RNA ribozyme polymerases, dephosphorylases, restriction...

Chemistry: molecular biology and microbiology – Vector – per se

Reexamination Certificate

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C536S024500, C536S025300

Reexamination Certificate

active

06180399

ABSTRACT:

This invention concerns compositions of RNA functioning as an RNA enzyme, i.e. a ribozyme in several capacities: dephosphorylase (acid phosphatase and transphosphorylase), ribonucleotidyl transferase (polymerase activity) and sequence-specific endoribonuclease activities.
SUMMARY
It is found that purified ribonucleic acid (RNA) can serve as an enzyme acting on other RNA molecules in vitro (ribozyme) as a: 1) dephosphorylating enzyme catalyzing the removal of 3′ terminal phosphate of RNA in a sequence-specific manner, 2) RNA polymerase (nucleotidyl transferase) catalyzing the conversion of oligoribonucleotides to polyribonucleotides, 3) sequence specific endoribonuclease. (This latter activity is also referred to as RNA restriction endanuclease or endoribonuclease activity.)


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