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. 1979 Jun 11;6(7):2545–2560. doi: 10.1093/nar/6.7.2545

A study on the unprimed poly (dA-dT) synthesis catalyzed by preparations of E. coli DNA polymerase I.

I A Nazarenko, L E Bobko, A G Romashchenko, Y L Khripin, R I Salganik
PMCID: PMC327870  PMID: 379822

Abstract

Evidence was obtained indicating that the initiation of poly (dA-dT) de novo synthesis is provided by deoxynucleoside diphosphate: oligonucleotide deoxynucleotidyl transferase (dNDP-transferase present in preparations of E. coli DNA polymerase I and capable of catalyzing the unprimed polymerization of dNDP. dNDP-transferase synthesyzes short oligonucleotides which form template-primer complexes repeatedly replicated by DNA polymerase I. This conclusion was based on the following observations: the abolition of the lag period of poly (dA-dT) synthesis by preincubation of DNA-polymerase I preparations with dADP and dTDP; the presence of oligo (dA-dT) among the preincubation products; the suppressive effect of dithiothreitol and N-ethylmaleimide (inhibitors of dNDP-transferase) on the de novo, but not on the primed synthesis of poly (dA-dT), catalyzed by preparations of DNA-polymerase I.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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