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Journal articles
The D-Box-activating domain (DAD) is a new proteolysis signal that stimulates the silent D-Box sequence of Aurora-A.
Abstract : We have demonstrated previously that Xenopus Aurora-A is degraded at late mitosis by the APC/Fizzy-Related in a D-Box-dependent manner. Here we demonstrate that, although Aurora-B possesses the same D-Box as Aurora-A, Aurora-B is not degraded by this ubiquitin ligase. We have constructed a chimera Aurora-A/B with the N-terminus of Aurora-A and the C-terminus of Aurora-B and we have examined its degradation by APC/Fizzy-Related. We demonstrate that the N-terminus of Aurora-A confers degradation capacity on the C-terminus of Aurora-B and that this feature is blocked by mutation of the conserved D-Box sequence. We characterize the minimal degradation signal at the N-terminus of Aurora-A and demonstrate that its deletion blocks the degradation of this protein by APC/Fizzy-Related. Thus, we conclude that two different degradation signals are required for proteolysis of Aurora-A. The first one, which we designated D-Box-activating domain, within the N-terminal domain of Aurora-A confers the functionality to the second, a silent D-Box, present within the C-terminus of the kinase.
https://www.hal.inserm.fr/inserm-00966251
Contributor : Claude Prigent <>
Submitted on : Wednesday, June 23, 2021 - 8:11:04 AM
Last modification on : Thursday, June 24, 2021 - 4:54:15 PM
Contributor : Claude Prigent <>
Submitted on : Wednesday, June 23, 2021 - 8:11:04 AM
Last modification on : Thursday, June 24, 2021 - 4:54:15 PM
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2002TLorca_The D Box activatin...
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