Two examples of sugar modifications are the 2′ O-methyl ribonucleotide (2′OMe RNA) and 2′-deoxy-2′-fluoro-ribonucleotide ... Structure-guided chemical modification of guide sequences.

The maturation of tRNAs involves folding into their L shape and nucleotide modifications at several positions. Some modifying enzymes require an L-shaped substrate, and the crystal structure of ...

Abbreviations and technical remarks. -- The evolution of plant stems in the Earth's history -- The structure of the plant body -- Secondary growth: advantages and risks -- Modification of the stem ...