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- _5 wasQuotedFrom 16543730 provenance.
- _5 value "glycogen synthase kinase GSK3 which itself is a target of protein kinase B (PKB) and the serum and glucocorticoid inducible kinase SGK1. Phosphorylation of GSK3 by PKB or SGK1 inhibits GSK3 activity an the present study explored whether mineralocorticoid excess had any effect on the phosphorylation status of the a and beta isoforms of GSK3. Western blotting using an antibody specific for the PKB/SGK1 consensus phosphorylation site in GSK3a/beta (serine 21 and 9 respectively) revealed an increase in GSK3a/beta phosphorylation in human embryonic kidney 293 (HEK293) cells overexpressing wild type SGK1, constitutively active SGK1, but not catalytically inactive SGK1. The effect of SGK1 was mimicked by PKB and SGK3." provenance.