This wooden stand called “Marudai” is used for braiding a Kumihimo, a decorative belt used for tying on a kimono sash. This particular Marudai has the top surface engraved with a part of the codon table in order to translate nucleotide sequences of genes into the pattern of Kumihimo (polypeptide chain). The Marudai and bobbins actually play the role of ribosomes and tRNAs that synthesize proteins by translating mRNA sequences into amino acid sequences. The color of threads had changed depending on amino acids. The pattern of Kumihimo being braided in this drawing was obtained from the sequence of human insulin. Nothing can be as cool as gene sequences, which design the pattern of brilliantly colored Kumihimo.
FoF1 ATPase (also known as ATP synthase) exists in mitochondrial inner membranes and bacterial plasma membranes to synthesize ATP (adenosine triphosphate) by using electrochemical gradient of protons (H+) between inside and outside of the membranes. Fo is integrated in the membranes and thought to have a rotor ring that rotates horizontally. F1 has a dome-like structure comprised of three α and three β subunits that are alternately arranged, which is anchored to the membranes to prevent rotation. Shaft-like γ subunit connects the center of the rotor ring of Fo and F1. As protons flow down the gradient across the membranes through Fo, the rotor ring of Fo and γ rotate, and the spin Force of γ against αβ complex is used to synthesize ATP molecules. In this drawing, a waterwheel (Fo) is rotated by the gradient of water (represents proton gradient), and series of three coins (which represent ATP) are generated from the 'apparatus' (αβ of F1), which is made from six boards being attached to the front side of the waterwheel. A man in the back takes a role to transport protons to the outside of membranes to produce proton gradient.