Helicase

Helicase (Hel) is a motor protein which separates nucleic acid strands like DNA double helix or self-annealed RNA. They use ATP hydrolysis for energy. Hel falls into 5 superfamilies (SF1-SF5). Some Hel contain a Helicase and RNase D C terminal Domain (HRDC). The α-thalassemia and mental retardation X-linked syndrome helicase (ATRX ), contains an ATRX-Dnmt3-Dnmt3L (ADD) domain in which many disease-related mutations are found.

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Alexander Berchansky, Michal Harel, Wayne Decatur, Joel L. Sussman