Improved artificial origins for phage φ29 terminal protein-primed replication. Insights into early replication events
Publicated to:Nucleic Acids Research. 42 (15): 9792-9806 - 2014-01-01 42(15), DOI: 10.1093/nar/gku660
Authors: Gella P; Salas M; Mencía M
Affiliations
Abstract
The replication machinery of bacteriophage Φ29 is a paradigm for protein-primed replication and it holds great potential for applied purposes. To better understand the early replication events and to find improved origins for DNA amplification based on the Φ29 system, we have studied the end-structure of a double-stranded DNA replication origin. We have observed that the strength of the origin is determined by a combination of factors. The strongest origin (30-fold respect to wt) has the sequence CCC at the 3′ end of the template strand, AAA at the 5′ end of the non-template strand and 6 nucleotides as optimal unpairing at the end of the origin. We also show that the presence of a correctly positioned displaced strand is important because origins with 5′ or 3′ ss-DNA regions have very low activity. Most of the effect of the improved origins takes place at the passage between the terminal protein-primed and the DNA-primed modes of replication by the DNA polymerase suggesting the existence of a thermodynamic barrier at that point. We suggest that the template and non-template strands of the origin and the TP/DNA polymerase complex form series of interactions that control the critical start of terminal protein-primed replication. © The Author(s) 2014.
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Bibliometric impact. Analysis of the contribution and dissemination channel
The work has been published in the journal Nucleic Acids Research due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2014, it was in position 20/290, thus managing to position itself as a Q1 (Primer Cuartil), in the category Biochemistry & Molecular Biology.
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Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-07-03:
- Scopus: 2
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Leadership analysis of institutional authors
There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (GELLA MONTERO, PABLO) .