Fig. 3

TEM images of nanostructures. a Nanotubes and nanofibers formed from compounds A (left) and C (right), respectively, stained with uranyl acetate. b TEM images of Ni–NTA Nanogold^® particles bound to the hexa-histidine tagged form I RubisCO and associated with either nanotube A (left) or nanofiber C (right). Images are representative of multiple samples imaged from independent preparations. For better clarity, a close-up view of a single nanostructure is shown to the left of each image