SSH1.[1] [2]
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 PubMed
BACKGROUND: Calmodulin (CaM) is a ubiquitously expressed calcium sensor that engages in regulatory interactions with a large number of cellular proteins. Previously, a unique mode of CaM target recognition has been observed in the crystal structure of a complex between CaM and the CaM-binding domain of calcineurin A. METHODOLOGY/PRINCIPAL FINDINGS: We have solved a high-resolution crystal structure of a complex between CaM and the CaM-binding domain of calcineurin A in a novel crystal form, which shows a dimeric assembly of calmodulin, as observed before in the crystal state. We note that the conformation of CaM in this complex is very similar to that of unliganded CaM, and a detailed analysis revels that the CaM-binding motif in calcineurin A is of a novel '1-11' type. However, using small-angle X-ray scattering (SAXS), we show that the complex is fully monomeric in solution, and a structure of a canonically collapsed CaM-peptide complex can easily be fitted into the SAXS data. This result is also supported by size exclusion chromatography, where the addition of the ligand peptide decreases the apparent size of CaM. In addition, we studied the energetics of binding by isothermal titration calorimetry and found them to closely resemble those observed previously for ligand peptides from CaM-dependent kinases. CONCLUSIONS/SIGNIFICANCE: Our results implicate that CaM can also form a complex with the CaM-binding domain of calcineurin in a 1 ratio 1 stoichiometry, in addition to the previously observed 2 ratio 2 arrangement in the crystal state. At the structural level, going from 2 ratio 2 association to two 1 ratio 1 complexes will require domain swapping in CaM, accompanied by the characteristic bending of the central linker helix between the two lobes of CaM.
Domain swapping and different oligomeric States for the complex between calmodulin and the calmodulin-binding domain of calcineurin a.,Majava V, Kursula P PLoS ONE. 2009;4(4):e5402. Epub 2009 Apr 30. PMID:19404396[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Wang Y, Shibasaki F, Mizuno K. Calcium signal-induced cofilin dephosphorylation is mediated by Slingshot via calcineurin. J Biol Chem. 2005 Apr 1;280(13):12683-9. Epub 2005 Jan 24. PMID:15671020 doi:M411494200
- ↑ Cereghetti GM, Stangherlin A, Martins de Brito O, Chang CR, Blackstone C, Bernardi P, Scorrano L. Dephosphorylation by calcineurin regulates translocation of Drp1 to mitochondria. Proc Natl Acad Sci U S A. 2008 Oct 14;105(41):15803-8. doi:, 10.1073/pnas.0808249105. Epub 2008 Oct 6. PMID:18838687 doi:10.1073/pnas.0808249105
- ↑ Majava V, Kursula P. Domain swapping and different oligomeric States for the complex between calmodulin and the calmodulin-binding domain of calcineurin a. PLoS ONE. 2009;4(4):e5402. Epub 2009 Apr 30. PMID:19404396 doi:10.1371/journal.pone.0005402
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