The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Phosphorylation of CPI17 and myosin binding subunit of type 1 protein phosphatase by p21-activated kinase.

CPI17 and myosin binding subunit of type 1 protein phosphatase (MBS) are the regulators of myosin light chain phosphatase (MLCP). The function of both regulators is controlled by phosphorylation. The phosphorylation of CPI17 at Thr38 significantly enhances the inhibitory activity of CPI17 and the phosphorylation at Thr641 of MBS decreases the MLCP activity. Here, we found that p21-activated protein kinase ( PAK) phosphorylates both CPI17 at Thr38 and MBS at Thr641. For CPI17, PAK specifically phosphorylated at Thr38, since the mutation of Thr38 to Ala completely abolished the phosphorylation. On the other hand, PAK phosphorylated Thr641 but not Thr799 of MBS, the site phosphorylated by Rho kinase. Because PAK phosphorylates MBS more than 1 mol/mol, it is anticipated that PAK also phosphorylates other sites in addition to Thr641. CPI17 phosphorylation induced by PAK significantly enhanced the inhibitory activity of CPI17. On the other hand, the phosphorylation of MBS by PAK also decreased the MLCP activity. These results raise the possibility that the PAK pathway plays a role in MLCP regulation.[1]

References

  1. Phosphorylation of CPI17 and myosin binding subunit of type 1 protein phosphatase by p21-activated kinase. Takizawa, N., Koga, Y., Ikebe, M. Biochem. Biophys. Res. Commun. (2002) [Pubmed]
 
WikiGenes - Universities