Hugh Huxley (1924-2013) Biophysicist Who Established the Mechanism of Muscle Contraction
COMMENT OBITUARY Hugh Huxley (1924-2013) Biophysicist who established the mechanism of muscle contraction. n a career spanning more than 65 years, salt solutions that extract myosin removed how calcium ions regulated cross-bridge Hugh Huxley achieved his lifelong only the optically dense A-bands (another interaction. In 1970, using intense X-ray ambition of understanding how eureka moment). Their 1953 Nature paper, synchrotron radiation, Huxley began time- Imuscles contract. together with earlier X-ray work, provided resolved studies of cross-bridge movement. Huxley, who died on 25 July after a heart the key evidence for the ‘sliding filament’ Huxley’s move in 1988 to Brandeis Univer- attack, was born in 1924 in Cheshire, UK, model of muscle contraction. sity in Waltham, Massachusetts, as director and studied physics at Christ’s College at the of the Rosenstiel Basic Medical Sciences University of Cambridge, UK. His education Research Center, gave him access to even was interrupted by service in the Royal Air more powerful X-ray sources, particularly Force from 1943 to 1947, testing height-to- at Argonne National Laboratory in Illinois. surface (H2S) radar — a ground-scanning Improved detectors with high-sensitivity system used by bomber aircraft. There, charge-coupled devices (used in digital he learned the importance of doing work cameras) enabled him to collect in milli- himself, and experimenting with electrical seconds data that would have taken hours ADDIS/PHOTOFUSION PETE and mechanical devices became a lifetime when he started out. With the atomic struc- passion. Huxley was able to fix a wildly tures of actin and the myosin cross-bridge, inaccurate version of H2S developed for east along with other evidence, he wrote in the Asia by switching from a voltage-controlled European Journal of Biochemistry in 2004 that display system, in which overheating was a he finally had direct evidence for the type of problem, to a current-controlled system.
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