1aui

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[[Image:1aui.jpg|left|200px]]<br /><applet load="1aui" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1aui, resolution 2.1&Aring;" />
 
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'''HUMAN CALCINEURIN HETERODIMER'''<br />
 
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==Overview==
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==HUMAN CALCINEURIN HETERODIMER==
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Calcineurin (CaN) is a calcium- and calmodulin-dependent protein, serine/threonine phosphate which is critical for several important, cellular processes, including T-cell activation. CaN is the target of the, immunosuppressive drugs cyclosporin A and FK506, which inhibit CaN after, forming complexes with cytoplasmic binding proteins (cyclophilin and, FKBP12, respectively). We report here the crystal structures of, full-length human CaN at 2.1 A resolution and of the complex of human CaN, with FKBP12-FK506 at 3.5 A resolution. In the native CaN structure, an, auto-inhibitory element binds at the Zn/Fe-containing active site. The, metal-site geometry and active-site water structure suggest a catalytic, mechanism involving nucleophilic attack on the substrate phosphate by a, metal-activated water molecule. In the FKBP12-FK506-CaN complex, the, auto-inhibitory element is displaced from the active site. The site of, binding of FKBP12-FK506 appears to be shared by other non-competitive, inhibitors of calcineurin, including a natural anchoring protein.
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<StructureSection load='1aui' size='340' side='right'caption='[[1aui]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1aui]] is a 2 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=1AUI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1AUI FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</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>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=1aui FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aui OCA], [https://pdbe.org/1aui PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1aui RCSB], [https://www.ebi.ac.uk/pdbsum/1aui PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1aui ProSAT]</span></td></tr>
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</table>
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== Function ==
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[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>
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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/au/1aui_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=1aui ConSurf].
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<div style="clear:both"></div>
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==Disease==
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==See Also==
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Known diseases associated with this structure: Cornea plana congenita, recessive OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=603288 603288]], Myotonic dystrophy, type 2 OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=116955 116955]]
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*[[Calcineurin|Calcineurin]]
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*[[Calcineurin 3D structures|Calcineurin 3D structures]]
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==About this Structure==
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== References ==
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1AUI is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=CA:CALCIUM ION'>CA</scene>, <scene name='pdbligand=ZN:ZINC ION'>ZN</scene> and <scene name='pdbligand=FE:FE (III) ION'>FE</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [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] Known structural/functional Sites: <scene name='pdbsite=CA1:Ca Binding Site'>CA1</scene>, <scene name='pdbsite=CA2:Ca Binding Site'>CA2</scene>, <scene name='pdbsite=CA3:Ca Binding Site'>CA3</scene>, <scene name='pdbsite=CA4:Ca Binding Site'>CA4</scene>, <scene name='pdbsite=FEB:Fe Binding Site'>FEB</scene> and <scene name='pdbsite=ZNB:Zn Binding Site'>ZNB</scene>. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1AUI OCA].
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<references/>
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__TOC__
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==Reference==
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</StructureSection>
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Crystal structures of human calcineurin and the human FKBP12-FK506-calcineurin complex., Kissinger CR, Parge HE, Knighton DR, Lewis CT, Pelletier LA, Tempczyk A, Kalish VJ, Tucker KD, Showalter RE, Moomaw EW, et al., Nature. 1995 Dec 7;378(6557):641-4. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=8524402 8524402]
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Phosphoprotein phosphatase]]
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[[Category: Large Structures]]
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[[Category: Protein complex]]
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[[Category: Kissinger CR]]
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[[Category: Kissinger, C.R.]]
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[[Category: Knighton DR]]
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[[Category: Knighton, D.R.]]
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[[Category: Lewis CT]]
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[[Category: Lewis, C.T.]]
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[[Category: Parge HE]]
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[[Category: Parge, H.E.]]
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[[Category: Pelletier LA]]
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[[Category: Pelletier, L.A.]]
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[[Category: Tempczyk A]]
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[[Category: Tempczyk, A.]]
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[[Category: Villafranca JE]]
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[[Category: Villafranca, J.E.]]
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[[Category: CA]]
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[[Category: FE]]
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[[Category: ZN]]
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[[Category: hydrolase]]
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[[Category: immunosuppression]]
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[[Category: phosphatase]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Dec 19 13:19:32 2007''
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Current revision

HUMAN CALCINEURIN HETERODIMER

PDB ID 1aui

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