CAMKK2
Calcium/calmodulin-dependent protein kinase kinase 2
Also known as: CAMKK, CAMKKB, KIAA0787, KKCC2_HUMAN, MGC15254
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q96RR4
- Gene
- CAMKK2
- Ensembl
- ENSG00000110931
- Chromosome
- 12
- Canonical length
- 588 aa
- Protein class
- Enzymes, Predicted intracellular proteins, Predicted membrane proteins
- Subcellular location
- Cytosol
OverviewNCBI 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]
Canonical amino-acid sequenceUniProt
588 residues, UniProt reviewed canonical sequence.
>Q96RR4|CAMKK2
1 MSSCVSSQPS SNRAAPQDEL GGRGSSSSES QKPCEALRGL SSLSIHLGME SFIVVTECEP
61 GCAVDLGLAR DRPLEADGQE VPLDTSGSQA RPHLSGRKLS LQERSQGGLA AGGSLDMNGR
121 CICPSLPYSP VSSPQSSPRL PRRPTVESHH VSITGMQDCV QLNQYTLKDE IGKGSYGVVK
181 LAYNENDNTY YAMKVLSKKK LIRQAGFPRR PPPRGTRPAP GGCIQPRGPI EQVYQEIAIL
241 KKLDHPNVVK LVEVLDDPNE DHLYMVFELV NQGPVMEVPT LKPLSEDQAR FYFQDLIKGI
301 EYLHYQKIIH RDIKPSNLLV GEDGHIKIAD FGVSNEFKGS DALLSNTVGT PAFMAPESLS
361 ETRKIFSGKA LDVWAMGVTL YCFVFGQCPF MDERIMCLHS KIKSQALEFP DQPDIAEDLK
421 DLITRMLDKN PESRIVVPEI KLHPWVTRHG AEPLPSEDEN CTLVEVTEEE VENSVKHIPS
481 LATVILVKTM IRKRSFGNPF EGSRREERSL SAPGNLLTKK PTRECESLSE LKEARQRRQP
541 PGHRPAPRGG GGSALVRGSP CVESCWAPAP GSPARMHPLR PEEAMEPELocalizationUniProt · AlphaFold · HPA
Whether an antibody against CAMKK2 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.46
- Highest tissue expression
- 324 nTPM
Expression across tissuesHPA
Tissue
- cerebellum: 324 nTPM
- cerebral cortex: 111 nTPM
- basal ganglia: 56 nTPM
- amygdala: 53 nTPM
- spleen: 37 nTPM
- hippocampal formation: 30 nTPM
Single-cell type
- neutrophils: 716 nCPM
- neutrophil progenitors: 250 nCPM
- late spermatids: 161 nCPM
- monocytes: 114 nCPM
- brain excitatory neurons: 113 nCPM
- lymphatic endothelial cells: 79 nCPM
Immune cell
- eosinophil: 62 nTPM
- intermediate monocyte: 42 nTPM
- non-classical monocyte: 40 nTPM
- neutrophil: 39 nTPM
- classical monocyte: 33 nTPM
- myeloid DC: 16 nTPM
Brain region
- cerebellum: 280 nTPM
- cerebral cortex: 134 nTPM
- basal ganglia: 114 nTPM
- white matter: 84 nTPM
- amygdala: 80 nTPM
- hippocampal formation: 60 nTPM
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.47
- gnomAD pLI
- 0.09
- gnomAD missense Z
- 1.59
- DepMap mean gene effect
- -0.19
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- calcium-mediated signaling
- CAMKK-AMPK signaling cascade
- cellular response to reactive oxygen species
- MAPK cascade
- positive regulation of autophagy of mitochondrion
- positive regulation of DNA-templated transcription
- protein autophosphorylation
- protein phosphorylation
- regulation of protein kinase activity
Molecular functions
- ATP binding
- calcium ion binding
- calcium/calmodulin-dependent protein kinase activity
- calmodulin binding
- protein serine kinase activity
- protein serine/threonine kinase activity
- protein tyrosine kinase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of CAMKK2 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads CAMKK2 as an antibody target. Whether an autoantibody or antibody against CAMKK2 could matter depends on whether native CAMKK2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
CAMKK2 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label CAMKK2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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