Stories by Richard E. Dickerson

X-ray analysis of crystals of three types of double-helical DNA molecule leads to the realization that base-sequence information can be stored in the local structure of the helix

The history of this ancient family of electron-transferring proteins suggests that our metabolic ancestors may have been photosynthetic bacteria for which respiration was only a standby energy mechanism

Within one billion years after the formation of the earth 4.6 billion years ago one-celled organisms had evolved out of organic molecules produced nonbiologically in an atmosphere containing no free oxygen

To oxidize food molecules all organisms from yeasts to man require a variant of cytochrome c. Differences in this protein from species to species provide a 1.2-billion-year record of molecular evolution