Acetylation of cyclin-dependent kinase 5 is mediated by GCN5

Juhyung Lee, Nuri Yun, Chiho Kim, Min Young Song, Kang Sik Park, Young J. Oh

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Cyclin-dependent kinase 5 (CDK5), a member of atypical serine/threonine cyclin-dependent kinase family, plays a crucial role in pathophysiology of neurodegenerative disorders. Its kinase activity and substrate specificity are regulated by several independent pathways including binding with its activator, phosphorylation and S-nitrosylation. In the present study, we report that acetylation of CDK5 comprises an additional posttranslational modification within the cells. Among many candidates, we confirmed that its acetylation is enhanced by GCN5, a member of the GCN5-related N-acetyl-transferase family of histone acetyltransferase. Co-immunoprecipitation assay and fluorescent localization study indicated that GCN5 physically interacts with CDK5 and they are co-localized at the specific nuclear foci. Furthermore, liquid chromatography in conjunction with a mass spectrometry indicated that CDK5 is acetylated at Lys33 residue of ATP binding domain. Considering this lysine site is conserved among a wide range of species and other related cyclin-dependent kinases, therefore, we speculate that acetylation may alter the kinase activity of CDK5 via affecting efficacy of ATP coordination.

Original languageEnglish (US)
Pages (from-to)121-127
Number of pages7
JournalBiochemical and Biophysical Research Communications
Issue number1
StatePublished - Apr 25 2014
Externally publishedYes


  • Acetylation
  • ATP
  • CDK5
  • GCN5
  • K33

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology


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