Protein: Calcium/calmodulin-dependent protein kinase type 1 (EC 2.7.11.17) (CaM kinase I) (CaM-KI) (CaM kinase I alpha) (CaMKI-alpha) (Q91YS8)
Organism: Mus musculus (Mouse)
Function: Calcium/calmodulin-dependent protein kinase that operates in the calcium-triggered CaMKK-CaMK1 signaling cascade and, upon calcium influx, regulates transcription activators activity, cell cycle, hormone production, cell differentiation, actin filament organization and neurite outgrowth. Recognizes the substrate consensus sequence [MVLIF]-x-R-x(2)-[ST]-x(3)-[MVLIF]. Regulates axonal extension and growth cone motility in hippocampal and cerebellar nerve cells. Upon NMDA receptor-mediated Ca(2+) elevation, promotes dendritic growth in hippocampal neurons and is essential in synapses for full long-term potentiation (LTP) and ERK2-dependent translational activation. Downstream of NMDA receptors, promotes the formation of spines and synapses in hippocampal neurons by phosphorylating ARHGEF7/BETAPIX on 'Ser-673', which results in the enhancement of ARHGEF7 activity and activation of RAC1. Promotes neuronal differentiation and neurite outgrowth by activation and phosphorylation of MARK2 on 'Ser-91', 'Ser-92', 'Ser-93' and 'Ser-294'. Promotes nuclear export of HDAC5 and binding to 14-3-3 by phosphorylation of 'Ser-259' and 'Ser-498' in the regulation of muscle cell differentiation. Regulates NUMB-mediated endocytosis by phosphorylation of NUMB on 'Ser-276' and 'Ser-295'. Involved in the regulation of basal and estrogen-stimulated migration of medulloblastoma cells through ARHGEF7/BETAPIX phosphorylation. Is required for proper activation of cyclin-D1/CDK4 complex during G1 progression in diploid fibroblasts. Plays a role in K(+) and ANG2-mediated regulation of the aldosterone synthase (CYP11B2) to produce aldosterone in the adrenal cortex. Phosphorylates EIF4G3/eIF4GII. In vitro phosphorylates CREB1, ATF1, CFTR, MYL9 and SYN1/synapsin I (By similarity).
Subcellular location: Cytoplasm {ECO:0000250}. Nucleus {ECO:0000250}. Note=Predominantly cytoplasmic. {ECO:0000250}.
Sequence: MPGAVEGPRWKQAEDIRDIYDFRDVLGTGAFSEVILAEDKRTQKLVAIKCIAKKALEGKEGSMENEIAVLHKIKHPNIVALDDIYESGGHLYLIMQLVSGGELFDRIVEKGFYTERDASRLIFQVLDAVKYLHDLGIVHRDLKPENLLYYSLDEDSKIMISDFGLSKMEDPGSVLSTACGTPGYVAPEVLAQKPYSKAVDCWSIGVIAYILLCGYPPFYDENDAKLFEQILKAEYEFDSPYWDDISDSAKDFIRHLMEKDPEKRFTCEQALQHPWIAGDTALDKNIHQSVSEQIKKNFAKSKWKQAFNATAVVRHMRKLQLGTSQEGQGQTGSHGELLTPTAGGPAAGCCCRDCCVEPGSELPPAPPPSSRAMD
InterPro domains: - IPR011009: Protein kinase-like domain superfamily (homologous_superfamily) [12-292]
- IPR017441: Protein kinase, ATP binding site (binding_site) [26-54]
- IPR008271: Serine/threonine-protein kinase, active site (active_site) [137-149]
- IPR000719: Protein kinase domain (domain) [20-276]
Interaction partners: - Calmodulin-1
- Calmodulin-like protein 3
- Calmodulin 5
- Calmodulin-4
- Calmodulin-like protein 4
- Neuronal migration protein doublecortin
- Nitric oxide synthase 3
- Cyclic AMP-responsive element-binding protein 1
- Cyclic AMP-dependent transcription factor ATF-2
- Cyclic AMP-dependent transcription factor ATF-1
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0098772 (molecular function regulator activity), GO:0110165 (cellular anatomical entity), GO:0030234 (enzyme regulator activity), GO:0140677 (molecular function activator activity), GO:0005515 (protein binding), GO:0140678 (molecular function inhibitor activity), GO:0060589 (nucleoside-triphosphatase regulator activity), GO:0005085 (guanyl-nucleotide exchange factor activity), GO:0030695 (GTPase regulator activity)
Biological Process (BP): GO:0008150 (biological process), GO:0050789 (regulation of biological process), GO:0065007 (biological regulation), GO:0065008 (regulation of biological quality), GO:0050794 (regulation of cellular process), GO:0051128 (regulation of cellular component organization), GO:0050803 (regulation of synapse structure or activity), GO:0050807 (regulation of synapse organization)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0032991 (protein-containing complex), GO:0005829 (cytosol), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0005737 (cytoplasm), GO:0030054 (cell junction), GO:0043229 (intracellular organelle), GO:0045202 (synapse), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0005634 (nucleus)