Max Perutz (1914–2002)
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PERSONAL NEWS NEWS Max Perutz (1914–2002) Max Perutz died on 6 February 2002. He Nobel Prize for Chemistry in 1962 with structure is more relevant now than ever won the Nobel Prize for Chemistry in his colleague and his first student John as we turn attention to the smallest 1962 after determining the molecular Kendrew for their work on the structure building blocks of life to make sense of structure of haemoglobin, the red protein of haemoglobin (Perutz) and myoglobin the human genome and mechanisms of in blood that carries oxygen from the (Kendrew). He was one of the greatest disease.’ lungs to the body tissues. Perutz attemp- ambassadors of science, scientific method Perutz described his work thus: ted to understand the riddle of life in the and philosophy. Apart from being a great ‘Between September 1936 and May 1937 structure of proteins and peptides. He scientist, he was a very kindly and Zwicky took 300 or more photographs in founded one of Britain’s most successful tolerant person who loved young people which he scanned between 5000 and research institutes, the Medical Research and was passionately committed towards 10,000 nebular images for new stars. Council Laboratory of Molecular Bio- societal problems, social justice and This led him to the discovery of one logy (LMB) in Cambridge. intellectual honesty. His passion was to supernova, revealing the final dramatic Max Perutz was born in Vienna in communicate science to the public and moment in the death of a star. Zwicky 1914. He came from a family of textile he continuously lectured to scientists could say, like Ferdinand in The Tempest manufacturers and went to the Theresium both young and old, in schools, colleges, when he had to hew wood: School, named after Empress Maria universities and research institutes. On For some sports are painful Theresa. His parents wanted him to study his death, George Radda of the Medical and the labour law after school and later take over the Research Council said: ‘The world will Delight in them sets off; family business. A schoolmaster kindled some kinds of baseness his interest in chemistry, which he took Are nobly undergone, and up as a subject of study in the University most poor matters of Vienna. He specialized in organic Point to rich ends. This my mean task chemistry, biochemistry and glaciology Would be as heavy to me as odious; but (because he was madly interested in The mistress which I serve skiing). With financial help from his quickens what’s dead father he went to the Cavendish Labo- And makes my labours pleasures. ratory, Cambridge and joined Peterhouse College. He became a research student of The heavens were Zwicky’s mistress, J. D. Bernal, whom Perutz described as and mine was haemoglobin, the protein ‘a restless genius, always searching for of the red blood cells. As part of my some of the very important things to do attempt to solve its structure, I took rather than the work he was doing at that several hundred X-ray diffraction pic- moment’. tures of haemoglobin crystals, each By then Bernal, along with Dorothy taking two hours’ exposure. I took some Crowfoot Hodgkin, had already taken X- of the pictures during World War II, ray diffraction photographs of the pro- when I had to spend nights in the teins, pepsin and insulin. Bernal taught laboratory to be prepared to extinguish him that ‘the riddle of life was to be be mourning the loss of one of the 20th incendiary bombs in the event of a found in the structure of proteins and X- century’s scientific giants. Perutz’s German air raid. I used these nights to ray crystallography was the only way to achievements paved the way for others to get up every two hours, turn my crystal solve it’. unravel the shape of other large, complex by a few degrees, develop the exposed Perutz, on Bernal’s advice, first learnt proteins. His role in the development of films and insert a new pack of films into the techniques of X-ray crystallography the science of molecular biology was the cassette. When all the photographs analysis in the Department of Minera- pivotal, and led directly to the emergence had been taken, the real labour began. logy and Petrology, where he tried his of the modern biotechnology sector and Each of them contained several hundred hand on some silicate structures. After more efficient ways of creating and test- little black spots whose degree of black- this, he turned his attention to proteins ing new drugs. Perutz undertook his ness I had to measure by eye, one by one. and chose to study the structure of work at the Cavendish Laboratories in After six years of this labour, when the haemoglobin as it is a protein abundantly