Tbio VRK1 Serine/threonine-protein kinase VRK1

Protein Summary

Description

Serine/threonine kinase involved in Golgi disassembly during the cell cycle: following phosphorylation by PLK3 during mitosis, required to induce Golgi fragmentation. Acts by mediating phosphorylation of downstream target protein. Phosphorylates 'Thr-18' of p53/TP53 and may thereby prevent the interaction between p53/TP53 and MDM2. Phosphorylates casein and histone H3. Phosphorylates BANF1: disrupts its ability to bind DNA, reduces its binding to LEM domain-containing proteins and causes its relocalization from the nucleus to the cytoplasm. Phosphorylates ATF2 which activates its transcriptional activity. This gene encodes a member of the vaccinia-related kinase (VRK) family of serine/threonine protein kinases. This gene is widely expressed in human tissues and has increased expression in actively dividing cells, such as those in testis, thymus, fetal liver, and carcinomas. Its protein localizes to the nucleus and has been shown to promote the stability and nuclear accumulation of a transcriptionally active p53 molecule and, in vitro, to phosphorylate Thr18 of p53 and reduce p53 ubiquitination. This gene, therefore, may regulate cell proliferation. This protein also phosphorylates histone, casein, and the transcription factors ATF2 (activating transcription factor 2) and c-JUN. [provided by RefSeq, Jul 2008]

Uniprot Accession IDs

• Q99986
• Q3SYL2

Gene Name

• VRK1

Ensembl ID

• ENST00000216639
• ENSP00000216639
• ENSG00000100749

Symbol

• PCH1
• PCH1A

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
molecular function	0.99
interacting protein	0.97
kinase perturbation	0.91
virus perturbation	0.88
transcription factor binding site profile	0.8

Protein Classes

PANTHER Classes

Protein / Transferase / Kinase / Protein Kinase / Non-receptor Serine/threonine Protein Kinase / Serine/threonine-protein Kinase Vrk1

DTO Classes

Protein / Kinase / Protein Kinase / Ck1 Group / Vrk Family / Serine/threonine-protein Kinase Vrk1

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 93.77   (req: < 5)

Gene RIFs: 66   (req: <= 3)

Antibodies: 232   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 93.77   (req: >= 5)

Gene RIFs: 66   (req: > 3)

Antibodies: 232   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 17

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0