2f86
From Proteopedia
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|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2f86 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2f86 OCA], [http://www.ebi.ac.uk/pdbsum/2f86 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2f86 RCSB]</span> | ||
}} | }} | ||
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[[Category: Kuriyan, J.]] | [[Category: Kuriyan, J.]] | ||
[[Category: Rosenberg, O S.]] | [[Category: Rosenberg, O S.]] | ||
| - | [[Category: unc-43 | + | [[Category: oligomerization domain]] |
| + | [[Category: unc-43]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 02:59:11 2008'' |
Revision as of 23:59, 30 March 2008
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| , resolution 2.64Å | |||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
The Association Domain of C. elegans CaMKII
Overview
Ca2+/calmodulin activated protein kinase II (CaMKII) is an oligomeric protein kinase with a unique holoenyzme architecture. The subunits of CaMKII are bound together into the holoenzyme by the association domain, a C-terminal region of approximately 140 residues in the CaMKII polypeptide. Single particle analyses of electron micrographs have suggested previously that the holoenyzme forms a dodecamer that contains two stacked 6-fold symmetric rings. In contrast, a recent crystal structure of the isolated association domain of mouse CaMKIIalpha has revealed a tetradecameric assembly with two stacked 7-fold symmetric rings. In this study, we have determined the crystal structure of the Caenorhabditis elegans CaMKII association domain and it too forms a tetradecamer. We also show by electron microscopy that in its fully assembled form the CaMKII holoenzyme is a dodecamer but without the kinase domains, either from expression of the isolated association domain in bacteria or following their removal by proteolysis, the association domains form a tetradecamer. We speculate that the holoenzyme is held in its 6-fold symmetric state by the interactions of the N-terminal approximately 1-335 residues and that the removal of this region allows the association domain to convert into a more stable 7-fold symmetric form.
About this Structure
2F86 is a Single protein structure of sequence from Caenorhabditis elegans. Full crystallographic information is available from OCA.
Reference
Oligomerization states of the association domain and the holoenyzme of Ca2+/CaM kinase II., Rosenberg OS, Deindl S, Comolli LR, Hoelz A, Downing KH, Nairn AC, Kuriyan J, FEBS J. 2006 Feb;273(4):682-94. PMID:16441656
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