Seroatlas · Human Serome Atlas

ATP11B

Phospholipid-transporting ATPase IF

Also known as: AT11B_HUMAN, ATPIF, ATPIR, KIAA0956

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

Protein identityUniProt · HPA

UniProt accession
Q9Y2G3
Gene
ATP11B
Ensembl
ENSG00000058063
Chromosome
3
Canonical length
1177 aa
Protein class
Enzymes, Predicted membrane proteins, Transporters
Subcellular location
Centriolar satellite,Cytosol

OverviewNCBI Gene

P-type ATPases, such as ATP11B, are phosphorylated in their intermediate state and drive uphill transport of ions across membranes. Several subfamilies of P-type ATPases have been identified. One subfamily transports heavy metal ions, such as Cu(2+) or Cd(2+). Another subfamily transports non-heavy metal ions, such as H(+), Na(+), K(+), or Ca(+). A third subfamily transports amphipaths, such as phosphatidylserine.[supplied by OMIM, Feb 2005]

Canonical amino-acid sequenceUniProt

1177 residues, UniProt reviewed canonical sequence.

>Q9Y2G3|ATP11B
     1  MWRWIRQQLG FDPPHQSDTR TIYVANRFPQ NGLYTPQKFI DNRIISSKYT VWNFVPKNLF
    61  EQFRRVANFY FLIIFLVQLM IDTPTSPVTS GLPLFFVITV TAIKQGYEDW LRHNSDNEVN
   121  GAPVYVVRSG GLVKTRSKNI RVGDIVRIAK DEIFPADLVL LSSDRLDGSC HVTTASLDGE
   181  TNLKTHVAVP ETALLQTVAN LDTLVAVIEC QQPEADLYRF MGRMIITQQM EEIVRPLGPE
   241  SLLLRGARLK NTKEIFGVAV YTGMETKMAL NYKSKSQKRS AVEKSMNTFL IIYLVILISE
   301  AVISTILKYT WQAEEKWDEP WYNQKTEHQR NSSKILRFIS DFLAFLVLYN FIIPISLYVT
   361  VEMQKFLGSF FIGWDLDLYH EESDQKAQVN TSDLNEELGQ VEYVFTDKTG TLTENEMQFR
   421  ECSINGMKYQ EINGRLVPEG PTPDSSEGNL SYLSSLSHLN NLSHLTTSSS FRTSPENETE
   481  LIKEHDLFFK AVSLCHTVQI SNVQTDCTGD GPWQSNLAPS QLEYYASSPD EKALVEAAAR
   541  IGIVFIGNSE ETMEVKTLGK LERYKLLHIL EFDSDRRRMS VIVQAPSGEK LLFAKGAESS
   601  ILPKCIGGEI EKTRIHVDEF ALKGLRTLCI AYRKFTSKEY EEIDKRIFEA RTALQQREEK
   661  LAAVFQFIEK DLILLGATAV EDRLQDKVRE TIEALRMAGI KVWVLTGDKH ETAVSVSLSC
   721  GHFHRTMNIL ELINQKSDSE CAEQLRQLAR RITEDHVIQH GLVVDGTSLS LALREHEKLF
   781  MEVCRNCSAV LCCRMAPLQK AKVIRLIKIS PEKPITLAVG DGANDVSMIQ EAHVGIGIMG
   841  KEGRQAARNS DYAIARFKFL SKLLFVHGHF YYIRIATLVQ YFFYKNVCFI TPQFLYQFYC
   901  LFSQQTLYDS VYLTLYNICF TSLPILIYSL LEQHVDPHVL QNKPTLYRDI SKNRLLSIKT
   961  FLYWTILGFS HAFIFFFGSY LLIGKDTSLL GNGQMFGNWT FGTLVFTVMV ITVTVKMALE
  1021  THFWTWINHL VTWGSIIFYF VFSLFYGGIL WPFLGSQNMY FVFIQLLSSG SAWFAIILMV
  1081  VTCLFLDIIK KVFDRHLHPT STEKAQLTET NAGIKCLDSM CCFPEGEAAC ASVGRMLERV
  1141  IGRCSPTHIS RSWSASDPFY TNDRSILTLS TMDSSTC

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against ATP11B 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
10
Mean surface accessibility (rSASA)
0.27
Highest tissue expression
67 nTPM

Expression across tissuesHPA

Tissue

  • bone marrow: 67 nTPM
  • stomach: 48 nTPM
  • esophagus: 43 nTPM
  • thymus: 42 nTPM
  • testis: 30 nTPM
  • retina: 29 nTPM

Single-cell type

  • neutrophils: 2,239 nCPM
  • neutrophil progenitors: 1,086 nCPM
  • esophageal apical cells: 689 nCPM
  • rod photoreceptor cells: 326 nCPM
  • urothelial cells: 322 nCPM
  • foveolar cells: 302 nCPM

Immune cell

  • basophil: 5.5 nTPM
  • eosinophil: 4.3 nTPM
  • neutrophil: 3.8 nTPM
  • plasmacytoid DC: 2.4 nTPM
  • memory B-cell: 2.1 nTPM
  • naive CD8 T-cell: 1.8 nTPM

Brain region

  • cerebellum: 51 nTPM
  • white matter: 50 nTPM
  • choroid plexus: 48 nTPM
  • cerebral cortex: 35 nTPM
  • medulla oblongata: 35 nTPM
  • pons: 34 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)
0.41
gnomAD pLI
0
gnomAD missense Z
1.85
DepMap mean gene effect
-0.14
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 11% 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 ATP11B 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 ATP11B as an antibody target. Whether an autoantibody or antibody against ATP11B could matter depends on whether native ATP11B is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

ATP11B 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 ATP11B as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/ATP11B. 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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