Written by Department of Molecular Biology, Princeton University, Molecular Biology Staff Dec. 30, 2019 Professor Nieng Yan and colleagues have developed a new method to make monolayer graphene grids for cryo-EM sample preparation. This new method, aiming to obtain structures of smaller proteins at a higher resolution, leads to a new resolution record for the smallest protein in EM data bank. The work was published in the latest issue of PNAS.