3SOA

Full-length human CaMKII

Summary for 3SOA

• Entry DOI: 10.2210/pdb3soa/pdb
• Descriptor: Calcium/calmodulin-dependent protein kinase type II subunit alpha with a beta 7 linker, 4-[(2,4-dichloro-5-methoxyphenyl)amino]-6-methoxy-7-[3-(4-methylpiperazin-1-yl)propoxy]quinoline-3-carbonitrile (2 entities in total)
• Functional Keywords: kinase, protein kinase, phosphorylation, calcium/calmodulin, cytosolic, transferase-transferase inhibitor complex, transferase/transferase inhibitor
• Biological source: Homo sapiens (human)
• Cellular location: Cell junction, synapse, presynaptic cell membrane (By similarity): Q9UQM7
• Total number of polymer chains: 1
• Total formula weight: 51176.45

Authors

Chao, L.H.,Kuriyan, J. (deposition date: 2011-06-30, release date: 2011-08-31, Last modification date: 2023-09-13)

Primary citation

Chao, L.H.,Stratton, M.M.,Lee, I.H.,Rosenberg, O.S.,Levitz, J.,Mandell, D.J.,Kortemme, T.,Groves, J.T.,Schulman, H.,Kuriyan, J.
A Mechanism for Tunable Autoinhibition in the Structure of a Human Ca(2+)/Calmodulin- Dependent Kinase II Holoenzyme.
Cell(Cambridge,Mass.), 146:732-745, 2011

PubMed Abstract: Calcium/calmodulin-dependent kinase II (CaMKII) forms a highly conserved dodecameric assembly that is sensitive to the frequency of calcium pulse trains. Neither the structure of the dodecameric assembly nor how it regulates CaMKII are known. We present the crystal structure of an autoinhibited full-length human CaMKII holoenzyme, revealing an unexpected compact arrangement of kinase domains docked against a central hub, with the calmodulin-binding sites completely inaccessible. We show that this compact docking is important for the autoinhibition of the kinase domains and for setting the calcium response of the holoenzyme. Comparison of CaMKII isoforms, which differ in the length of the linker between the kinase domain and the hub, demonstrates that these interactions can be strengthened or weakened by changes in linker length. This equilibrium between autoinhibited states provides a simple mechanism for tuning the calcium response without changes in either the hub or the kinase domains.

PubMed: 21884935
DOI: 10.1016/j.cell.2011.07.038

Experimental method

X-RAY DIFFRACTION (3.5501 Å)