Seroatlas · Human Serome Atlas

ATP5MC2

ATP synthase F(0) complex subunit C2, mitochondrial

Also known as: AT5G2_HUMAN, ATP5G2

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q06055
Gene
ATP5MC2
Ensembl
ENSG00000135390
Chromosome
12
Canonical length
141 aa
Protein class
Metabolic proteins, Predicted intracellular proteins, Predicted membrane proteins, Transporters

OverviewNCBI Gene

This gene encodes a subunit of mitochondrial ATP synthase. Mitochondrial ATP synthase catalyzes ATP synthesis, utilizing an electrochemical gradient of protons across the inner membrane during oxidative phosphorylation. ATP synthase is composed of two linked multi-subunit complexes: the soluble catalytic core, F1, and the membrane-spanning component, Fo, comprising the proton channel. The catalytic portion of mitochondrial ATP synthase consists of 5 different subunits (alpha, beta, gamma, delta, and epsilon) assembled with a stoichiometry of 3 alpha, 3 beta, and single representatives of the gamma, delta, and epsilon subunits. The proton channel likely has nine subunits (a, b, c, d, e, f, g, F6 and 8). There are three separate genes which encode subunit c of the proton channel and they specify precursors with different import sequences but identical mature proteins. The protein encoded by this gene is one of three precursors of subunit c. This gene has multiple pseudogenes. [provided by RefSeq, Jan 2018]

Canonical amino-acid sequenceUniProt

141 residues, UniProt reviewed canonical sequence.

>Q06055|ATP5MC2
     1  MFACSKFVST PSLVKSTSQL LSRPLSAVVL KRPEILTDES LSSLAVSCPL TSLVSSRSFQ
    61  TSAISRDIDT AAKFIGAGAA TVGVAGSGAG IGTVFGSLII GYARNPSLKQ QLFSYAILGF
   121  ALSEAMGLFC LMVAFLILFA M

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against ATP5MC2 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
2
Mean surface accessibility (rSASA)
0.54
Highest tissue expression
1,358 nTPM

Expression across tissuesHPA

Tissue

  • skeletal muscle: 1,358 nTPM
  • tongue: 1,350 nTPM
  • heart muscle: 950 nTPM
  • choroid plexus: 776 nTPM
  • pancreas: 625 nTPM
  • kidney: 612 nTPM

Single-cell type

  • parietal cells: 1,710 nCPM
  • breast secretory cells: 1,371 nCPM
  • hofbauer cells: 1,313 nCPM
  • kupffer cells: 1,268 nCPM
  • esophageal suprabasal cells: 1,248 nCPM
  • gastric chief cells: 1,218 nCPM

Immune cell

  • total PBMC: 1,567 nTPM
  • myeloid DC: 1,327 nTPM
  • memory B-cell: 1,124 nTPM
  • plasmacytoid DC: 1,026 nTPM
  • classical monocyte: 980 nTPM
  • naive B-cell: 979 nTPM

Brain region

  • white matter: 296 nTPM
  • medulla oblongata: 285 nTPM
  • basal ganglia: 281 nTPM
  • spinal cord: 280 nTPM
  • thalamus: 273 nTPM
  • cerebellum: 262 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)
1.66
gnomAD pLI
0
DepMap mean gene effect
-0.32
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 ATP5MC2 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 ATP5MC2 as an antibody target. Whether an autoantibody or antibody against ATP5MC2 could matter depends on whether native ATP5MC2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

ATP5MC2 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 ATP5MC2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/ATP5MC2. 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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