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| | ==NMR solution structure for the C-terminal domain of Tetrahymena Tcb2 in the absence of calcium== | | ==NMR solution structure for the C-terminal domain of Tetrahymena Tcb2 in the absence of calcium== |
| - | <StructureSection load='2nco' size='340' side='right' caption='[[2nco]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | + | <StructureSection load='2nco' size='340' side='right'caption='[[2nco]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2nco]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2NCO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2NCO FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2nco]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Tetrahymena_thermophila Tetrahymena thermophila]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2NCO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2NCO FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2ncp|2ncp]]</td></tr> | + | </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=2nco FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2nco OCA], [https://pdbe.org/2nco PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2nco RCSB], [https://www.ebi.ac.uk/pdbsum/2nco PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2nco 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=2nco FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2nco OCA], [http://pdbe.org/2nco PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2nco RCSB], [http://www.ebi.ac.uk/pdbsum/2nco PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2nco ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/CB25_TETTH CB25_TETTH]] Expected to play a crucial role in calcium-dependent regulation of ciliary movement. | + | [https://www.uniprot.org/uniprot/CB25_TETTH CB25_TETTH] Expected to play a crucial role in calcium-dependent regulation of ciliary movement. |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Fowler, A]] | + | [[Category: Large Structures]] |
| - | [[Category: Kilpatrick, A M]] | + | [[Category: Tetrahymena thermophila]] |
| - | [[Category: Calcium binding protein]] | + | [[Category: Fowler A]] |
| - | [[Category: Contractility]] | + | [[Category: Kilpatrick AM]] |
| - | [[Category: Cytoskeleton]]
| + | |
| - | [[Category: Ef hand]]
| + | |
| - | [[Category: Helical packing]]
| + | |
| - | [[Category: Metal binding protein]]
| + | |
| - | [[Category: Tcb25]]
| + | |
| Structural highlights
Function
CB25_TETTH Expected to play a crucial role in calcium-dependent regulation of ciliary movement.
Publication Abstract from PubMed
Tcb2 is a calcium-binding protein that localizes to the membrane-associated skeleton of the ciliated protozoan Tetrahymena thermophila with hypothesized roles in ciliary movement, cell cortex signaling, and pronuclear exchange. Tcb2 has also been implicated in a unique calcium-triggered, ATP-independent type of contractility exhibited by filamentous networks isolated from the Tetrahymena cytoskeleton. To gain insight into Tcb2's structure-function relationship and contractile properties, we determined solution NMR structures of its C-terminal domain in the calcium-free and calcium-bound states. The overall architecture is similar to other calcium-binding proteins, with paired EF-hand calcium-binding motifs. Comparison of the two structures reveals that Tcb2-C's calcium-induced conformational transition differs from the prototypical calcium sensor calmodulin, suggesting that the two proteins play distinct functional roles in Tetrahymena and likely have different mechanisms of target recognition. Future studies of the full-length protein and the identification of Tcb2 cellular targets will help establish the molecular basis of Tcb2 function and its unique contractile properties. Proteins 2016. (c) 2016 Wiley Periodicals, Inc.
Solution NMR structures of the C-domain of Tetrahymena cytoskeletal protein Tcb2 reveal distinct calcium-induced structural rearrangements.,Kilpatrick AM, Honts JE, Sleister HM, Fowler CA Proteins. 2016 Aug 2. doi: 10.1002/prot.25111. PMID:27488393[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Kilpatrick AM, Honts JE, Sleister HM, Fowler CA. Solution NMR structures of the C-domain of Tetrahymena cytoskeletal protein Tcb2 reveal distinct calcium-induced structural rearrangements. Proteins. 2016 Aug 2. doi: 10.1002/prot.25111. PMID:27488393 doi:http://dx.doi.org/10.1002/prot.25111
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