Maurice Wilkins

Maurice Hugh Frederick Wilkins CBE FRS (15 December 1916 – 5 October 2004)[2] was a New Zealand-born British biophysicist and Nobel laureate whose research spanned multiple areas of physics and biophysics, contributing to the scientific understanding of phosphorescence, isotope separation, optical microscopy, and X-ray diffraction.

The first was in 1948–1950, when his initial studies produced the first clear X-ray images of DNA, which he presented at a conference in Naples in 1951 attended by James Watson.

[8] This image, along with the knowledge that Linus Pauling had proposed an incorrect structure of DNA, "mobilised"[9] Watson and Crick to restart model building.

With additional information from research reports of Wilkins and Franklin, obtained via Max Perutz, Watson and Crick correctly described the double-helix structure of DNA in 1953.

Wilkins continued to test, verify, and make significant corrections to the Watson–Crick DNA model and to study the structure of RNA.

[10] Wilkins, Crick, and Watson were awarded the 1962 Nobel Prize for Physiology or Medicine, "for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material".

[citation needed] Wilkins went to St John's College, Cambridge in 1935; he studied the Natural Sciences Tripos, specialising in Physics, and received a Bachelor of Arts degree in 1938.

[18][19] During World War II Wilkins developed improved radar screens at Birmingham, then worked on isotope separation at the Manhattan Project at the University of California, Berkeley during the years 1944–45.

Randall was negotiating with the Medical Research Council (MRC) to set up a laboratory to apply the experimental methods of physics to problems of biology.

[22] At King's College, Wilkins pursued, among other things, X-ray diffraction work on ram sperm and DNA that had been obtained from calf thymus by the Swiss scientist Rudolf Signer.

He also suggested to Randall that the soon-to-be-appointed Rosalind Franklin should be reassigned from work on protein solutions to join the DNA effort.

Wilkins was away on holiday and missed an initial meeting at which Raymond Gosling stood in for him along with Alex Stokes, who, like Crick, would solve the basic mathematics that make possible a general theory of how helical structures diffract X-rays.

[30] The confusion over Franklin's and Wilkins' roles in relation to the DNA effort (which later developed into considerable tension between them) is clearly attributable to Randall.

He later wrote "My opinion is very clear: that Randall was very wrong to have written to Rosalind telling her that Stokes and I wished to stop our work on DNA, without consulting us.

Secondly, crystallographic evidence showed that the structural units of DNA were progressively separated by the addition of water, leading to the formation of a gel and then a solution.

[34] During 1952, Franklin also refused to participate in molecular modeling efforts and continued to work on step-by-step detailed analysis of her X-ray diffraction data (Patterson synthesis).

[35] Linus Pauling had published a proposed but incorrect structure of DNA, making the same basic error that Watson and Crick had made a year earlier.

[citation needed] In early 1953 Watson visited King's College and Wilkins showed him a high quality image of the B-form X-ray diffraction pattern, now identified as photograph 51, that Franklin had produced in March 1952.

Through Max Perutz, his thesis supervisor, Crick gained access to a progress report from King's College that included useful information from Franklin about the features of DNA she had deduced from her X-ray diffraction data.

The members of the Cambridge and King's College laboratories agreed to report their interlocking work in three papers with continuous pagination in Nature.

The news reached readers of The New York Times the next day; Victor K. McElheny, in researching his biography of Watson, Watson and DNA: Making a Scientific Revolution, found a clipping of a six-paragraph New York Times article written from London and dated 16 May 1953 with the headline "Form of 'Life Unit' in Cell Is Scanned."

[citation needed] Following the initial 1953 series of publications on the double helix structure of DNA, Wilkins continued research as leader of a team that performed a range of meticulous experiments to establish the helical model as valid among different biological species, as well as in living systems, to establish the universality of the double helix structure.

[41] In 1960 he was presented with the American Public Health Association's Albert Lasker Award,[42] and in 1962 he was made a Commander of the Order of the British Empire.

[48] "After the war I wondered what I would do, as I was very disgusted with the dropping of two bombs on civilian centres in Japan," he told Britain's Encounter radio program in 1999.

Monument to Maurice Wilkins, Main Street, Pongaroa, New Zealand
A plaque commemorating Maurice Wilkins and his discovery, beneath the monument, Pongaroa, New Zealand