Modern science, indeed much of the future, will be driven and enabled by the scientific instruments ... in the field of chemistry it is analytical chemistry that focuses most strongly on the ...

The molecule has one shape when ferrying oxygen molecules and a slightly different shape when it is not Its 10,000 atoms are assembled into four chains, each a helix with several bends.

This article was originally published with the title “ The Three-Dimensional Structure of a Protein Molecule ” in Scientific American Magazine Vol. 205 No. 6 (December 1961), p. 96 doi:10.1038 ...