2021
Single-molecule visualization of human RECQ5 interactions with single-stranded DNA recombination intermediates
XUE, C. Y., Lucia MOLNÁROVÁ, J. B. STEINFELD, W. X. ZHAO, C. J. MA et. al.Základní údaje
Originální název
Single-molecule visualization of human RECQ5 interactions with single-stranded DNA recombination intermediates
Autoři
XUE, C. Y., Lucia MOLNÁROVÁ (703 Slovensko, domácí), J. B. STEINFELD, W. X. ZHAO, C. J. MA, Mário ŠPÍREK (703 Slovensko, domácí), K. KANIECKI, Y. KWON, Ondrej BELAN (203 Česká republika), Kateřina KREJČÍ (203 Česká republika, domácí), S. J. BOULTON, P. SUNG, E. C. GREENE a Lumír KREJČÍ (203 Česká republika, garant, domácí)
Vydání
Nucleic acids research, Oxford, Oxford University Press, 2021, 0305-1048
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 19.160
Kód RIV
RIV/00216224:14110/21:00118917
Organizační jednotka
Lékařská fakulta
UT WoS
000610552100027
Klíčová slova anglicky
REPLICATION PROTEIN-A; HOMOLOGOUS RECOMBINATION; BLOOMS-SYNDROME; RAD51 FILAMENTS; ATP HYDROLYSIS; POLYMERASE-II; HRDC DOMAIN; HELICASE; SRS2; REPAIR
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 7. 4. 2021 10:37, Mgr. Tereza Miškechová
Anotace
V originále
RECQ5 is one of five RecQ helicases found in humans and is thought to participate in homologous DNA recombination by acting as a negative regulator of the recombinase protein RAD51. Here, we use kinetic and single molecule imaging methods to monitor RECQ5 behavior on various nucleoprotein complexes. Our data demonstrate that RECQ5 can act as an ATP-dependent single-stranded DNA (ssDNA) motor protein and can translocate on ssDNA that is bound by replication protein A (RPA). RECQ5 can also translocate on RAD51-coated ssDNA and readily dismantles RAD51-ssDNA filaments. RECQ5 interacts with RAD51 through protein-protein contacts, and disruption of this interface through a RECQ5-F666A mutation reduces translocation velocity by similar to 50%. However, RECQ5 readily removes the ATP hydrolysis-deficient mutant RAD51-K133R from ssDNA, suggesting that filament disruption is not coupled to the RAD51 ATP hydrolysis cycle. RECQ5 also readily removes RAD51-I287T, a RAD51 mutant with enhanced ssDNA-binding activity, from ssDNA. Surprisingly, RECQ5 can bind to double-stranded DNA (dsDNA), but it is unable to translocate. Similarly, RECQ5 cannot dismantle RAD51-bound heteroduplex joint molecules. Our results suggest that the roles of RECQ5 in genome maintenance may be regulated in part at the level of substrate specificity.
Návaznosti
EF16_025/0007381, projekt VaV |
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EF16_027/0008360, projekt VaV |
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GA17-17720S, projekt VaV |
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206292/E/17/Z, interní kód MU |
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