Molecular Target Synopsis
Domains and Structures
Drugs and Clinical Candidates
Ligand Efficiency Plot
Family Cladogram
Interaction Network
Gene Expression
Gene Copy Number Variation
Germline Genetics

MAPK4 (P31152) - Overview - Molecular Target Synopsis


MAPK4, Mitogen-activated protein kinase 4
Enzyme Classification
UniProt P31152

Also Known as MK04_HUMAN, MAPK4, ERK4, PRKM4

Atypical MAPK protein. Phosphorylates microtubule-associated protein 2 (MAP2) and MAPKAPK5. The precise role of the complex formed with MAPKAPK5 is still unclear, but the complex follows a complex set of phosphorylation events: upon interaction with atypical MAPKAPK5, ERK4/MAPK4 is phosphorylated at Ser-186 and then mediates phosphorylation and activation of MAPKAPK5, which in turn phosphorylates ERK4/MAPK4. May promote entry in the cell cycle. Homodimer. Heterodimer with ERK3/MAPK6. Interacts with (via FRIEDE motif) MAPKAPK5.

Isoforms / Transcripts (Protein Coding)

Sub-cellular localization

UniProt: MAPK4 is active in the following subcellular-locations: cytoplasm, nucleus.
GO terms: MAPK4 is active in the following subcellular-locations: cytoplasm, cytosol, nucleoplasm, nucleus.

GO terms

Gene Copy Number Variation

In COSMIC - Cell Lines Project MAPK4 has gain in 2 cell-lines, loss in 17 cell-lines and no signal in 986 cell-lines. (see details)

Gene Expression

In NCI60, the highest expressing cell lines are: KM12, 786_0, CAKI_1

In Array Express (RNA-seq of 675 commonly used human cancer cell lines), the highest expressing cell lines are: MS751, ChaGo-K-1, EKVX

In Array Express (RNA-seq of long poly adenylated RNA and long non poly adenylated RNA from ENCODE cell lines), the highest expressing cell lines are: SK-N-SH, NHLF, HSMM

(see details)

RNA Interference

MAPK4 was reported in the following RNAI studies:

Cell - Large Scale Profiling of Kinase Dependencies in Cancer Cell Lines, the highest RNAi cell lines are: LM7, SAOS2. (see details)

3D Structures

At greater than 50% identity similarity to MAPK4 there are:
1 structures (2 chains) solved
0 are solved in complex with at least one small molecule ligand

(see details)
Molecular Target 3D Synopsis

Screening and Chemistry

MAPK4 has been screened with 97 compounds (136 bioactivities). (see details)