Seroatlas · Human Serome Atlas

MAP4K3

Mitogen-activated protein kinase kinase kinase kinase 3

Also known as: GLK, M4K3_HUMAN, MAPKKKK3, RAB8IPL1

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

Protein identityUniProt · HPA

UniProt accession
Q8IVH8
Gene
MAP4K3
Ensembl
ENSG00000011566
Chromosome
2
Canonical length
894 aa
Protein class
Cancer-related genes, Enzymes, Plasma proteins, Predicted intracellular proteins
Subcellular location
Centriolar satellite

OverviewNCBI Gene

This gene encodes a member of the mitogen-activated protein kinase kinase kinase kinase family. The encoded protein activates key effectors in cell signalling, among them c-Jun. Alternatively spliced transcripts encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Jul 2012]

Canonical amino-acid sequenceUniProt

894 residues, UniProt reviewed canonical sequence.

>Q8IVH8|MAP4K3
     1  MNPGFDLSRR NPQEDFELIQ RIGSGTYGDV YKARNVNTGE LAAIKVIKLE PGEDFAVVQQ
    61  EIIMMKDCKH PNIVAYFGSY LRRDKLWICM EFCGGGSLQD IYHVTGPLSE LQIAYVSRET
   121  LQGLYYLHSK GKMHRDIKGA NILLTDNGHV KLADFGVSAQ ITATIAKRKS FIGTPYWMAP
   181  EVAAVERKGG YNQLCDLWAV GITAIELAEL QPPMFDLHPM RALFLMTKSN FQPPKLKDKM
   241  KWSNSFHHFV KMALTKNPKK RPTAEKLLQH PFVTQHLTRS LAIELLDKVN NPDHSTYHDF
   301  DDDDPEPLVA VPHRIHSTSR NVREEKTRSE ITFGQVKFDP PLRKETEPHH ELPDSDGFLD
   361  SSEEIYYTAR SNLDLQLEYG QGHQGGYFLG ANKSLLKSVE EELHQRGHVA HLEDDEGDDD
   421  ESKHSTLKAK IPPPLPPKPK SIFIPQEMHS TEDENQGTIK RCPMSGSPAK PSQVPPRPPP
   481  PRLPPHKPVA LGNGMSSFQL NGERDGSLCQ QQNEHRGTNL SRKEKKDVPK PISNGLPPTP
   541  KVHMGACFSK VFNGCPLKIH CASSWINPDT RDQYLIFGAE EGIYTLNLNE LHETSMEQLF
   601  PRRCTWLYVM NNCLLSISGK ASQLYSHNLP GLFDYARQMQ KLPVAIPAHK LPDRILPRKF
   661  SVSAKIPETK WCQKCCVVRN PYTGHKYLCG ALQTSIVLLE WVEPMQKFML IKHIDFPIPC
   721  PLRMFEMLVV PEQEYPLVCV GVSRGRDFNQ VVRFETVNPN STSSWFTESD TPQTNVTHVT
   781  QLERDTILVC LDCCIKIVNL QGRLKSSRKL SSELTFDFQI ESIVCLQDSV LAFWKHGMQG
   841  RSFRSNEVTQ EISDSTRIFR LLGSDRVVVL ESRPTDNPTA NSNLYILAGH ENSY

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against MAP4K3 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)
0.37
Highest tissue expression
30 nTPM

Expression across tissuesHPA

Tissue

  • skeletal muscle: 30 nTPM
  • retina: 26 nTPM
  • placenta: 26 nTPM
  • stomach: 25 nTPM
  • parathyroid gland: 24 nTPM
  • kidney: 23 nTPM

Single-cell type

  • endometrial glandular cells: 1,313 nCPM
  • myonuclei: 1,183 nCPM
  • urothelial cells: 634 nCPM
  • renal collecting duct intercalated cells: 617 nCPM
  • renal connecting tubule cells: 612 nCPM
  • distal convoluted tubule cells: 498 nCPM

Immune cell

  • basophil: 0.7 nTPM
  • non-classical monocyte: 0.4 nTPM
  • gdT-cell: 0.2 nTPM
  • intermediate monocyte: 0.2 nTPM
  • memory CD4 T-cell: 0.2 nTPM
  • naive CD4 T-cell: 0.2 nTPM

Brain region

  • cerebellum: 47 nTPM
  • choroid plexus: 34 nTPM
  • hippocampal formation: 31 nTPM
  • white matter: 31 nTPM
  • cerebral cortex: 29 nTPM
  • basal ganglia: 26 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)
0.37
gnomAD pLI
0.11
gnomAD missense Z
1.45
DepMap mean gene effect
0.11
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 6% 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 MAP4K3 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 MAP4K3 as an antibody target. Whether an autoantibody or antibody against MAP4K3 could matter depends on whether native MAP4K3 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

MAP4K3 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 MAP4K3 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/MAP4K3. 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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