Molecular mechanism for the regulation of human ACC2 through phosphorylation by AMPK

Yong Soon Cho, Jae Il Lee, Dongkyu Shin, Hyun Tae Kim, Ha Yun Jung, Tae Gyu Lee, Lin Woo Kang, Yeh Jin Ahn, Hyun Soo Cho, Yong Seok Heo

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Abstract

Acetyl-CoA carboxylases (ACCs) have been highlighted as therapeutic targets for obesity and diabetes, as they play crucial roles in fatty acid metabolism. ACC activity is regulated through the short-term mechanism of inactivation by reversible phosphorylation. Here, we report the crystal structures of the biotin carboxylase (BC) domain of human ACC2 phosphorylated by AMP-activated protein kinase (AMPK). The phosphorylated Ser222 binds to the putative dimer interface of BC, disrupting polymerization and providing the molecular mechanism of inactivation by AMPK. We also determined the structure of the human BC domain in complex with soraphen A, a macrocyclic polyketide natural product. This structure shows that the compound binds to the binding site of phosphorylated Ser222, implying that its inhibition mechanism is the same as that of phosphorylation by AMPK.

Original languageEnglish
Pages (from-to)187-192
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume391
Issue number1
DOIs
Publication statusPublished - 2010 Jan 1

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All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Cho, Y. S., Lee, J. I., Shin, D., Kim, H. T., Jung, H. Y., Lee, T. G., Kang, L. W., Ahn, Y. J., Cho, H. S., & Heo, Y. S. (2010). Molecular mechanism for the regulation of human ACC2 through phosphorylation by AMPK. Biochemical and Biophysical Research Communications, 391(1), 187-192. https://doi.org/10.1016/j.bbrc.2009.11.029