AK1
Adenylate kinase isoenzyme 1
Also known as: KAD1_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P00568
- Gene
- AK1
- Ensembl
- ENSG00000106992
- Chromosome
- 9
- Canonical length
- 194 aa
- Protein class
- Disease related genes, Enzymes, Human disease related genes, Metabolic proteins, Plasma proteins, Potential drug targets, Predicted intracellular proteins
- Subcellular location
- Cytosol,Annulus
OverviewNCBI Gene
This gene encodes an adenylate kinase enzyme involved in energy metabolism and homeostasis of cellular adenine nucleotide ratios in different intracellular compartments. This gene is highly expressed in skeletal muscle, brain and erythrocytes. Certain mutations in this gene resulting in a functionally inadequate enzyme are associated with a rare genetic disorder causing nonspherocytic hemolytic anemia. Alternative splicing of this gene results in multiple transcript variants encoding different isoforms. This gene shares readthrough transcripts with the upstream ST6GALNAC6 gene. [provided by RefSeq, Jan 2022]
Canonical amino-acid sequenceUniProt
194 residues, UniProt reviewed canonical sequence.
>P00568|AK1
1 MEEKLKKTKI IFVVGGPGSG KGTQCEKIVQ KYGYTHLSTG DLLRSEVSSG SARGKKLSEI
61 MEKGQLVPLE TVLDMLRDAM VAKVNTSKGF LIDGYPREVQ QGEEFERRIG QPTLLLYVDA
121 GPETMTQRLL KRGETSGRVD DNEETIKKRL ETYYKATEPV IAFYEKRGIV RKVNAEGSVD
181 SVFSQVCTHL DALKLocalizationUniProt · AlphaFold · HPA
Whether an antibody against AK1 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)
- 0.26
- Highest tissue expression
- 1,263 nTPM
Expression across tissuesHPA
Tissue
- skeletal muscle: 1,263 nTPM
- tongue: 731 nTPM
- choroid plexus: 523 nTPM
- fallopian tube: 322 nTPM
- heart muscle: 313 nTPM
- amygdala: 105 nTPM
Single-cell type
- epididymal efferent duct ciliated cells: 1,136 nCPM
- ependymal cells: 325 nCPM
- fallopian tube ciliated cells: 198 nCPM
- colonocytes: 106 nCPM
- alveolar cells type 2: 71 nCPM
- late spermatids: 69 nCPM
Immune cell
- plasmacytoid DC: 0.9 nTPM
- neutrophil: 0.4 nTPM
- gdT-cell: 0.3 nTPM
- basophil: 0.2 nTPM
- MAIT T-cell: 0.2 nTPM
- memory CD8 T-cell: 0.2 nTPM
Brain region
- choroid plexus: 184 nTPM
- spinal cord: 99 nTPM
- midbrain: 89 nTPM
- medulla oblongata: 87 nTPM
- white matter: 78 nTPM
- thalamus: 65 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about AK1.
Disease | AllUniProt
Conditions AK1 is implicated in, by any mechanism.
- Anemia, congenital, non-spherocytic hemolytic, 3 (CNSHA3) MIM:612631
Disease | GeneticClinVar
11 pathogenic / likely-pathogenic of 107 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Hemolytic anemia due to adenylate kinase deficiency
- Hepatocellular carcinoma
- Adenylate kinase deficiency
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)
- 0.94
- gnomAD pLI
- 0.03
- gnomAD missense Z
- 0.65
- DepMap mean gene effect
- -0.18
- 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
- ADP biosynthetic process
- AMP metabolic process
- ATP metabolic process
- nucleobase-containing small molecule interconversion
- nucleoside triphosphate biosynthetic process
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads AK1 as an antibody target. Whether an autoantibody or antibody against AK1 could matter depends on whether native AK1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
AK1 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 AK1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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