Max Perutz, the father of protein x-ray crystallography, died on February 6 in Cambridge, England, aged 87. Perutz, who was born in Vienna in 1914, came to England in 1936 and used x-rays to study crystals of hemoglobin at the Cavendish Laboratory at Cambridge University. In 1959 he determined the protein’s three-dimensional structure and shared the Nobel Prize three years later with his colleague John Kendrew, who had solved the structure of myoglobin.