Smc5/6 complex regulates Sgs1 recombination functions.
The family of RecQ helicases is evolutionary conserved from bacteria to humans and play key roles in genome stability. The budding yeast RecQ helicase Sgs1 has been implicated in several key processes during the repair of DNA damage by homologous recombination as part of the STR complex (Sgs1-Top3-Rmi1). Limited information on how is Sgs1 recruited and regulated at sites of damage is available. Recently, we and others have uncover a direct link between the Smc5/6 complex and Sgs1. Most roles of Sgs1 during recombination, including DNA end resection, Holiday junction dissolution, and crossover suppression, are regulated through Mms21-dependent SUMOylation. Smc5/6 first acts as a recruiting platform for STR and then SUMOylates STR components to regulate their function. Importantly, the assembly of STR is totally independent of Smc5/6. Here, we provide a brief overview of STR regulation by Smc5/6.
Cell Cycle Group, MRC Clinical Sciences Centre, Imperial College, London, W12 0NN, UK.
Marcelino
M
Bermúdez-López
Cell Cycle Group, MRC Clinical Sciences Centre, Imperial College, London, W12 0NN, UK. luis.aragon@csc.mrc.ac.uk.
Luis
L
Aragon
D018797:Cell Cycle Proteins / Q000235:genetics; D004249:DNA Damage / Q000235:genetics; D004268:DNA-Binding Proteins / Q000235:genetics; D042822:Genomic Instability; D059765:Homologous Recombination / Q000235:genetics*; D046912:Multiprotein Complexes / Q000235:genetics; D053484:RecQ Helicases / Q000235:genetics*; D025842:SUMO-1 Protein / Q000235:genetics; D012441:Saccharomyces cerevisiae / Q000235:genetics*; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics*; D058207:Sumoylation / Q000235:genetics
D018797:Cell Cycle Proteins; D004268:DNA-Binding Proteins; C500948:Mms21 protein, S cerevisiae; D046912:Multiprotein Complexes; C486627:SMC5 protein, S cerevisiae; D025842:SUMO-1 Protein; D029701:Saccharomyces cerevisiae Proteins; C090472:SGS1 protein, S cerevisiae; D053484:RecQ Helicases
DNA damage; Homologous recombination; SUMOylation; Sgs1; Smc5/6 complex; Top3
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