The first half of the following video gives the familiar description of what proteins are (chain of amino acids) but with more illustrations and animation that will be helpful. The last half describes roles of protein beyond enzymes, e.g. protein “motors” that perform the work of muscle contraction, etc. It goes on to inspire students with the potential of building real world machines using principles revealed in such molecular motors. (BTW, the “mystery” of protein folding has been at least partially solved with the aid of AI (artificial intelligence). It was Science’s breakthrough of year for 2021)