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An RNA molecule that acts as a catalyst, especially for the cleavage of RNA strands at specific sites.


(Biochemistry) an RNA molecule capable of catalysing a chemical reaction, usually the cleavage of another RNA molecule
[C20: from ribo(nucleic acid) + (en)zyme]


(ˈraɪ bəˌzaɪm)
a segment of RNA that can act as a catalyst.
[1985–90; ribo(some) + (en)zyme]
ri`bo•zy′mal, adj.
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References in periodicals archive ?
AMV reverse transcriptase, Taq DNA polymerase, RNA enzyme inhibitor, 100bp DNA Ladder, dNTP, Mg[Cl.
One theory has been that a right-handed RNA enzyme emerged with the capacity to make copies of other right-handed RNA molecules, including itself, while ignoring left-handed L-RNA.
Firstly, to stop HIV from penetrating the host cells, the researchers gave the cells an RNA enzyme that would cleave the message that codes for a protein called CCR5, preventing HIV from using the protein as a co-receptor to enter the cell.
These RNA molecules have an intriguing structural motif, absent in normal RNA, that recognizes an amino acid and chemically binds to it, forming a novel type of RNA enzyme, or ribozyme.
The RNA enzyme, or ribozyme, was identified in a soup of randomly generated strings of RNA nucleotides.

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