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RNA synthetase

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noun Biochemistry.
  1. an enzyme that catalyzes the synthesis of RNA in cells infected with RNA viruses, allowing production of copies of the viral RNA.
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Origin of RNA synthetase

First recorded in 1960–65; synthet(ic) + -ase
Also called replicase, RNA replicase.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018