One well-known example of such a functional nanomachine is myoglobin — an important oxygen-carrying protein in humans that is based on a single polypeptide chain 1. In fact, the 3D structure of ...

Aminoacyl-tRNA synthetase aminoacylates the cognate transfer RNA (tRNA) with the cognate amino acid, which will be incorporated into the nascent polypeptide chain on the ribosome. In addition to ...