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| | ==Crystal structure of Cep120 C2C domain== | | ==Crystal structure of Cep120 C2C domain== |
| - | <StructureSection load='6flk' size='340' side='right' caption='[[6flk]], [[Resolution|resolution]] 1.60Å' scene=''> | + | <StructureSection load='6flk' size='340' side='right'caption='[[6flk]], [[Resolution|resolution]] 1.60Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6flk]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6FLK OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6FLK FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6flk]] 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=6FLK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6FLK FirstGlance]. <br> |
| - | </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=6flk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6flk OCA], [http://pdbe.org/6flk PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6flk RCSB], [http://www.ebi.ac.uk/pdbsum/6flk PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6flk ProSAT]</span></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]] 1.6Å</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=6flk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6flk OCA], [https://pdbe.org/6flk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6flk RCSB], [https://www.ebi.ac.uk/pdbsum/6flk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6flk ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/CE120_HUMAN CE120_HUMAN]] Plays a role in the microtubule-dependent coupling of the nucleus and the centrosome. Involved in the processes that regulate centrosome-mediated interkinetic nuclear migration (INM) of neural progenitors and for proper positioning of neurons during brain development. Also implicated in the migration and selfrenewal of neural progenitors. May play a role in centriole duplication during mitosis (By similarity). | + | [https://www.uniprot.org/uniprot/CE120_HUMAN CE120_HUMAN] Plays a role in the microtubule-dependent coupling of the nucleus and the centrosome. Involved in the processes that regulate centrosome-mediated interkinetic nuclear migration (INM) of neural progenitors and for proper positioning of neurons during brain development. Also implicated in the migration and selfrenewal of neural progenitors. May play a role in centriole duplication during mitosis (By similarity). |
| | <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: Gerard, S F]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Olieric, N]] | + | [[Category: Large Structures]] |
| - | [[Category: Sharma, A]] | + | [[Category: Gerard SF]] |
| - | [[Category: Steinmetz, M O]] | + | [[Category: Olieric N]] |
| - | [[Category: C2 domain]] | + | [[Category: Sharma A]] |
| - | [[Category: Centriole]] | + | [[Category: Steinmetz MO]] |
| - | [[Category: Cep120]]
| + | |
| - | [[Category: Microtubule]]
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| - | [[Category: Structural protein]]
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| Structural highlights
Function
CE120_HUMAN Plays a role in the microtubule-dependent coupling of the nucleus and the centrosome. Involved in the processes that regulate centrosome-mediated interkinetic nuclear migration (INM) of neural progenitors and for proper positioning of neurons during brain development. Also implicated in the migration and selfrenewal of neural progenitors. May play a role in centriole duplication during mitosis (By similarity).
Publication Abstract from PubMed
Centrioles are microtubule-based structures that play essential roles in cell division and cilia biogenesis. Cep120 is an important protein for correct centriole formation and mutations in the Cep120 gene cause severe human diseases like Joubert syndrome and complex ciliopathies. Here, we show that Cep120 contains three consecutive C2 domains that are followed by a coiled-coil dimerization domain. Surprisingly, unlike the classical C2 domains, all three Cep120 C2 domains lack calcium- and phospholipid-binding activities. However, biophysical and biochemical assays revealed that the N-terminal Cep120 C2 domain (C2A) binds to both tubulin and microtubules, and promotes microtubule formation. Structural analyses coupled with mutagenesis identified a highly conserved, positively charged residue patch on the surface of Cep120 C2A, which mediates the interaction with tubulin and microtubules. Together, our results establish Cep120 C2A as a unique microtubule-binding domain. They further provide insights into the molecular mechanism of Cep120 during centriole biogenesis.
Cep120 promotes microtubule formation through a unique tubulin binding C2 domain.,Sharma A, Gerard SF, Olieric N, Steinmetz MO J Struct Biol. 2018 Feb 1. pii: S1047-8477(18)30024-8. doi:, 10.1016/j.jsb.2018.01.009. PMID:29398280[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Sharma A, Gerard SF, Olieric N, Steinmetz MO. Cep120 promotes microtubule formation through a unique tubulin binding C2 domain. J Struct Biol. 2018 Feb 1. pii: S1047-8477(18)30024-8. doi:, 10.1016/j.jsb.2018.01.009. PMID:29398280 doi:http://dx.doi.org/10.1016/j.jsb.2018.01.009
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