| Literature DB >> 8650002 |
Abstract
Controlled ribonucleotide tailing of cDNA ends (CRTC) by terminal deoxynucleotidyl transferase is a polymerase chain reaction (PCR)-mediated technique that was developed to facilitate cloning and direct sequence analysis of complete 5'-terminal unknown coding regions of rare RNA molecules. In contrast with standard tailing protocols using dNTPs as the substrate, ribo-tailing of cDNA ends is easily controllable, self-limited (from two to four rNMP incorporations) and highly efficient (>98%). By virtue of the homopolymeric ribo-tail, the modified cDNA is anchored to the 3' overhang of a double-stranded DNA-adaptor in a T4 DNA ligase-dependent ligation. PCR amplification, mediated by two sequence-specific primers, yields the desired unique product suitable for cloning and dideoxy-sequencing.Entities:
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Year: 1996 PMID: 8650002 PMCID: PMC145852 DOI: 10.1093/nar/24.9.1789
Source DB: PubMed Journal: Nucleic Acids Res ISSN: 0305-1048 Impact factor: 16.971