CAMK2A

Calcium/calmodulin-dependent protein kinase II alpha

PDB rendering based on 1hkx.

Available structures

Ortholog search: PDBe, RCSB

List of PDB id codes
2VZ6, 3SOA

Identifiers

Symbols

CAMK2A ; CAMKA

External IDs

OMIM: 114078 MGI: 88256 HomoloGene: 56577 ChEMBL: 4147 GeneCards: CAMK2A Gene

EC number

2.7.11.17

Gene ontology
Molecular function	• protein serine/threonine kinase activity • calmodulin-dependent protein kinase activity • protein binding • calmodulin binding • ATP binding • kinase activity • glutamate receptor binding • protein homodimerization activity
Cellular component	• nucleus • nucleoplasm • mitochondrion • cytosol • plasma membrane • cell junction • endocytic vesicle membrane • presynaptic membrane • neuronal postsynaptic density
Biological process	• G1/S transition of mitotic cell cycle • response to ischemia • protein phosphorylation • calcium ion transport • synaptic transmission • positive regulation of cardiac muscle cell apoptotic process • peptidyl-serine phosphorylation • cytokine-mediated signaling pathway • cellular response to heat • angiotensin-activated signaling pathway • protein autophosphorylation • regulation of neurotransmitter secretion • regulation of neuronal synaptic plasticity • positive regulation of NF-kappaB transcription factor activity • positive regulation of calcium ion transport • interferon-gamma-mediated signaling pathway • regulation of cellular response to heat • regulation of mitochondrial membrane permeability involved in apoptotic process
Sources: Amigo / QuickGO

Orthologs

Species

Human

Mouse

815

RefSeq (mRNA)

RefSeq (protein)

Location (UCSC)

Chr 5:
150.22 – 150.29 Mb

Chr 18:
60.93 – 60.99 Mb

PubMed search

Calcium/calmodulin-dependent protein kinase type II alpha chain (CAMKIIα) is an enzyme that in humans is encoded by the CAMK2A gene.^[1]^[2]

Function

The product of this gene belongs to the Serine/Threonine protein kinases family, and to the Ca(2+)/calmodulin-dependent protein kinases subfamily. Calcium signaling is crucial for several aspects of plasticity at glutamatergic synapses. This enzyme is composed of four different chains: alpha, beta, gamma, and delta. The alpha chain encoded by this gene is required for hippocampal long-term potentiation (LTP) and spatial learning. In addition to its calcium-calmodulin (CaM)-dependent activity, this protein can undergo autophosphorylation, resulting in CaM-independent activity. Two transcript variants encoding distinct isoforms have been identified for this gene.^[3]

Interactions

CAMK2A has been shown to interact with:

References

↑ Nagase T, Ishikawa K, Suyama M, Kikuno R, Hirosawa M, Miyajima N, Tanaka A, Kotani H, Nomura N, Ohara O (Jul 1999). "Prediction of the coding sequences of unidentified human genes. XIII. The complete sequences of 100 new cDNA clones from brain which code for large proteins in vitro". DNA Res 6 (1): 63–70. doi:10.1093/dnares/6.1.63. PMID 10231032.
↑ Lin CR, Kapiloff MS, Durgerian S, Tatemoto K, Russo AF, Hanson P, Schulman H, Rosenfeld MG (Sep 1987). "Molecular cloning of a brain-specific calcium/calmodulin-dependent protein kinase". Proc Natl Acad Sci U S A 84 (16): 5962–6. doi:10.1073/pnas.84.16.5962. PMC 298983. PMID 3475713.
↑ "Entrez Gene: CAMK2A calcium/calmodulin-dependent protein kinase (CaM kinase) II alpha".
↑ Walikonis RS, Oguni A, Khorosheva EM, Jeng CJ, Asuncion FJ, Kennedy MB (Jan 2001). "Densin-180 forms a ternary complex with the (alpha)-subunit of Ca2+/calmodulin-dependent protein kinase II and (alpha)-actinin". J. Neurosci. 21 (2): 423–33. PMID 11160423.
↑ Dhavan R, Greer PL, Morabito MA, Orlando LR, Tsai LH (Sep 2002). "The cyclin-dependent kinase 5 activators p35 and p39 interact with the alpha-subunit of Ca2+/calmodulin-dependent protein kinase II and alpha-actinin-1 in a calcium-dependent manner". J. Neurosci. 22 (18): 7879–91. PMID 12223541.
↑ Gardoni F, Mauceri D, Fiorentini C, Bellone C, Missale C, Cattabeni F, Di Luca M (Nov 2003). "CaMKII-dependent phosphorylation regulates SAP97/NR2A interaction". J. Biol. Chem. 278 (45): 44745–52. doi:10.1074/jbc.M303576200. PMID 12933808.

