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A WW domain protein TAZ is a critical coactivator for TBX5, a transcription factor implicated in Holt–Oram syndrome
Open accessAbstract
The T-box transcription factor TBX5 plays essential roles in cardiac and limb development. Various mutations in the TBX5 gene have been identified in patients with Holt–Oram syndrome, which is characterized by congenital defects in the heart and upper extremities. In this study, we identified a WW-domain-containing transcriptional regulator TAZ as a potent TBX5 coactivator. TAZ directly associates with TBX5 and markedly stimulates TBX5-dependent promoters by interacting with the histone acetyltransferases p300 and PCAF. YAP, a TAZ-related protein with conserved functional domains, also stimulates TBX5-dependent transcription, possibly by forming a heterodimer with TAZ. TBX5 lacks a PY motif, which mediates the association of other proteins with TAZ, and interacts with TAZ through multiple domains including its carboxyl-terminal structure. Truncation mutants of TBX5 identified in patients with Holt–Oram syndrome were markedly impaired in their ability to associate with and be stimulated by TAZ. These findings reveal key roles for TAZ and YAP in the control of TBX5-dependent transcription and suggest the involvement of these coactivators in cardiac and limb development.
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Ghosh, T. K. (2001) · Human Molecular Genetics · doi:10.1093/hmg/10.18.1983 · Cited by 150
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Metadata
- Authors
- Murakami, M., Nakagawa, M., Olson, E. N., & Nakagawa, O.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2005-12-06
- Volume
- 102
- Issue
- 50
- Pages
- 18034-18039
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2073157874
- Cited by
- 263
- References
- 5
- FWCI
- 2.97
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: A WW domain protein TAZ is a critical coactivator for TBX5, a transcription factor implicated in Holt–Oram syndrome. https://app.cochat.ai/papers/10.1073/pnas.0509109102
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- Murakami, M., Nakagawa, M., Olson, E. N., & Nakagawa, O. (2005). A WW domain protein TAZ is a critical coactivator for TBX5, a transcription factor implicated in Holt–Oram syndrome. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0509109102
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