Biology:PPM1F

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A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example

Protein phosphatase 1F is an enzyme that in humans is encoded by the PPM1F gene.[1][2][3]

The protein encoded by this gene is a member of the PP2C family of Ser/Thr protein phosphatases. PP2C family members are known to be negative regulators of cell stress response pathways. This phosphatase can interact with Rho guanine nucleotide exchange factors (PIX), and thus block the effects of p21-activated kinase 1 (PAK), a protein kinase mediating biological effects downstream of Rho GTPases. Calcium/calmodulin-dependent protein kinase II gamma (CAMK2G/CAMK-II) is found to be one of the substrates of this phosphatase. The overexpression of this phosphatase or CAMK2G has been shown to mediate caspase-dependent apoptosis. An alternatively spliced transcript variant has been identified, but its full-length nature has not been determined.[3]

References

  1. "The p21-activated kinase PAK is negatively regulated by POPX1 and POPX2, a pair of serine/threonine phosphatases of the PP2C family". Curr Biol 12 (4): 317–21. Feb 2002. doi:10.1016/S0960-9822(02)00652-8. PMID 11864573. 
  2. "The Caenorhabditis elegans sex-determining protein FEM-2 and its human homologue, hFEM-2, are Ca2+/calmodulin-dependent protein kinase phosphatases that promote apoptosis". J Biol Chem 276 (47): 44193–202. Nov 2001. doi:10.1074/jbc.M105880200. PMID 11559703. 
  3. 3.0 3.1 "Entrez Gene: PPM1F protein phosphatase 1F (PP2C domain containing)". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=9647. 

Further reading