Paul de Kruif
Daniel Koshland Jr., 87; UC Berkeley molecular biologist

Daniel E. Koshland Jr., the UC Berkeley molecular biologist who revised scientists' notions of how enzymes work, remodeled the Berkeley biology department into one of the nation's best and, as editor, refashioned Science into the leading scientific journal in the world, died Monday at the Kaiser Permanente Medical Center in Walnut Creek, Calif., after a massive stroke. He was 87. "Dan Koshland was a rare bird," said Nobel laureate Joseph L. Goldstein of the University of Texas Southwestern Medical Center in Dallas. "His career in science was exemplified by a distinction achieved by only a handful of scientists who are held in universally high esteem by their...