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.

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Note: Koshland's wife, Marian, is the namesake of the National Academies' Koshland Science Museum in Washington, DC.