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Trends Biochem Sci. 2003 Feb;28(2):66-9.

The THAP domain: a novel protein motif with similarity to the DNA-binding domain of P element transposase.

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  • 1Laboratoire de Biologie Vasculaire, Institut de Pharmacologie et de Biologie Structurale, CNRS UMR 5089, 205 route de Narbonne, 31077 Toulouse, France.

Abstract

We have identified a novel evolutionarily conserved protein motif - designated the THAP domain - that defines a new family of cellular factors. We have found that the THAP domain presents striking similarities with the site-specific DNA-binding domain (DBD) of Drosophila P element transposase, including a similar size, N-terminal location, and conservation of the residues that define the THAP motif, such as the C2CH signature (Cys-Xaa(2-4)-Cys-Xaa(35-50)-Cys-Xaa(2)-His). Our results suggest that the THAP domain is a novel example of a DBD that is shared between cellular proteins and transposases from mobile genomic parasites.

PMID:
12575992
[PubMed - indexed for MEDLINE]

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