Seroatlas · Human Serome Atlas

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 PEEAMEPE

LocalizationUniProt · 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

Molecular functions

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.

Canonical record: https://seroatlas.com/gene/CAMKK2. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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