Induction of ribozyme activity by anti-ribozyme oligonucleotides
نویسندگان
چکیده
منابع مشابه
Controlling ribozyme activity by metal ions.
The observed rates of ribozyme cleavage reactions are strongly dependent on the nature of the metal ion present. Metal ions can thereby exhibit a stronger inhibiting or accelerating effect compared to Mg(2+), which is usually considered the natural cofactor. Alkaline, alkaline earth, transition, d(10), and other metal ions are applied either to gain a spectroscopic handle on the metal center, a...
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A critical event in the origin of life is thought to have been the emergence of an RNA molecule capable of replicating a primordial RNA "genome." Here we describe the evolution and engineering of an RNA polymerase ribozyme capable of synthesizing RNAs of up to 95 nucleotides in length. To overcome its sequence dependence, we recombined traits evolved separately in different ribozyme lineages. T...
متن کاملInhibition of telomerase activity by HDV ribozyme in cancers
BACKGROUND Telomerase plays an important role in cell proliferation and carcinogenesis and is believed to be a good target for anti-cancer drugs. Elimination of template function of telomerase RNA may repress the telomerase activity. METHODS A pseudo-knotted HDV ribozyme (g.RZ57) directed against the RNA component of human telomerase (hTR) was designed and synthesized. An in vitro transcripti...
متن کاملModulation of Group I Ribozyme Activity by Cationic Porphyrins
The effects of cationic porphyrins on the catalytic activities of four group I ribozymes were investigated. A cationic porphyrin possessing four pyridinium moieties (pPyP) inhibited two group IC3 ribozymes (Syn Rz and Azo Rz) and a group IC1 ribozyme (Tet Rz). In the case of a group IA2 ribozyme (Td Rz), however, pPyP served not only as an inhibitor but also as an activator, and the effects of ...
متن کاملActivation of HIV-specific ribozyme activity by self-cleavage.
A hammerhead ribozyme designed to cleave in trans the R region of HIV-1 RNA was inserted into a eukaryotic expression vector. This ribozyme was studied in vitro using the T3 RNA polymerase promoter located upstream of the eukaryotic promoter. The ribozyme showed no activity against its specific target sequence under any condition tested. To decrease the influence of potential cis inhibitory seq...
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ژورنال
عنوان ژورنال: Nucleic Acids Symposium Series
سال: 1999
ISSN: 0261-3166,1746-8272
DOI: 10.1093/nass/42.1.279