ATPAF2
ATP synthase mitochondrial F1 complex assembly factor 2
Also known as: ATP12, Atp12p, ATPF2_HUMAN, LP3663, MGC29736
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q8N5M1
- Gene
- ATPAF2
- Ensembl
- ENSG00000171953
- Chromosome
- 17
- Canonical length
- 289 aa
- Protein class
- Disease related genes, Human disease related genes, Predicted intracellular proteins
- Subcellular location
- Cytosol
OverviewNCBI Gene
This gene encodes an assembly factor for the F(1) component of the mitochondrial ATP synthase. This protein binds specifically to the F1 alpha subunit and is thought to prevent this subunit from forming nonproductive homooligomers during enzyme assembly. This gene is located within the Smith-Magenis syndrome region on chromosome 17. An alternatively spliced transcript variant has been described, but its biological validity has not been determined. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
289 residues, UniProt reviewed canonical sequence.
>Q8N5M1|ATPAF2
1 MWRSCLRLRD GGRRLLNRPA GGPSASMSPG PTIPSPARAY APPTERKRFY QNVSITQGEG
61 GFEINLDHRK LKTPQAKLFT VPSEALAIAV ATEWDSQQDT IKYYTMHLTT LCNTSLDNPT
121 QRNKDQLIRA AVKFLDTDTI CYRVEEPETL VELQRNEWDP IIEWAEKRYG VEISSSTSIM
181 GPSIPAKTRE VLVSHLASYN TWALQGIEFV AAQLKSMVLT LGLIDLRLTV EQAVLLSRLE
241 EEYQIQKWGN IEWAHDYELQ ELRARTAAGT LFIHLCSEST TVKHKLLKELocalizationUniProt · AlphaFold · HPA
Whether an antibody against ATPAF2 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
- Other membrane
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.35
- Highest tissue expression
- 26 nTPM
Expression across tissuesHPA
Tissue
- tongue: 26 nTPM
- parathyroid gland: 25 nTPM
- skeletal muscle: 23 nTPM
- heart muscle: 22 nTPM
- liver: 19 nTPM
- choroid plexus: 18 nTPM
Single-cell type
- early spermatids: 82 nCPM
- adrenal medulla cells: 64 nCPM
- late spermatids: 59 nCPM
- hofbauer cells: 54 nCPM
- esophageal apical cells: 51 nCPM
- cone photoreceptor cells: 50 nCPM
Immune cell
- myeloid DC: 49 nTPM
- plasmacytoid DC: 42 nTPM
- classical monocyte: 42 nTPM
- intermediate monocyte: 29 nTPM
- memory B-cell: 28 nTPM
- non-classical monocyte: 23 nTPM
Brain region
- hypothalamus: 13 nTPM
- cerebral cortex: 12 nTPM
- choroid plexus: 11 nTPM
- pons: 11 nTPM
- cerebellum: 11 nTPM
- midbrain: 11 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about ATPAF2.
Disease | AllUniProt
Conditions ATPAF2 is implicated in, by any mechanism.
- Mitochondrial complex V deficiency, nuclear type 1 (MC5DN1) MIM:604273
Disease | GeneticClinVar
3 pathogenic / likely-pathogenic of 245 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Mitochondrial complex V (ATP synthase) deficiency, nuclear type 1
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)
- 1.44
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.69
- DepMap mean gene effect
- -0.01
- 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
- mitochondrial proton-transporting ATP synthase complex assembly
- proton-transporting ATP synthase complex assembly
Cellular components
Protein domainsUniProt · Pfam · InterPro
- ATP12, ATP synthase F1-assembly protein
- ATP12 orthogonal Bundle domain superfamily
- ATP12, ATP synthase F1-assembly protein, N-terminal
- ATP12 chaperone protein
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of ATPAF2 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 ATPAF2 as an antibody target. Whether an autoantibody or antibody against ATPAF2 could matter depends on whether native ATPAF2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
ATPAF2 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 ATPAF2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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