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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Key function for the Ubc13 E2 ubiquitin-conjugating enzyme in immune receptor signaling.

The Ubc13 E2 ubiquitin-conjugating enzyme is key in the process of 'tagging' target proteins with lysine 63-linked polyubiquitin chains, which are essential for the transmission of immune receptor signals culminating in activation of the transcription factor NF-kappaB. Here we demonstrate that conditional ablation of Ubc13 resulted in defective B cell development and in impaired B cell and macrophage activation. In response to all tested stimuli except tumor necrosis factor, Ubc13-deficient cells showed almost normal NF-kappaB activation but considerably impaired activation of mitogen-activated protein kinase. Ubc13- induced activation of mitogen-activated protein kinase required, at least in part, ubiquitination of the adaptor protein IKKgamma. These results show that Ubc13 is key in the mammalian immune response.[1]

References

  1. Key function for the Ubc13 E2 ubiquitin-conjugating enzyme in immune receptor signaling. Yamamoto, M., Okamoto, T., Takeda, K., Sato, S., Sanjo, H., Uematsu, S., Saitoh, T., Yamamoto, N., Sakurai, H., Ishii, K.J., Yamaoka, S., Kawai, T., Matsuura, Y., Takeuchi, O., Akira, S. Nat. Immunol. (2006) [Pubmed]
 
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