Functional analyses of the Dof domain, a zinc finger DNA-binding domain, in a pumpkin DNA-binding protein AOBP

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Abstract

AOBP, a DNA-binding protein in pumpkin, contains a Dof domain that is composed of 52 amino acid residues and is highly conserved in several DNA- binding proteins of higher plants. The Dof domain has a significant resemblance to Cys2/Cys2 zinc finger DNA-binding domains of steroid hormone receptors and GATA1, but has a longer putative loop where an extra Cys residue is conserved. We show that the Dof domain in AOBP functions as a zinc finger DNA-binding domain and suggest that the Cys residue uniquely conserved in the putative loop might negatively regulate the binding to DNA.

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Shimofurutani, N., Kisu, Y., Suzuki, M., & Esaka, M. (1998). Functional analyses of the Dof domain, a zinc finger DNA-binding domain, in a pumpkin DNA-binding protein AOBP. FEBS Letters, 430(3), 251–256. https://doi.org/10.1016/S0014-5793(98)00670-X

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