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Louis Néel

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44-687: Louis Eugène Félix Néel ForMemRS (22 November 1904 – 17 November 2000) was a French physicist born in Lyon who received the Nobel Prize for Physics in 1970 for his studies of the magnetic properties of solids . Néel studied at the Lycée du Parc in Lyon and was accepted at the École Normale Supérieure in Paris . He obtained the degree of Doctor of Science at the University of Strasbourg . He

88-418: A calcium ionophore . The eggs were incubated with the amino acid methionine in which some of the atoms were radioactive isotopes ( radiolabelled ), with samples being taken from the eggs at 10 minute intervals. During the egg development, the radioactive methionine was uptaken into the cells and used to make proteins. From the samples, proteins were precipitated and then separated by mass into distinct bands on

132-763: A Chair (all of whom are Fellows of the Royal Society ). Members of the 10 Sectional Committees change every three years to mitigate in-group bias . Each Sectional Committee covers different specialist areas including: New Fellows are admitted to the Society at a formal admissions day ceremony held annually in July, when they sign the Charter Book and the Obligation which reads: "We who have hereunto subscribed, do hereby promise, that we will endeavour to promote

176-821: A Greek conference in 1966 on the subject, he persuaded the haematologist and geneticist Irving London to allow him to work in his laboratory at Albert Einstein College of Medicine in New York, staying from July to October 1966. His PhD was supervised by Asher Korner and focused on haemoglobin synthesis in intact rabbit reticulocytes (immature red blood cells ), and was awarded in 1968. Following his PhD, Hunt returned to New York to work with London, in collaboration with Nechama Kosower, her husband Edward Kosower, and Ellie Ehrenfeld. While there, they discovered that tiny amounts of glutathione inhibited protein synthesis in reticulocytes and that tiny amounts of RNA killed

220-587: A certain temperature (the Néel temperature ) this behaviour stops. Néel pointed out (1948) that materials could also exist showing ferrimagnetism . Néel has also given an explanation of the weak magnetism of certain rocks, making possible the study of the history of Earth's magnetic field . He is the instigator of the Polygone Scientifique in Grenoble . The Louis Néel Medal , awarded annually by

264-550: A key aspect of cell cycle control, the protein cyclin which is a component of cyclin dependent kinases, demonstrating his ability to grasp the significance of the result outside his immediate sphere of interest". Hunt was knighted in the 2006 Birthday Honours for his service to science. Hunt is married to the immunologist Mary Collins , who was provost of the Okinawa Institute of Science and Technology in Japan, and

308-404: A resolving gel mat, which were then observed by photographic film that could detect the radioactivity emitted by the proteins. Observing the changes in the bands across the samples, Hunt noticed that one of the proteins rose in abundance before disappearing during the mitosis phase of cell division. Hunt named the protein "cyclin" based on his observation of the cyclical changes in its levels. It

352-523: Is a lifelong advocate for scientific research. After winning the Nobel Prize in 2001, he spent much of his time traveling the world, talking to both popular and specialist audiences. In these talks he offered his characteristic perspective on inquiry, which emphasizes the importance of having fun and being lucky. He also believes that science benefits when power is given to young people, himself having been given full autonomy and authority at age 27. At

396-984: Is a member of the Advisory Council for the Campaign for Science and Engineering . He has served on the Selection Committee for the Shaw Prize in Life Science and Medicine. In 2010, Hunt joined the Academic Advisory Board of the Austrian think tank Academia Superior, Institute for Future Studies. Hunt is a highly regarded colleague and mentor in the research community. During his career he has supervised numerous PhD students including Hugh Pelham and Jonathon Pines . In addition to his scientific contributions, Hunt

440-1326: Is a significant honour. It has been awarded to many eminent scientists throughout history, including Isaac Newton (1672), Benjamin Franklin (1756), Charles Babbage (1816), Michael Faraday (1824), Charles Darwin (1839), Ernest Rutherford (1903), Srinivasa Ramanujan (1918), Jagadish Chandra Bose (1920), Albert Einstein (1921), Paul Dirac (1930), Winston Churchill (1941), Subrahmanyan Chandrasekhar (1944), Prasanta Chandra Mahalanobis (1945), Dorothy Hodgkin (1947), Alan Turing (1951), Lise Meitner (1955), Satyendra Nath Bose (1958), and Francis Crick (1959). More recently, fellowship has been awarded to Stephen Hawking (1974), David Attenborough (1983), Tim Hunt (1991), Elizabeth Blackburn (1992), Raghunath Mashelkar (1998), Tim Berners-Lee (2001), Venki Ramakrishnan (2003), Atta-ur-Rahman (2006), Andre Geim (2007), Bai Chunli (2014), James Dyson (2015), Ajay Kumar Sood (2015), Subhash Khot (2017), Elon Musk (2018), Elaine Fuchs (2019) and around 8,000 others in total, including over 280 Nobel Laureates since 1900. As of October 2018 , there are approximately 1,689 living Fellows, Foreign and Honorary Members, of whom 85 are Nobel Laureates. Fellowship of

