2012
Unwinding of synthetic replication and recombination substrates by Srs2
MARINI PALOMEQUE, María Victoria a Lumír KREJČÍZákladní údaje
Originální název
Unwinding of synthetic replication and recombination substrates by Srs2
Autoři
MARINI PALOMEQUE, María Victoria (858 Uruguay, domácí) a Lumír KREJČÍ (203 Česká republika, garant, domácí)
Vydání
DNA Repair, ELSEVIER, 2012, 1568-7864
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.274
Kód RIV
RIV/00216224:14310/12:00057534
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000310761100002
Klíčová slova anglicky
DNA repair; Recombination; Srs2; Replication; Helicase
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 22. 4. 2013 14:51, Ing. Andrea Mikešková
Anotace
V originále
The budding yeast Srs2 protein possesses 3 to 5 DNA helicase activity and channels untimely recombination to post-replication repair by removing Rad51 from ssDNA. However, it also promotes recombination via a synthesis-dependent strand-annealing pathway (SDSA). Furthermore, at the replication fork, Srs2 is required for fork progression and prevents the instability of trinucleotide repeats. To better understand the multiple roles of the Srs2 helicase during these processes, we analysed the ability of Srs2 to bind and unwind various DNA substrates that mimic structures present during DNA replication and recombination. While leading or lagging strands were efficiently unwound, the presence of ssDNA binding protein RPA presented an obstacle for Srs2 translocation. We also tested the preferred directionality of unwinding of various substrates and studied the effect of Rad51 and Mre11 proteins on Srs2 helicase activity. These biochemical results help us understand the possible role of Srs2 in the processing of stalled or blocked replication forks as a part of post-replication repair as well as homologous recombination (HR).
Návaznosti
GAP207/12/2323, projekt VaV |
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GA301/09/1917, projekt VaV |
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GD203/09/H046, projekt VaV |
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ME10048, projekt VaV |
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