Transcription of synthetic oligonucleotides
Belova, N.V.; Denisova, L.I.; Zagrebel'nyĭ, S.N.; Pustoshilova, N.M.; Saĭkovich, E.G.
Molekuliarnaia Biologiia 13(4): 845-853
1979
ISSN/ISBN: 0026-8984 PMID: 381899 Document Number: 145456
The decadeoxynucleotides d(pTTC)3 and d(CCATCTTTT) transcription by E. coli RNA-polymerase was studied. The nucleotide composition of d(pTTC)3 transcript was shown to be consistent with that of the template, but RNA-product was several times longer than the template. With nonanucleotide d(CCATCTTTT) the poly(A) synthesis was observed. This fact may be attributed to the reiteration on the TTTT-cluster. When using the oligonucleotide primers d(pGGA) and r(pAAAA) complementary to the templates d(pTTC)3 and d(CCATCTTTT), accordingly, the nucleosidetriphosphates concentration being reduced and the RNA-polymerase "holo" being replaced by "core", the considerable decrease in the unhomogeneity of the transcript length and in the length itself was found. With d(pTTC)3 as a template the length of RNA-product was found to be of 24-25 nucleotides and with d(CCATCTTTT) it was of 18-19 nucleotides. The sequence of RNA transcribed from both templates in the presence of primers was in accordance with the structure of templates.