484-737: Is confirmed by the Council in April, and a secret ballot of Fellows is held at a meeting in May. A candidate is elected if they secure two-thirds of votes of those Fellows voting. An indicative allocation of 18 Fellowships can be allocated to candidates from Physical Sciences and Biological Sciences; and up to 10 from Applied Sciences, Human Sciences and Joint Physical and Biological Sciences. A further maximum of six can be 'Honorary', 'General' or 'Royal' Fellows. Nominations for Fellowship are peer reviewed by Sectional Committees, each with at least 12 members and

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528-565: Is mediated by reversible phosphorylation of initiation factor eIF-2 by two distinct protein kinases and they elucidated the unexpected roles of thioredoxin and thioredoxin reductase in protein synthesis . With Ruderman and Rosenthal, he demonstrated selective translational control of mRNA in early clam embryos. This led to Hunt's discovery of cyclin as a protein which is selectively destroyed in mitosis. He subsequently cloned and sequenced cyclin cDNA from sea urchins and frogs and showed by elegant mRNA ablation experiments that cyclin translation

572-448: Is necessary for mitosis in frog embryos. He has also shown that cyclin is a subunit of the mitosis-promoting factor which regulates entry into mitosis. His discovery and characterization of cyclin are major contributions to our knowledge of cell cycle regulation in eukaryotic cells. Hunt was elected a fellow of the UK's Academy of Medical Sciences (FMedSci) in 1998, and a foreign associate of

616-421: Is nominated by two Fellows of the Royal Society (a proposer and a seconder), who sign a certificate of proposal. Previously, nominations required at least five fellows to support each nomination by the proposer, which was criticised for supposedly establishing an old boy network and elitist gentlemen's club . The certificate of election (see for example ) includes a statement of the principal grounds on which

660-592: The European Geophysical Society , is named in Néel's honour. Néel died at Brive-la-Gaillarde on 17 November 2000 at the age 95, just 5 days short of his 96th birthday. Néel received numerous awards and honours for his work including: Owing to his involvement in national defense, particularly through research in the protection of warships by demagnetization against magnetic mines, he received numerous distinctions: Foreign Member of

704-426: The post-nominal letters FRS . Every year, fellows elect up to ten new foreign members. Like fellows, foreign members are elected for life through peer review on the basis of excellence in science. As of 2016 , there are around 165 foreign members, who are entitled to use the post-nominal ForMemRS . Honorary Fellowship is an honorary academic title awarded to candidates who have given distinguished service to

748-569: The CDK function. He showed that cyclins are degraded periodically at each cell division, a mechanism proved to be of general importance for cell cycle control. In 2003, Hunt was made an honorary Fellow of the Royal Society of Edinburgh (HonFRSE). In 2006, he was awarded the Royal Society 's Royal Medal , two of which are presented annually for "the most important contributions to the advancement of natural knowledge", in his case for "discovering

792-551: The Royal Society Fellowship of the Royal Society ( FRS , ForMemRS and HonFRS ) is an award granted by the Fellows of the Royal Society of London to individuals who have made a "substantial contribution to the improvement of natural knowledge , including mathematics , engineering science , and medical science ". Fellowship of the Society, the oldest known scientific academy in continuous existence,

836-439: The Royal Society has been described by The Guardian as "the equivalent of a lifetime achievement Oscar " with several institutions celebrating their announcement each year. Up to 60 new Fellows (FRS), honorary (HonFRS) and foreign members (ForMemRS) are elected annually in late April or early May, from a pool of around 700 proposed candidates each year. New Fellows can only be nominated by existing Fellows for one of

880-663: The Society, we shall be free from this Obligation for the future". Since 2014, portraits of Fellows at the admissions ceremony have been published without copyright restrictions in Wikimedia Commons under a more permissive Creative Commons license which allows wider re-use. In addition to the main fellowships of the Royal Society (FRS, ForMemRS & HonFRS), other fellowships are available which are applied for by individuals, rather than through election. These fellowships are research grant awards and holders are known as Royal Society Research Fellows . In addition to