Cambridge, UK, before moving to the data were finally complete, a London found in the human body and was newly set-up Laboratory of Molecular firm processed them with a prehistoric, extremely easy to crystallize. Biology (LMB), which he chaired until mechanical punch card computer that Perutz was the first Chairman (1962– 1979. The LMB became a hotbed of res- produced an output of thousands of 79) of the Medical Research Council earch, producing nine Nobel laureates numbers. These numbers outlined not a Laboratory for Molecular Biology, Cam- since the 1950s. The impact of Perutz’s picture of the structure I was trying to bridge. He was Reader of Chemistry at work remains a foundation on which solve, but a mathematical abstraction of the Davy Faraday Research Laboratory, science is being undertaken today. His it: the directions and lengths of all the 25 London (1956–67). Perutz shared the Nobel prize-winning work on protein million lines between the 5000 atoms in 586 CURRENT SCIENCE, VOL. 82, NO. 5, 10 MARCH 2002 PERSONAL NEWS the haemoglobin molecule radiating from that Crick and Watson (with Maurice of Bijvoet, who had also suggested that a common origin. I scanned the maps Wilkins) won the prize for medicine – structures could be solved using the eagerly for interpretable features and was but in the early 1950s all these men were multi-isomorphous replacement method. elated when they seemed to tell me that unknown, achievements unrecognized, Perutz frankly admitted to her that he the molecule consists simply of bundles seeking how to use the techniques of had missed this in Bijvoet’s paper and he of parallel chains of atoms spaced apart physics and chemistry to understand the was roundly chided by Dorothy Hodgkin at equal intervals.’ nature of biological matter. that ‘when a paper is written by a person ’Shortly after my results appeared in There were other remarkable people in like Bijvoet, you must read each word print, a new graduate student joined me. the group. Hugh Huxley studied under and sentence very very carefully’. Using As his first job, he performed a cal- Perutz using the primitive electron micro- the multiple isomorphous replacement culation which proved that no more than scopes then in existence. With brilliant method and also the anomalous scattering a small fraction of the haemoglobin insight, they decided that Huxley should method (also suggested by Bijvoet), molecule was made up of the bundles of study the muscle, an object ideally Perutz and his group could solve the parallel chains that I had persuaded matched to the powers of the micro- structure of haemoglobin. myself to see, and that my results, the scope. In his doctoral thesis in 1954, When Lawrence Bragg was in Chennai fruits of years of tedious labour, pro- Huxley laid out the basic mechanism of I had invited him home for dinner and I vided no other clue to its structure. It was muscle contraction. And Perutz’s bio- asked how he had started protein crystal- a heartbreaking instance of patience chemical assistant, Vernon Ingram, was lography and molecular biology in Cam- wasted, an ever-present risk in scientific to discover the precise molecular nature bridge. He said: ‘Once a young man with research. That graduate student was of sickle-cell disease a couple of years balding head and high domed forehead Francis Crick, later famous for his part in later – a change of one amino acid in came in with a film in his hand. He said, the solution of the structure of DNA.’ haemoglobin which we now recognize as “I would like you to see the X-ray Perutz communicated ideas with extra- the consequence of a single mutation. photograph that I have taken of haemo- ordinary clarity and simplicity. Though The group first came into prominence globin”. It was an extraordinary photo- he retained a strong accent when speak- with the achievement of the two young graph with clear spots. He also told me ing, his written English was always ele- rebels – Crick and Watson’s analysis of that he had introduced a heavy atom of gant, compelling and stimulating. He DNA in 1953 revealed an exquisite struc- mercury into haemoglobin and crys- seemed to write with a golden pen. He ture whose fascinating implications caught tallized it and he was at present taking had a wonderful way of leading research, the imagination immediately. Meanwhile X-ray photographs. It looked as if the leaving his staff with the feeling they Perutz’s own research (and that of Ken- mercury haemoglobin was isomorphous were free to decide their own way drew) had got stuck. The methods of X- with ordinary haemoglobin. It was then I forward, while he created a vision of the ray crystallography had been used to made up my mind that we should go in long-term goals.