Abstract
Retinoblastoma-binding protein 1 (RBBP1), also known as AT-rich interaction domain 4A (ARID4A), is a tumour suppressor involved in the regulation of the epigenetic programming in leukemia and Prader-Willi/Angelman syndromes. The ARID domain of RBBP1 binds to DNA non-specifically and has gene suppression activity. However, no structural data has been obtained for the human RBBP1 ARID domain so far. Here we report the near-complete 1H, 13C, 15N backbone and side-chain NMR assignment of a 27kDa tandem PWWP-ARID domain construct that spans residues 171-414 with the removal of a short disordered region between the two domains. The predicted secondary structure based on the assigned chemical shifts is consistent with the structures of the isolated PWWP domain of human RBBP1 previously solved and the homologous ARID domains of other proteins.
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