Construction of a novel artificial-ribozyme-releasing plasmid
- 1 August 1990
- journal article
- research article
- Published by Oxford University Press (OUP) in Protein Engineering, Design and Selection
- Vol. 3 (8), 733-737
- https://doi.org/10.1093/protein/3.8.733
Abstract
A novel ‘active-ribozyme-releasing system’ was constructed, taking advantage of the consensus sequence of a new class of ribozyme. An active ribozyme sequence, targeted for the SFWl gene (a yeast suppressor gene for flocculation) was fused just downstream of the T7 promoter. The 3′ terminus of the Arst ribozyme was designed to be trimmed by the second ribozyme connected to the downstream of the first active ribozyme. In vitro experiments revealed that the active ribozyme targeted to SFLl was successfully released by the action of the second rhzyme, subsequently cleaving the SFL1 mRNA at the predetermined site. Since the first active ribozyme with a defined 3′-terminus can be produced even when a circular DNA is used as a template, this kind of construct has a potential to release an ‘active ribozyme’ tailored to destroy a target gene (RNA) in vivo. Moreover, the second ribozyme in this construct can be utilized as a universal pseudo-terminator for generation of any RNA transcripts inserted in place of the cassette portion of the first ribozyme.This publication has 2 references indexed in Scilit:
- Kinetic characterization of the recombinant ribonuclease from Bacillus amyloliquefaciens (barnase) and investigation of key residues in catalysis by site-directed mutagenesisBiochemistry, 1989
- Two histidine residues are essential for ribonuclease T1 activity as is the case for ribonuclease ABiochemistry, 1987