PKN1_HUMAN

Source: PM19886704
PM23856902
Marked as 'Membrane associated protein'
Confidence: low (only semi-automatic identification from reviews) Search PubMed for
(RBC AND this entry)
Gene names: PKN1 , PAK1, PKN, PRK1, PRKCL1
Protein names and data: PKN1_HUMAN , Serine/threonine-protein kinase N1; 2.7.11.13 , Protease-activated kinase 1; PAK-1; Protein kinase C-like 1; Protein kinase C-like PKN; Protein kinase PKN-alpha; Protein-kinase C-related kinase 1; Serine-threonine protein kinase N Lenght: 942 a.a.
Mass: 103932 Da
fasta formatted sequence
Function: PKC-related serine/threonine-protein kinase involved in various processes such as regulation of the intermediate filaments of the actin cytoskeleton, cell migration, tumor cell invasion and transcription regulation. Regulates the cytoskeletal network by phosphorylating proteins such as VIM and neurofilament proteins NEFH, NEFL and NEFM, leading to inhibit their polymerization. Phosphorylates 'Ser-575', 'Ser-637' and 'Ser-669' of MAPT/Tau, lowering its ability to bind to microtubules, resulting in disruption of tubulin assembly. Acts as a key coactivator of androgen receptor (ANDR)-dependent transcription, by being recruited to ANDR target genes and specifically mediating phosphorylation of 'Thr-11' of histone H3 (H3T11ph), a specific tag for epigenetic transcriptional activation that promotes demethylation of histone H3 'Lys-9' (H3K9me) by KDM4C/JMJD2C. Phosphorylates HDAC5, HDAC7 and HDAC9, leading to impair their import in the nucleus. Phosphorylates 'Thr-38' of PPP1R14A, 'Ser- 159', 'Ser-163' and 'Ser-170' of MARCKS, and GFAP. Able to phosphorylate RPS6 in vitro.
Catalytic activity: ATP + a protein = ADP + a phosphoprotein.
Cellular location: Cytoplasm. Nucleus. Endosome. Cell membrane; Peripheral membrane protein. Cleavage furrow. Midbody. Note=Associates with chromatin in a ligand-dependent manner. Localization to endosomes is mediated via its interaction with RHOB. Association to the cell membrane is dependent on Ser-374 phosphorylation. Accumulates during telophase at the cleavage furrow and finally concentrates around the midbody in cytokinesis.
Tissue specificity: Found ubiquitously. Expressed in heart, brain, placenta, lung, skeletal muscle, kidney and pancreas. Expressed in numerous tumor cell lines, especially in breast tumor cells.

Genetic variants

Database cross-references

UniProt: Q16512
Ensembl: ENST00000242783
Ensembl: ENST00000342216
MIM: 601032
neXtProt: NX_Q16512
Antibodypedia: Q16512 (may not find the protein thus also not any antibody)
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