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The growing amount of literature about G-quadruplex DNA clearly demonstrates that such a structure is no longer viewed as just a biophysical strangeness but it is instead being considered as an important target for the treatment of various human disorders such as cancers or venous thrombosis. In this scenario, with the aim of finding brand new molecular scaffolds able to interact with the groove of...
The present study has employed a combination of spectroscopic, calorimetric and computational methods to explore the binding of the three side-chained triazatruxene derivative, termed azatrux, to a human telomeric G-quadruplex sequence, under conditions of molecular crowding. The binding of azatrux to the tetramolecular parallel [d(TGGGGT)] 4 quadruplex in the presence and absence of crowding...
Human telomeric G-quadruplex structures are known to be promising targets for an anticancer therapy. In the past decade, several research groups have been focused on the design of new ligands trying to optimize the interactions between these small molecules and the G-quadruplex motif. In most of these studies, the target structures were the single quadruplex units formed by short human DNA telomeric...
Seryl-tRNA synthetases (SerRS) covalently attach serine to cognate tRNA Ser . Atypical SerRSs, considerably different from canonical enzymes, have been found in methanogenic archaea. A crystal structure of methanogenic-type SerRS revealed a motif within the active site (serine ordering loop; SOL), which undergoes a notable induced-fit rearrangement during serine binding. The loop rearranges...
A new lectin has been purified to homogeneity from the phloem exudate of snake gourd (Trichosanthes anguina) by affinity chromatography on chitin. The snake gourd phloem lectin (SGPL) specifically binds chitooligosaccharides and their inhibitory potency increased with increase in size. PAGE and SDS-PAGE studies indicate that SGPL is a heterodimer, in which the two subunits (48 and 53kDa) are joined...
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