A simple and versatile method for the preparation of vector-primers by adapter-end-primer ligation.
A group of efficient cDNA cloning strategies employs vector-primers where cDNA synthesis starts from the oligo(dT)-primer tail, which is conventionally attached to cloning vectors by use of terminal deoxynucleotidyl transferase. An alternative, efficient and more versatile method of vector-primer preparation is to directly ligate, by use of T4 DNA ligase, a double-digested vector, e.g., pTZ18R/Pst I/Bam HI, to a synthetic (Bam HI)-adapter-end-primer, 5'-pGATCC-Tn or 5'-pGATCC-site-specific sequence. The use of a utility-vector containing a sizable spacer between the two selected restriction sites enables unambiguous separation on agarose gels of the double-digested vector precursors from single-digested ones, further simplifying the vector preparation. The adapter-end-primer ligation method can be applied to any suitable vectors with multiple cloning sites for the preparation of not only oligo(dT)-tailed, but also site-specific sequence-tailed vectors. Thus, the method enables the cDNA cloning of total poly (A+)-mRNAs, as well as specific RNA or mRNA species with or without poly(A)-tail.
Eun
H M
HM
University of Calgary.
Yoon
J W
JW
D001709:Biotechnology; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics; D011088:DNA Ligases; D004262:DNA Restriction Enzymes; D004926:Escherichia coli / Q000235:genetics; D005821:Genetic Techniques; D005822:Genetic Vectors; D010957:Plasmids; D014170:Transformation, Genetic
D004247:DNA; D004262:DNA Restriction Enzymes; D011088:DNA Ligases