Soderling TR (2000). "CaM-kinases: modulators of synaptic plasticity.". Curr. Opin. Neurobiol. 10 (3): 375–80. doi:10.1016/S0959-4388(00)00090-8. PMID 10851169.
Hook SS, Means AR (2001). "Ca(2+)/CaM-dependent kinases: from activation to function.". Annu. Rev. Pharmacol. Toxicol. 41 (1): 471–505. doi:10.1146/annurev.pharmtox.41.1.471. PMID 11264466.
Yamamoto H (2002). "[Molecular mechanisms of the intracellular localizations of Ca2+/calmodulin-dependent protein kinase II isoforms, and their physiological functions]". Tanpakushitsu Kakusan Koso 47 (3): 241–7. PMID 11889801.
Countaway JL, Nairn AC, Davis RJ (1992). "Mechanism of desensitization of the epidermal growth factor receptor protein-tyrosine kinase.". J. Biol. Chem. 267 (2): 1129–40. PMID 1309762.
Wegner M, Cao Z, Rosenfeld MG (1992). "Calcium-regulated phosphorylation within the leucine zipper of C/EBP beta.". Science 256 (5055): 370–3. doi:10.1126/science.256.5055.370. PMID 1314426.
Omary MB, Baxter GT, Chou CF, Riopel CL, Lin WY, Strulovici B (1992). "PKC epsilon-related kinase associates with and phosphorylates cytokeratin 8 and 18.". J. Cell Biol. 117 (3): 583–93. doi:10.1083/jcb.117.3.583. PMC 2289443. PMID 1374067.
Bredt DS, Ferris CD, Snyder SH (1992). "Nitric oxide synthase regulatory sites. Phosphorylation by cyclic AMP-dependent protein kinase, protein kinase C, and calcium/calmodulin protein kinase; identification of flavin and calmodulin binding sites.". J. Biol. Chem. 267 (16): 10976–81. PMID 1375933.
Tokui T, Yamauchi T, Yano T, Nishi Y, Kusagawa M, Yatani R, Inagaki M (1990). "Ca2(+)-calmodulin-dependent protein kinase II phosphorylates various types of non-epithelial intermediate filament proteins.". Biochem. Biophys. Res. Commun. 169 (3): 896–904. doi:10.1016/0006-291X(90)91977-Z. PMID 2114109.
Inagaki M, Gonda Y, Nishizawa K, Kitamura S, Sato C, Ando S, Tanabe K, Kikuchi K, Tsuiki S, Nishi Y (1990). "Phosphorylation sites linked to glial filament disassembly in vitro locate in a non-alpha-helical head domain.". J. Biol. Chem. 265 (8): 4722–9. PMID 2155236.
Ohta Y, Ohba T, Miyamoto E (1990). "Ca2+/calmodulin-dependent protein kinase II: localization in the interphase nucleus and the mitotic apparatus of mammalian cells.". Proc. Natl. Acad. Sci. U.S.A. 87 (14): 5341–5. doi:10.1073/pnas.87.14.5341. PMC 54319. PMID 2164678.
Lee RH, Brown BM, Lolley RN (1990). "Protein kinase A phosphorylates retinal phosducin on serine 73 in situ.". J. Biol. Chem. 265 (26): 15860–6. PMID 2394752.
Ku NO, Omary MB (1994). "Identification of the major physiologic phosphorylation site of human keratin 18: potential kinases and a role in filament reorganization.". J. Cell Biol. 127 (1): 161–71. doi:10.1083/jcb.127.1.161. PMC 2120194. PMID 7523419.
Drewes G, Trinczek B, Illenberger S, Biernat J, Schmitt-Ulms G, Meyer HE, Mandelkow EM, Mandelkow E (1995). "Microtubule-associated protein/microtubule affinity-regulating kinase (p110mark). A novel protein kinase that regulates tau-microtubule interactions and dynamic instability by phosphorylation at the Alzheimer-specific site serine 262.". J. Biol. Chem. 270 (13): 7679–88. doi:10.1074/jbc.270.13.7679. PMID 7706316.
Tsujimura K, Tanaka J, Ando S, Matsuoka Y, Kusubata M, Sugiura H, Yamauchi T, Inagaki M (1995). "Identification of phosphorylation sites on glial fibrillary acidic protein for cdc2 kinase and Ca(2+)-calmodulin-dependent protein kinase II.". J. Biochem. 116 (2): 426–34. PMID 7822264.
Toyofuku T, Curotto Kurzydlowski K, Narayanan N, MacLennan DH (1994). "Identification of Ser38 as the site in cardiac sarcoplasmic reticulum Ca(2+)-ATPase that is phosphorylated by Ca2+/calmodulin-dependent protein kinase.". J. Biol. Chem. 269 (42): 26492–6. PMID 7929371.
Rivera VM, Miranti CK, Misra RP, Ginty DD, Chen RH, Blenis J, Greenberg ME (1993). "A growth factor-induced kinase phosphorylates the serum response factor at a site that regulates its DNA-binding activity.". Mol. Cell. Biol. 13 (10): 6260–73. PMC 364685. PMID 8413226.
Omkumar RV, Kiely MJ, Rosenstein AJ, Min KT, Kennedy MB (1997). "Identification of a phosphorylation site for calcium/calmodulindependent protein kinase II in the NR2B subunit of the N-methyl-D-aspartate receptor.". J. Biol. Chem. 271 (49): 31670–8. doi:10.1074/jbc.271.49.31670. PMID 8940188.
Rotenberg A, Mayford M, Hawkins RD, Kandel ER, Muller RU (1997). "Mice expressing activated CaMKII lack low frequency LTP and do not form stable place cells in the CA1 region of the hippocampus.". Cell 87 (7): 1351–61. doi:10.1016/S0092-8674(00)81829-2. PMID 8980240.
Paudel HK (1997). "The regulatory Ser262 of microtubule-associated protein tau is phosphorylated by phosphorylase kinase.". J. Biol. Chem. 272 (3): 1777–85. doi:10.1074/jbc.272.3.1777. PMID 8999860.

