ADK
Adenosine kinase
Also known as: ADK_HUMAN, AK
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P55263
- Gene
- ADK
- Ensembl
- ENSG00000156110
- Chromosome
- 10
- Canonical length
- 362 aa
- Protein class
- Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Potential drug targets, Predicted intracellular proteins
- Subcellular location
- Nucleoplasm,Plasma membrane,Cytosol
OverviewNCBI Gene
This gene an enzyme which catalyzes the transfer of the gamma-phosphate from ATP to adenosine, thereby serving as a regulator of concentrations of both extracellular adenosine and intracellular adenine nucleotides. Adenosine has widespread effects on the cardiovascular, nervous, respiratory, and immune systems and inhibitors of the enzyme could play an important pharmacological role in increasing intravascular adenosine concentrations and acting as anti-inflammatory agents. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2011]
Canonical amino-acid sequenceUniProt
362 residues, UniProt reviewed canonical sequence.
>P55263|ADK
1 MAAAEEEPKP KKLKVEAPQA LRENILFGMG NPLLDISAVV DKDFLDKYSL KPNDQILAED
61 KHKELFDELV KKFKVEYHAG GSTQNSIKVA QWMIQQPHKA ATFFGCIGID KFGEILKRKA
121 AEAHVDAHYY EQNEQPTGTC AACITGDNRS LIANLAAANC YKKEKHLDLE KNWMLVEKAR
181 VCYIAGFFLT VSPESVLKVA HHASENNRIF TLNLSAPFIS QFYKESLMKV MPYVDILFGN
241 ETEAATFARE QGFETKDIKE IAKKTQALPK MNSKRQRIVI FTQGRDDTIM ATESEVTAFA
301 VLDQDQKEII DTNGAGDAFV GGFLSQLVSD KPLTECIRAG HYAASIIIRR TGCTFPEKPD
361 FHLocalizationUniProt · AlphaFold · HPA
Whether an antibody against ADK 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)
- 0.24
- Highest tissue expression
- 141 nTPM
Expression across tissuesHPA
Tissue
- liver: 141 nTPM
- esophagus: 46 nTPM
- tongue: 44 nTPM
- parathyroid gland: 42 nTPM
- skeletal muscle: 39 nTPM
- thyroid gland: 36 nTPM
Single-cell type
- sertoli cells: 1,311 nCPM
- transitional alveolar cells: 1,165 nCPM
- alveolar cells type 1: 1,116 nCPM
- alveolar cells type 2: 1,072 nCPM
- neutrophil progenitors: 979 nCPM
- b-cells: 929 nCPM
Immune cell
- naive B-cell: 156 nTPM
- memory B-cell: 104 nTPM
- myeloid DC: 83 nTPM
- non-classical monocyte: 81 nTPM
- intermediate monocyte: 66 nTPM
- plasmacytoid DC: 58 nTPM
Brain region
- basal ganglia: 31 nTPM
- pons: 27 nTPM
- white matter: 25 nTPM
- hypothalamus: 24 nTPM
- midbrain: 24 nTPM
- cerebral cortex: 24 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about ADK.
Disease | AllUniProt
Conditions ADK is implicated in, by any mechanism.
- Hypermethioninemia due to adenosine kinase deficiency (HMAKD) MIM:614300
Disease | GeneticClinVar
13 pathogenic / likely-pathogenic of 184 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Adenosine kinase deficiency
- ADK-related disorder
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)
- 0.8
- gnomAD pLI
- 0
- gnomAD missense Z
- 1.5
- DepMap mean gene effect
- -0.06
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- AMP salvage
- dAMP salvage
- GMP salvage
- purine nucleobase metabolic process
- purine ribonucleoside salvage
- ribonucleoside monophosphate biosynthetic process
- dATP biosynthetic process
Molecular functions
- ATP binding
- deoxyadenosine kinase activity
- metal ion binding
- RNA binding
- adenosine kinase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads ADK as an antibody target. Whether an autoantibody or antibody against ADK could matter depends on whether native ADK is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
ADK 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 ADK as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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