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

KSR2 (Q6VAB6) - Overview - Molecular Target Synopsis


KSR2, Kinase suppressor of Ras 2
Enzyme Classification
UniProt Q6VAB6

Also Known as KSR2_HUMAN, KSR2

Location-regulated scaffold connecting MEK to RAF. Has very low protein kinase activity and can phosphorylate MAP2K1 at several Ser and Thr residues with very low efficiency (in vitro). Interaction with BRAF enhances KSR2-mediated phosphorylation of MAP2K1 (in vitro). Blocks MAP3K8 kinase activity and MAP3K8-mediated signaling. Acts as a negative regulator of MAP3K3-mediated activation of ERK, JNK and NF-kappa-B pathways, inhibiting MAP3K3-mediated interleukin-8 production. Interacts with MAP2K1, forming a heterodimer that can dimerize to form a heterotetramer. Interacts with MAP3K8, MAPK, RAS and RAF. Interacts with BRAF; this increases the low intrinsic protein kinase activity of KSR2.

Inspect Structure
See all 3D Structures for KSR2

Isoforms / Transcripts (Protein Coding)

Sub-cellular localization

UniProt: KSR2 is active in the following subcellular-locations: cytoplasm, membrane.
GO terms: KSR2 is active in the following subcellular-locations: cytosol, plasma membrane.

GO terms

Gene Copy Number Variation

In COSMIC - Cell Lines Project KSR2 has gain in 1 cell-lines, loss in 0 cell-lines and no signal in 1004 cell-lines. (see details)

Gene Expression

In NCI60, the highest expressing cell lines are:

In Array Express (RNA-seq of 675 commonly used human cancer cell lines), the highest expressing cell lines are: NCI-H187, NCI-H345, DMS 79

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

KSR2 was reported in the following RNAI studies:

Cell - Large Scale Profiling of Kinase Dependencies in Cancer Cell Lines, the highest RNAi cell lines are: VP229, RMGI. (see details)

3D Structures

For KSR2 there are:
2 structures (2 chains) solved
2 are solved in complex with at least one small molecule ligand

(see details)
Molecular Target 3D Synopsis

Screening and Chemistry

KSR2 has been screened with compounds ( bioactivities). (see details)