Interaction between human telomeric G-quadruplexes characterized by single molecule magnetic tweezers Project supported by the National Natural Science Foundation of China (Grant Nos. 11474346 and 11774407), the Key Research Program of Frontier Sciences, Chinese Academy of Sciences (Grant No. QYZDB-SSW-SLH045), and the National Key Research and Development Program, China (Grant No. 2016YFA0301500). |
(color online) Force ramp experiments of dimeric G-quadruplexes and mono G-quadruplex. (a) Typical force responses of dual G-quadruplexes in a stretching cycle (upper panel) with a loading rate of 16 pN/s (lower panel). (b) Unfolding force distribution of the first G-quadruplex in the dimeric G-quadruplexes fitted with Evans model (upper panel, N = 200) and monomeric G-quadruplex (lower panel, N = 198). |