Aliases for CAMKK2 Gene
External Ids for CAMKK2 Gene
Previous GeneCards Identifiers for CAMKK2 Gene
The product of this gene belongs to the Serine/Threonine protein kinase family, and to the Ca(2+)/calmodulin-dependent protein kinase subfamily. The major isoform of this gene plays a role in the calcium/calmodulin-dependent (CaM) kinase cascade by phosphorylating the downstream kinases CaMK1 and CaMK4. Protein products of this gene also phosphorylate AMP-activated protein kinase (AMPK). This gene has its strongest expression in the brain and influences signalling cascades involved with learning and memory, neuronal differentiation and migration, neurite outgrowth, and synapse formation. Alternative splicing results in multiple transcript variants encoding distinct isoforms. The identified isoforms differ in their ability to undergo autophosphorylation and to phosphorylate downstream kinases. [provided by RefSeq, Jul 2012]
GeneCards Summary for CAMKK2 Gene
CAMKK2 (Calcium/Calmodulin-Dependent Protein Kinase Kinase 2, Beta) is a Protein Coding gene. Among its related pathways are CREB Pathway and Glucose / Energy Metabolism. GO annotations related to this gene include calcium ion binding and protein tyrosine kinase activity. An important paralog of this gene is STK11.
UniProtKB/Swiss-Prot for CAMKK2 Gene
Calcium/calmodulin-dependent protein kinase belonging to a proposed calcium-triggered signaling cascade involved in a number of cellular processes. Isoform 1, isoform 2 and isoform 3 phosphorylate CAMK1 and CAMK4. Isoform 3 phosphorylates CAMK1D. Isoform 4, isoform 5 and isoform 6 lacking part of the calmodulin-binding domain are inactive. Efficiently phosphorylates 5-AMP-activated protein kinase (AMPK) trimer, including that consisting of PRKAA1, PRKAB1 and PRKAG1. This phosphorylation is stimulated in response to Ca(2+) signals (By similarity). Seems to be involved in hippocampal activation of CREB1 (By similarity). May play a role in neurite growth. Isoform 3 may promote neurite elongation, while isoform 1 may promoter neurite branching.
Calmodulin-dependent kinases (CaMK) are a family of serine/threonine kinases that mediate many of the second messenger effects of Ca2+. At basal Ca2+ levels, CaMKs are maintained in a dormant state through autoinhibition. Increases in Ca2+ levels allows calmodulin to relieve this autoinhibition and activate the kinase activity. There are two main classes of CaMKs; mulitfunctional CaMKs (CaMKK, CaMKI, CaMKII and CaMKIV) which have multiple downstream targets and substrate-specific CaMKs (CaMKIII) which have only one known downstream target. All CaMKs, with the exception of CaMKII, exist as monomers and most are expressed ubiquitously. Some subtypes display specific distributions, for example, CaMKIVbeta is expressed exclusively in cerebellar granule cells. CaMKs have numerous cellular functions and they influence processes as diverse as gene transcription, cell survival, apoptosis, cytoskeletal re-organization and learning and memory.