PDB gallery

1hkx: CRYSTAL STRUCTURE OF CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE

Kinases: Serine/threonine-specific protein kinases (EC 2.7.11-12)

Serine/threonine-specific protein kinases (EC 2.7.11.1-EC 2.7.11.20)

Non-specific serine/threonine protein kinases (EC 2.7.11.1)	LATS1 LATS2 MAST1 MAST2 STK38 STK38L CIT ROCK1 SGK SGK2 SGK3 Protein kinase B AKT1 AKT2 AKT3 Ataxia telangiectasia mutated Mammalian target of rapamycin EIF-2 kinases PKR HRI EIF2AK3 EIF2AK4 Wee1 WEE1

Pyruvate dehydrogenase kinase (EC 2.7.11.2)	PDK1 PDK2 PDK3

Dephospho-(reductase kinase) kinase (EC 2.7.11.3)	AMP-activated protein kinase α PRKAA1 PRKAA2 β PRKAB1 PRKAB2 γ PRKAG1 PRKAG2 PRKAG3

(3-methyl-2-oxobutanoate dehydrogenase (acetyl-transferring)) (EC 2.7.11.4)	BCKDK BCKDHA BCKDHB

(isocitrate dehydrogenase (NADP+)) kinase (EC 2.7.11.5)	IDH2 IDH3A IDH3B IDH3G

(tyrosine 3-monooxygenase) kinase (EC 2.7.11.6)	STK4

Myosin-heavy-chain kinase (EC 2.7.11.7)	Aurora kinase Aurora A kinase Aurora B kinase

Fas-activated serine/threonine kinase (EC 2.7.11.8)	FASTK STK10

Goodpasture-antigen-binding protein kinase (EC 2.7.11.9)	-

IκB kinase (EC 2.7.11.10)	CHUK IKK2 TBK1 IKBKE IKBKG IKBKAP

cAMP-dependent protein kinase (EC 2.7.11.11)	Protein kinase A PRKACG PRKACB PRKACA PRKY

cGMP-dependent protein kinase (EC 2.7.11.12)	Protein kinase G PRKG1

Protein kinase C (EC 2.7.11.13)	Protein kinase C Protein kinase Cζ PKC alpha PRKCB1 PRKCD PRKCE PRKCH PRKCG PRKCI PRKCQ Protein kinase N1 PKN2 PKN3

