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Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Biochem+Biophys+Rep 2016 ; 5 (ä): 439-47 Nephropedia Template TP
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Complicated behavior of G-quadruplexes and evaluating G-quadruplexes ligands in various systems mimicking cellular circumstance #MMPMID28955851
Wang SK; Su HF; Gu YC; Lin SL; Tan JH; Huang ZS; Ou TM
Biochem Biophys Rep 2016[Mar]; 5 (ä): 439-47 PMID28955851show ga
Environments surrounding G-rich sequences remarkably affect the conformations of these structures. A proper evaluation system mimicking the crowded environment in a cell with macromolecules should be developed to perform structural and functional studies on G-quadruplexes. In this study, the topology and stability of a G-quadruplex formed by human telomeric repeat sequences were investigated in a macromolecule-crowded environment created by polyethylene glycol 200 (PEG200), tumor cell extract, and Xenopus laevis egg extract. The interactions between small molecules and telomeric G-quadruplexes were also evaluated in the different systems. The results suggested that the actual behavior of G-quadruplex structures in cells extract is quite different from that in the PEG crowding system, and proteins or other factors in extracts might play a very important role in G-quadruplex structures.