Abstract
Nuclear Dbf2-related kinase 2 (NDR2) is a highly conserved kinase that belongs to the NDR/LATS serine-threonine kinase family. NDR2 is involved in many cellular processes as a kinase or a scaffolding protein. As a known kinase, NDR2 requires self-phosphorylation and trans-phosphorylation to become fully active. However, beside phosphorylation, little is known about other posttranslational modifications of NDR2. In this study, we found that NDR2 can be specially acetylated at K463 in cells. In addition, SIRT1 acts as the major deacetylase for NDR2, while p300 and CBP function as specific acetyltransferases for NDR2. Interestingly, in SIRT1 deficient cells HDAC6 and HDAC1/2 can deacetylate NDR2, which provides a novel insight in deacetylation regulation. Our results demonstrate that NDR2 is a reversible acetylated kinase regulated by SIRT1 and p300/CBP.
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