Rhodopsin kinase (EC 2.7.11.14)	Rhodopsin kinase

Beta adrenergic receptor kinase (EC 2.7.11.15)	Beta adrenergic receptor kinase Beta adrenergic receptor kinase-2

G-protein coupled receptor kinases (EC 2.7.11.16)	GRK4 GRK5 GRK6

Ca2+/calmodulin-dependent (EC 2.7.11.17)	BRSK2 CAMK1 CAMK2A CAMK2B CAMK2D CAMK2G CAMK4 MLCK CASK CHEK1 CHEK2 DAPK1 DAPK2 DAPK3 STK11 MAPKAPK2 MAPKAPK3 MAPKAPK5 MARK1 MARK2 MARK3 MARK4 MELK MKNK1 MKNK2 NUAK1 NUAK2 OBSCN PASK PHKG1 PHKG2 PIM1 PIM2 PKD1 PRKD2 PRKD3 PSKH1 SNF1LK2 KIAA0999 STK40 SNF1LK SNRK SPEG TSSK2 Kalirin TRIB1 TRIB2 TRIB3 TRIO Titin DCLK1

Myosin light-chain kinase (EC 2.7.11.18)	MYLK MYLK2 MYLK3 MYLK4

Phosphorylase kinase (EC 2.7.11.19)	PHKA1 PHKA2 PHKB PHKG1 PHKG2

Elongation factor 2 kinase (EC 2.7.11.20)	EEF2K STK19

Polo kinase (EC 2.7.11.21)	PLK1 PLK2 PLK3 PLK4

Serine/threonine-specific protein kinases (EC 2.7.11.21-EC 2.7.11.30)

Polo kinase (EC 2.7.11.21)	PLK1 PLK2 PLK3 PLK4

Cyclin-dependent kinase (EC 2.7.11.22)	CDK1 CDK2 CDKL2 CDK3 CDK4 CDK5 CDKL5 CDK6 CDK7 CDK8 CDK9 CDK10 CDK12 CDC2L5 PCTK1 PCTK2 PCTK3 PFTK1 CDC2L1

(RNA-polymerase)-subunit kinase (EC 2.7.11.23)	RPS6KA5 RPS6KA4 P70S6 kinase P70-S6 Kinase 1 RPS6KB2 RPS6KA2 RPS6KA3 RPS6KA1 RPS6KC1

Mitogen-activated protein kinase (EC 2.7.11.24)	Extracellular signal-regulated MAPK1 MAPK3 MAPK4 MAPK6 MAPK7 MAPK12 MAPK15 C-Jun N-terminal MAPK8 MAPK9 MAPK10 P38 mitogen-activated protein MAPK11 MAPK13 MAPK14

MAP3K (EC 2.7.11.25)	MAP kinase kinase kinases MAP3K1 MAP3K2 MAP3K3 MAP3K4 MAP3K5 MAP3K6 MAP3K7 MAP3K8 RAFs ARAF BRAF KSR1 KSR2 MLKs MAP3K12 MAP3K13 MAP3K9 MAP3K10 MAP3K11 MAP3K7 ZAK CDC7 MAP3K14

Tau-protein kinase (EC 2.7.11.26)	TPK1 TTK GSK-3

(acetyl-CoA carboxylase) kinase (EC 2.7.11.27)	-

Tropomyosin kinase (EC 2.7.11.28)	-

Low-density-lipoprotein receptor kinase (EC 2.7.11.29)	-

Receptor protein serine/threonine kinase (EC 2.7.11.30)	Bone morphogenetic protein receptors BMPR1 BMPR1A BMPR1B BMPR2 ACVR1 ACVR1B ACVR1C ACVR2A ACVR2B ACVRL1 Anti-Müllerian hormone receptor

Dual-specificity kinases (EC 2.7.12)

MAP2K	MAP2K1 MAP2K2 MAP2K3 MAP2K4 MAP2K5 MAP2K6 MAP2K7

Proteins: enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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CAMK2A

Function

Interactions

References

Further reading