Casein kinase 2 is the major enzyme in brain that phosphorylates Ser129 of human alpha-synuclein: Implication for alpha-synucleinopathies - PubMed (original) (raw)

. 2007 Oct 2;581(24):4711-7.

doi: 10.1016/j.febslet.2007.08.067. Epub 2007 Sep 6.

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• PMID: 17868672
• DOI: 10.1016/j.febslet.2007.08.067

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Casein kinase 2 is the major enzyme in brain that phosphorylates Ser129 of human alpha-synuclein: Implication for alpha-synucleinopathies

Aasami Ishii et al. FEBS Lett. 2007.

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Abstract

In Lewy body diseases and multiple system atrophy, alpha-synuclein is hyperphosphorylated at Ser129, suggesting a role in pathogenesis. Here, we report purification of the protein kinase in rat brain that phosphorylates Ser129 and its identification as casein kinase-2 (CK2). We show that most of the activity can be inhibited by heparin, an inhibitor of CK2. Phosphorylated Ser129 was detected in primary cultured neurons and inhibited by CK2 inhibitors. In some cases of Lewy body disease, CK2-like immunoreactivity was recovered in the sarkosyl-insoluble fraction, which was enriched in phosphorylated alpha-synuclein. Taken together, these findings suggest that CK2 may be involved in the hyperphosphorylation of alpha-synuclein in alpha-synucleinopathies.

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