Isolation of an RNA-Directed RNA Polymerase–Specific cDNA Clone from Tomato

Isolation of an RNA-directed RNA polymerase-specific cDNA clone from tomato.

A 3600-bp RNA-directed RNA polymerase (RdRP)-specific cDNA comprising an open reading frame (ORF) of 1114 amino acids was isolated from tomato. The putative protein encoded by this ORF does not share homology with any characterized proteins. Antibodies that were raised against synthetic peptides whose sequences have been deduced from the ORF were shown to specifically detect the 127-kD tomato R...

RNA Isolation (Small RNA Extraction). Fatemeh Mehrpooyan*

RNA isolation (Total RNA Extraction from High Polysaccharide Plants). Fatemeh Mehrpooyan*

Alcohol dehydrogenase in Drosophila: isolation and characterization of messenger RNA and cDNA clone.

The mRNA for alcohol dehydrogenase (ADH) in D. melanogaster has been identified by translation in a cell-free system. The in vitro synthesized polypeptide, specifically precipitated by anti-ADH antibody, has identical subunit molecular weight (25,000 daltons) and tryptic peptide profile to the in vivo synthesized ADH. The poly A containing ADH-mRNA has been purified by specific precipitation of...

Enhancement of RNA Interference Effect in P19 EC Cells by an RNA-dependent RNA Polymerase

Background: RNA interference (RNAi) is a phenomenon uses double-stranded RNA (dsRNA) to specifically inhibit gene expression. The non-specific silencing caused by interferon response to dsRNA in mammalian cells limits the potential of utilizing RNAi to study gene function. Duplexes of 21-nucleotide short interfering dsRNA (siRNA) inhibit gene expression by RNAi. In some organisms, siRNA can als...