==Function== Helicases are often used to separate strands of a DNA double helix or a self-annealed RNA molecule using the energy from ATP hydrolysis, a process characterized by the breaking of hydrogen bonds between annealed nucleotide bases. They also function to remove nucleic acid-associated proteins and catalyze homologous DNA recombination. M...
(from the article `heredity`) ...of the double helix first must be unwound from each other. A class of enzymes called DNA topoisomerases removes helical twists by cutting a DNA ...
Synonym for DNA helicase ... <enzyme, molecular biology> A prokaryote enzyme that uses the hydrolysis of ATP to unwind the DNA helix at the replication fork, to allow the resulting single strands to be copied. Two molecules of ATP are required for each nucleotide pair of the duplex. ... (18 Nov 1997) ... 
See DNA helicase.
Type: Term Pronunciation: hel-ĭ-kāz Definitions: 1. A general term describing enzymes capable of unwinding the DNA double helix beginning at the replication fork.
Helicase: An enzyme that unwinds double-strand DNA into two single DNA strands.
helicase A class of enzymes vital to all living organisms which unwinds double-strand DNA into two single DNA strands.
enzyme that unwinds DNA by breaking the hydrogen bonds between the nitrogenous base pairs, using ATP