Seroatlas · Human Serome Atlas

IPMK

Inositol polyphosphate multikinase

Also known as: IPMK_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q8NFU5
Gene
IPMK
Ensembl
ENSG00000151151
Chromosome
10
Canonical length
416 aa
Protein class
Enzymes, Metabolic proteins, Predicted intracellular proteins
Subcellular location
Nucleoplasm,Basal body

OverviewNCBI Gene

This gene encodes a member of the inositol phosphokinase family. The encoded protein has 3-kinase, 5-kinase and 6-kinase activities on phosphorylated inositol substrates. The encoded protein plays an important role in the biosynthesis of inositol 1,3,4,5,6-pentakisphosphate, and has a preferred 5-kinase activity. This gene may play a role in nuclear mRNA export. Pseudogenes of this gene are located on the long arm of chromosome 13 and the short arm of chromosome 19. [provided by RefSeq, Dec 2010]

Canonical amino-acid sequenceUniProt

416 residues, UniProt reviewed canonical sequence.

>Q8NFU5|IPMK
     1  MATEPPSPLR VEAPGPPEMR TSPAIESTPE GTPQPAGGRL RFLNGCVPLS HQVAGHMYGK
    61  DKVGILQHPD GTVLKQLQPP PRGPRELEFY NMVYAADCFD GVLLELRKYL PKYYGIWSPP
   121  TAPNDLYLKL EDVTHKFNKP CIMDVKIGQK SYDPFASSEK IQQQVSKYPL MEEIGFLVLG
   181  MRVYHVHSDS YETENQHYGR SLTKETIKDG VSRFFHNGYC LRKDAVAASI QKIEKILQWF
   241  ENQKQLNFYA SSLLFVYEGS SQPTTTKLND RTLAEKFLSK GQLSDTEVLE YNNNFHVLSS
   301  TANGKIESSV GKSLSKMYAR HRKIYTKKHH SQTSLKVENL EQDNGWKSMS QEHLNGNVLS
   361  QLEKVFYHLP TGCQEIAEVE VRMIDFAHVF PSNTIDEGYV YGLKHLISVL RSILDN

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against IPMK 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)
0.39
Highest tissue expression
17 nTPM

Expression across tissuesHPA

Tissue

  • liver: 17 nTPM
  • parathyroid gland: 11 nTPM
  • small intestine: 9.8 nTPM
  • placenta: 8.2 nTPM
  • duodenum: 7.5 nTPM
  • colon: 6.6 nTPM

Single-cell type

  • neutrophils: 916 nCPM
  • neutrophil progenitors: 221 nCPM
  • monocytes: 174 nCPM
  • kupffer cells: 135 nCPM
  • macrophages: 123 nCPM
  • monocyte progenitors: 118 nCPM

Immune cell

  • neutrophil: 3 nTPM
  • basophil: 1.7 nTPM
  • eosinophil: 1.6 nTPM
  • non-classical monocyte: 1 nTPM
  • classical monocyte: 0.7 nTPM
  • intermediate monocyte: 0.7 nTPM

Brain region

  • cerebellum: 8.6 nTPM
  • medulla oblongata: 7.8 nTPM
  • midbrain: 7.8 nTPM
  • thalamus: 7.6 nTPM
  • cerebral cortex: 7 nTPM
  • hypothalamus: 7 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)
0.33
gnomAD pLI
0.96
gnomAD missense Z
0.77
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

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads IPMK as an antibody target. Whether an autoantibody or antibody against IPMK could matter depends on whether native IPMK is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

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

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