MAP4K5
Mitogen-activated protein kinase kinase kinase kinase 5
Also known as: GCKR, KHS, KHS1, M4K5_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9Y4K4
- Gene
- MAP4K5
- Ensembl
- ENSG00000012983
- Chromosome
- 14
- Canonical length
- 846 aa
- Protein class
- Enzymes, Predicted intracellular proteins
- Subcellular location
- Plasma membrane,Primary cilium,Cytosol
OverviewNCBI Gene
This gene encodes a member of the serine/threonine protein kinase family, that is highly similar to yeast SPS1/STE20 kinase. Yeast SPS1/STE20 functions near the beginning of the MAP kinase signal cascades that is essential for yeast pheromone response. This kinase was shown to activate Jun kinase in mammalian cells, which suggested a role in stress response. Two alternatively spliced transcript variants encoding the same protein have been described for this gene. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
846 residues, UniProt reviewed canonical sequence.
>Q9Y4K4|MAP4K5
1 MEAPLRPAAD ILRRNPQQDY ELVQRVGSGT YGDVYKARNV HTGELAAVKI IKLEPGDDFS
61 LIQQEIFMVK ECKHCNIVAY FGSYLSREKL WICMEYCGGG SLQDIYHVTG PLSELQIAYV
121 CRETLQGLAY LHTKGKMHRD IKGANILLTD HGDVKLADFG VAAKITATIA KRKSFIGTPY
181 WMAPEVAAVE KNGGYNQLCD IWAVGITAIE LGELQPPMFD LHPMRALFLM SKSNFQPPKL
241 KDKTKWSSTF HNFVKIALTK NPKKRPTAER LLTHTFVAQP GLSRALAVEL LDKVNNPDNH
301 AHYTEADDDD FEPHAIIRHT IRSTNRNARA ERTASEINFD KLQFEPPLRK ETEARDEMGL
361 SSDPNFMLQW NPFVDGANTG KSTSKRAIPP PLPPKPRISS YPEDNFPDEE KASTIKHCPD
421 SESRAPQILR RQSSPSCGPV AETSSIGNGD GISKLMSENT EGSAQAPQLP RKKDKRDFPK
481 PAINGLPPTP KVLMGACFSK VFDGCPLKIN CATSWIHPDT KDQYIIFGTE DGIYTLNLNE
541 LHEATMEQLF PRKCTWLYVI NNTLMSLSEG KTFQLYSHNL IALFEHAKKP GLAAHIQTHR
601 FPDRILPRKF ALTTKIPDTK GCHKCCIVRN PYTGHKYLCG ALQSGIVLLQ WYEPMQKFML
661 IKHFDFPLPS PLNVFEMLVI PEQEYPMVCV AISKGTESNQ VVQFETINLN SASSWFTEIG
721 AGSQQLDSIH VTQLERDTVL VCLDKFVKIV NLQGKLKSSK KLASELSFDF RIESVVCLQD
781 SVLAFWKHGM QGKSFKSDEV TQEISDETRV FRLLGSDRVV VLESRPTENP TAHSNLYILA
841 GHENSYLocalizationUniProt · AlphaFold · HPA
Whether an antibody against MAP4K5 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)
- 0.34
- Highest tissue expression
- 31 nTPM
Expression across tissuesHPA
Tissue
- endometrium: 31 nTPM
- ovary: 28 nTPM
- skin: 28 nTPM
- cervix: 26 nTPM
- smooth muscle: 22 nTPM
- breast: 21 nTPM
Single-cell type
- oligodendrocytes: 907 nCPM
- oligodendrocyte progenitor cells: 456 nCPM
- schwann cells: 404 nCPM
- ocular epithelial cells: 391 nCPM
- platelets: 367 nCPM
- urothelial cells: 361 nCPM
Immune cell
- basophil: 19 nTPM
- eosinophil: 5.5 nTPM
- NK-cell: 2.1 nTPM
- plasmacytoid DC: 1.3 nTPM
- MAIT T-cell: 1.2 nTPM
- memory CD8 T-cell: 1.2 nTPM
Brain region
- white matter: 42 nTPM
- basal ganglia: 26 nTPM
- medulla oblongata: 24 nTPM
- pons: 23 nTPM
- thalamus: 21 nTPM
- midbrain: 21 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)
- 0.28
- gnomAD pLI
- 0.99
- gnomAD missense Z
- 2.06
- DepMap mean gene effect
- 0.03
- DepMap dependency class
- none
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
- ATP binding
- MAP kinase kinase kinase kinase activity
- protein kinase activity
- protein serine kinase activity
- protein serine/threonine kinase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of MAP4K5 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 MAP4K5 as an antibody target. Whether an autoantibody or antibody against MAP4K5 could matter depends on whether native MAP4K5 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
MAP4K5 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 MAP4K5 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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