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

SRPK2 (P78362) - Overview - Molecular Target Synopsis


SRPK2, SRSF protein kinase 2
Enzyme Classification
UniProt P78362

Also Known as SRPK2_HUMAN, SRPK2

Serine/arginine-rich protein-specific kinase which specifically phosphorylates its substrates at serine residues located in regions rich in arginine/serine dipeptides, known as RS domains and is involved in the phosphorylation of SR splicing factors and the regulation of splicing. Promotes neuronal apoptosis by up-regulating cyclin-D1 (CCND1) expression. This is done by the phosphorylation of SRSF2, leading to the suppression of p53/TP53 phosphorylation thereby relieving the repressive effect of p53/TP53 on cyclin-D1 (CCND1) expression. Phosphorylates ACIN1, and redistributes it from the nuclear speckles to the nucleoplasm, resulting in cyclin A1 but not cyclin A2 up-regulation. Plays an essential role in spliceosomal B complex formation via the phosphorylation of DDX23/PRP28. Can mediate hepatitis B virus (HBV) core protein phosphorylation. Plays a negative role in the regulation of HBV replication through a mechanism not involving the phosphorylation of the core protein but by reducing the packaging efficiency of the pregenomic RNA (pgRNA) without affecting the formation of the viral core particles. Interacts with PKB/AKT1 in a phosphorylation-dependent manner. The phosphorylated form (by PKB/AKT1) interacts with YWHAB and YWHAE. Interaction with YWHAB suppresses its cleavage by caspases and inhibits the release of its N-terminal pro-apoptotic fragment. Interacts with SFN. Associates with U4/U6-U5 tri-small nuclear ribonucleoproteins (U4/U6-U5 tri-snRNPs).

Inspect Structure
See all 3D Structures for SRPK2

Isoforms / Transcripts (Protein Coding)

Sub-cellular localization

UniProt: SRPK2 is active in the following subcellular-locations: cytoplasm, nucleus.
GO terms: SRPK2 is active in the following subcellular-locations: cytoplasm, cytosol, nucleolus, nucleoplasm, nucleus.

GO terms

Gene Copy Number Variation

In COSMIC - Cell Lines Project SRPK2 has gain in 7 cell-lines, loss in 1 cell-lines and no signal in 997 cell-lines. (see details)

Gene Expression

In NCI60, the highest expressing cell lines are: MOLT_4, MALME_3M, SK_MEL_5

In Array Express (RNA-seq of 675 commonly used human cancer cell lines), the highest expressing cell lines are: Hs 746T, LP-1, A3/KAW

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, MCF-7

(see details)

RNA Interference

SRPK2 was reported in the following RNAI studies:

Cell - Large Scale Profiling of Kinase Dependencies in Cancer Cell Lines, the highest RNAi cell lines are: OVAS, AC295. (see details)

3D Structures

For SRPK2 there are:
2 structures (5 chains) solved
2 are solved in complex with at least one small molecule ligand

(see details)
Molecular Target 3D Synopsis

Screening and Chemistry

SRPK2 has been screened with 296 compounds (508 bioactivities), 10 compounds have bioactivities that show binding affinity of <= 500nM (18 bioactivities). (see details)