Recently, microRNAs (miRNAs), a novel class of 18-23 nt long non-coding RNAs, have gained attention as another family of molecules involved in cancer development. Upon binding to their target RNAs, miRNAs cause post-transcriptional gene silencing by either cleaving the target mRNA or by inhibiti...
& Chen, L. A new class of solvent-in-salt electrolyte for high-energy rechargeable metallic lithium batteries. Nat. Commun. 4, 1481 (2013). 23. Zhang, T., Liao, K., He, P. & Zhou, H. A self-defense redox mediator for efficient lithium-O2 batteries. Energy Environ. Sci. 9, ...
has led to an extensive comparison of these cations with proton sponges (an important class of proton-sequestering agents in which a captured proton is strongly held between two closely spaced N atoms of a rigid planar cation system, cf. below), and to formulation of geometric criteria useful ...