RNA polymerase (redirected from Dna-directed rna polymerases)

RNA polymerase

n.

A polymerase that catalyzes the synthesis of RNA from a DNA or RNA template.

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RNA polymerase,

an enzyme that catalyzes the assembly of ribonucleoside triphosphates into RNA, with single-stranded DNA serving as the template. Also called RNA nucleotidyltransferase.

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polymerase

an enzyme that catalyzes polymerization, particularly of nucleic acids.

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polymerase chain reaction

see pcr1.

RNA polymerase

1. an enzyme that synthesizes an RNA copy of the sequence in a limited region of DNA in a process known as DNA transcription. Called also DNA-dependent RNA polymerase.

2. a viral enzyme that synthesizes RNA from an RNA template during viral replication. Called also RNA-dependent RNA polymerase.

RNA-dependent RNA polymerase

see RNA polymerase (above).

Taq polymerase

a DNA polymerase that functions at high temperature; derived from the bacterium Thermus aquaticus and used in the polymerase chain reaction.