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- W4293047591 abstract "G-quadruplexes (G4s) have been shown to be involved in the regulation of multiple cellular processes. Exploring putative G4-forming sequences (PQSs) in heat-responsive genes of rice and their folding structures under different conditions will help to understand the mechanism in response to heat stress. In this work, we discovered a prevalence of PQSs in nuclease hypersensitive sites within the promoters of heat-responsive genes. Moreover, 50 % of the searched G3 PQSs ((G3+ L1-7 )3+ G3+ ) locate in heat shock transcription factors. Circular dichroism spectroscopy, thermal difference spectroscopy, and UV melting analysis demonstrated the representative PQSs could adopt stable G4s at physiological temperature and potassium concentration. These PQSs were able to stall Klenow fragment (KF) DNA polymerase by the formation of G4s. However, the G4s with Tm values around 50-60 °C could be increasingly unwound by KF with the increase of temperatures from 25 to 50 °C, implying that these G4s could sense the changes in temperature by structural switch. This work offers fresh clues to understanding the potential of G4-involved functions of PQSs and the molecular events in plants in response to heat stress." @default.
- W4293047591 created "2022-08-25" @default.
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- W4293047591 date "2022-09-20" @default.
- W4293047591 modified "2023-09-27" @default.
- W4293047591 title "Potential G‐quadruplexes within the Promoter Nuclease Hypersensitive Sites of the Heat‐Responsive Genes in Rice" @default.
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- W4293047591 doi "https://doi.org/10.1002/cbic.202200405" @default.
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