The structure of a d(gcGAACgc) duplex containing two consecutive bulged A residues in both strands suggests a molecular switch

Two octamers with a sequence d(gcGAACgc) are associated to each other to form two types of bulge-containing duplexes different in conformation of the bulged-out adenosine residues, suggesting a molecular switch of the protruded adenosine residues.

Structure of the nondiscriminating aspartyl-tRNA synthetase from the crenarchaeon Sulfolobus tokodaii strain 7 reveals the recognition mechanism for two different tRNA anticodons

The crystal structure of St-AspRS (nondiscriminating type) has been determined at 2.3 Å resolution as the first example of the nondiscriminating type of AspRS from crenarchaea.