Multiferroic hydrogenated graphene bilayer.

We investigated the multiferroic properties of a hydrogenated graphene bilayer using first-principles calculations. The proposed material is composed of one fully hydrogenated and one semi-hydrogenated graphene monolayer. Inside the van der Waals gap, hydrogen atoms are only adsorbed on either the top or the bottom layer of graphene, thus breaking the centrosymmetry.

The cysteine-free single mutant C32S of APEX2 is a highly expressed and active fusion tag for proximity labeling applications.

APEX2, an engineered ascorbate peroxidase for high activity, is a powerful tool for proximity labeling applications. Owing to its lack of disulfides and the calcium-independent activity, APEX2 can be applied intracellularly for targeted electron microscopy imaging or interactome mapping when fusing to a protein of interest. However, APEX2 fusion is often deleterious to the protein expression, which seriously hampers its wide utility.