2012
Dual roles of the SUMO-interacting motif in the regulation of Srs2 sumoylation.
KOLESÁR, Peter, Prabha SARANGI, Veronika ALTMANNOVÁ, Xiaolan ZHAO, Lumír KREJČÍ et. al.Základní údaje
Originální název
Dual roles of the SUMO-interacting motif in the regulation of Srs2 sumoylation.
Autoři
KOLESÁR, Peter (703 Slovensko, domácí), Prabha SARANGI (356 Indie), Veronika ALTMANNOVÁ (203 Česká republika, domácí), Xiaolan ZHAO (840 Spojené státy) a Lumír KREJČÍ (203 Česká republika, garant, domácí)
Vydání
Nucleic Acids Research, Oxford, Oxford University Press, 2012, 0305-1048
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 8.278
Kód RIV
RIV/00216224:14110/12:00057621
Organizační jednotka
Lékařská fakulta
UT WoS
000308959800028
Klíčová slova anglicky
Srs2 SUMO PCNA
Změněno: 22. 4. 2013 16:19, Soňa Böhmová
Anotace
V originále
The Srs2 DNA helicase of Saccharomyces cerevisiae affects recombination in multiple ways. Srs2 not only inhibits recombination at stalled replication forks but also promotes the synthesis-dependent strand annealing (SDSA) pathway of recombination. Both functions of Srs2 are regulated by sumoylation-sumoylated PCNA recruits Srs2 to the replication fork to disfavor recombination, and sumoylation of Srs2 can be inhibitory to SDSA in certain backgrounds. To understand Srs2 function, we characterize the mechanism of its sumoylation in vitro and in vivo. Our data show that Srs2 is sumoylated at three lysines, and its sumoylation is facilitated by the Siz SUMO ligases. We also show that Srs2 binds to SUMO via a C-terminal SUMO-interacting motif (SIM). The SIM region is required for Srs2 sumoylation, likely by binding to SUMO-charged Ubc9. Srs2's SIM also cooperates with an adjacent PCNA-specific interaction site in binding to sumoylated PCNA to ensure the specificity of the interaction. These two functions of Srs2's SIM exhibit a competitive relationship: sumoylation of Srs2 decreases the interaction between the SIM and SUMO-PCNA, and the SUMO-PCNA-SIM interaction disfavors Srs2 sumoylation. Our findings suggest a potential mechanism for the equilibrium of sumoylated and PCNA-bound pools of Srs2 in cells.
Návaznosti
EE2.3.09.0186, projekt VaV |
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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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LC06030, projekt VaV |
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ME10048, projekt VaV |
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MSM0021622413, záměr |
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MUNI/A/0822/2011, interní kód MU |
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