Download MendeleyThe ZZ-type zinc finger of ZZZ3 modulates the ATAC complex-mediated histone acetylation and gene activation.
Mi, W., Zhang, Y., Lyu, J., Wang, X., Tong, Q., Peng, D., Xue, Y., Tencer, A.H., Wen, H., Li, W., Kutateladze, T.G., Shi, X.(2018) Nat Commun 9: 3759-3759
- PubMed: 30217978
- DOI: https://doi.org/10.1038/s41467-018-06247-5
- Primary Citation of Related Structures:
6E83, 6E86 - PubMed Abstract:
Recognition of histones by epigenetic readers is a fundamental mechanism for the regulation of chromatin and transcription. Most reader modules target specific post-translational modifications on histones. Here, we report the identification of a reader of histone H3, the ZZ-type zinc finger (ZZ) domain of ZZZ3, a subunit of the Ada-two-A-containing (ATAC) histone acetyltransferase complex. The solution NMR structure of the ZZ in complex with the H3 peptide reveals a unique binding mechanism involving caging of the N-terminal Alanine 1 of histone H3 in an acidic cavity of the ZZ domain, indicating a specific recognition of H3 versus other histones. Depletion of ZZZ3 or disruption of the ZZ-H3 interaction dampens ATAC-dependent promoter histone H3K9 acetylation and target gene expression. Overall, our study identifies the ZZ domain of ZZZ3 as a histone H3 reader that is required for the ATAC complex-mediated maintenance of histone acetylation and gene activation.
Organizational Affiliation:
Department of Epigenetics and Molecular Carcinogenesis, Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA.
