Recombinant Human Calcium/calmodulin-dependent protein kinase type II subunit beta (CAMK2B)

Uniprot Id

Q13554

Target Species

Human

Target Name

CAMK2B

Target Full Name

Calcium/calmodulin-dependent protein kinase type II subunit beta

Target Function

Calcium/calmodulin-dependent protein kinase that functions autonomously after Ca(2+)/calmodulin-binding and autophosphorylation, and is involved in dendritic spine and synapse formation, neuronal plasticity and regulation of sarcoplasmic reticulum Ca(2+) transport in skeletal muscle. In neurons, plays an essential structural role in the reorganization of the actin cytoskeleton during plasticity by binding and bundling actin filaments in a kinase-independent manner. This structural function is required for correct targeting of CaMK2A, which acts downstream of NMDAR to promote dendritic spine and synapse formation and maintain synaptic plasticity which enables long-term potentiation (LTP) and hippocampus-dependent learning. In developing hippocampal neurons, promotes arborization of the dendritic tree and in mature neurons, promotes dendritic remodeling. Also regulates the migration of developing neurons. Participates in the modulation of skeletal muscle function in response to exercise. In slow-twitch muscles, is involved in regulation of sarcoplasmic reticulum (SR) Ca(2+) transport and in fast-twitch muscle participates in the control of Ca(2+) release from the SR through phosphorylation of triadin, a ryanodine receptor-coupling factor, and phospholamban (PLN/PLB), an endogenous inhibitor of SERCA2A/ATP2A2.

Target Subcellular Location

Cytoplasm, cytoskeleton. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome. Sarcoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side. Cell junction, synapse. Note=In slow-twitch muscle, evenly distributed between longitudinal SR and junctional SR.

Target Protein Families

Protein kinase superfamily, CAMK Ser/Thr protein kinase family, CaMK subfamily

Target Tissue Specificity

Widely expressed. Expressed in adult and fetal brain. Expression is slightly lower in fetal brain. Expressed in skeletal muscle.

Target Synonyms

Calcium/calmodulin dependent protein kinase (CaM kinase) II beta; Calcium/calmodulin dependent protein kinase II beta; Calcium/calmodulin dependent protein kinase IIB; Calcium/calmodulin dependent protein kinase type II beta chain; calcium/calmodulin-dependent protein kinase II beta; Calcium/calmodulin-dependent protein kinase type II subunit beta; CAM 2; CaM kinase II beta chain; CaM kinase II beta subunit; CaM kinase II subunit beta; CaM-kinase II beta chain; CAM2; CAMK 2; CAMK 2B; CaMK II beta subunit; CaMK II subunit beta; CaMK-II subunit beta; CAMK2; CaMK2 beta; Camk2b; CAMKB; CaMKII beta subunit; CaMKIIB; KCC2B_HUMAN; MGC29528; Proline rich calmodulin dependent protein kinase; proline rich calmodulin-dependent protein kinase

Target Background

The product of this gene belongs to the serine/threonine protein kinase family and to the Ca(2+)/calmodulin-dependent protein kinase subfamily. Calcium signaling is crucial for several aspects of plasticity at glutamatergic synapses. In mammalian cells, the enzyme is composed of four different chains: alpha, beta, gamma, and delta. The product of this gene is a beta chain. It is possible that distinct isoforms of this chain have different cellular localizations and interact differently with calmodulin. Alternative splicing results in multiple transcript variants.