924-570: The US National Academy of Sciences in 1999. In 2001, he was awarded the Nobel Prize in Physiology or Medicine with Leland Hartwell and Paul Nurse for their discoveries regarding cell cycle regulation by cyclin and cyclin-dependent kinases . The three laureates are cited "for their discoveries of key regulators of the cell cycle," while Hunt in particular is awarded for his discovery of cyclins, proteins that regulate

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968-733: The World Conference of Science Journalists in Seoul in June 2015, Hunt gave a impromptu toast at a lunch for female journalists and scientists. As recounted by an EU official, Hunt said: It's strange that such a chauvinist monster like me has been asked to speak to women scientists. Let me tell you about my trouble with girls. Three things happen when they are in the lab: you fall in love with them, they fall in love with you, and when you criticise them they cry. Perhaps we should make separate labs for boys and girls? Now, seriously, I'm impressed by

1012-544: The award of Fellowship (FRS, HonFRS & ForMemRS) and the Research Fellowships described above, several other awards, lectures and medals of the Royal Society are also given. Tim Hunt Sir Richard Timothy Hunt (born 19 February 1943) is a British biochemist and molecular physiologist . He was awarded the 2001 Nobel Prize in Physiology or Medicine with Paul Nurse and Leland H. Hartwell for their discoveries of protein molecules that control

1056-529: The backlash against him was disproportionate. Hunt was elected a member of the European Molecular Biology Organization (EMBO) in 1978, serving as a member of the organisation's Fellowship Committee 1990–1993, its Meeting Committee 2008–2009, and its governing body, the Council, 2004–2009. He was elected a Fellow of the Royal Society (FRS) in 1991 , his certificate of election reads: Distinguished for his studies of

1100-612: The cause of science, but do not have the kind of scientific achievements required of Fellows or Foreign Members. Honorary Fellows include the World Health Organization's Director-General Tedros Adhanom Ghebreyesus (2022), Bill Bryson (2013), Melvyn Bragg (2010), Robin Saxby (2015), David Sainsbury, Baron Sainsbury of Turville (2008), Onora O'Neill (2007), John Maddox (2000), Patrick Moore (2001) and Lisa Jardine (2015). Honorary Fellows are entitled to use

1144-571: The concept of short linear motifs , parts of protein sequences that mediate interactions with other proteins. In 1993, the book The Cell Cycle: An Introduction , which Hunt co-authored along with Andrew Murray, was published by Oxford University Press . Hunt had his own laboratory at the Clare Hall Laboratories until the end of 2010, and remains an Emeritus Group Leader at the Francis Crick Institute . He

1188-491: The control of protein synthesis in animal cells and for the discovery of cyclin, a protein which regulates the eukaryotic cell cycle. Together with Jackson and their students, he defined steps in formation of the initiation complex in protein synthesis, showing that the 40S ribosomal subunit binds initiator tRNA before it binds mRNA , and that this step was the target of inhibitors such as double-stranded RNA or haem deficiency. They showed that inhibition of protein synthesis

1232-624: The cyclic activation and inactivation of MPF being a key element in regulating and progressing the cell cycle. In 1990, he began work at Imperial Cancer Research Fund , later known as the Cancer Research UK London Research Institute , in the United Kingdom, where his work focused on understanding on what makes cell go cancerous, that is: proliferate uncontrollably, with the ordinary inhibitory signals switched off. That same year, Hunt defined

1276-574: The division of cells. While studying fertilized sea urchin eggs in the early 1980s, Hunt discovered cyclin , a protein that cyclically aggregates and is depleted during cell division cycles. Hunt was born on 19 February 1943 in Neston , Cheshire , to Richard William Hunt , a lecturer in palaeography in Liverpool, and Kit Rowland, daughter of a timber merchant. After the death of both his parents, Hunt found his father had worked at Bush House , then

1320-486: The economic development of Korea. And women scientists played, without a doubt, an important role in it. Science needs women, and you should do science, despite all the obstacles, and despite monsters like me. Parts of the remarks were widely publicised on social media due to their perceived sexist nature, resulting in an intense online backlash, which some described as an act of public shaming . Hunt resigned from his honorary professorship at University College London after

1364-429: The embryo cells was well suited to microscopic study. It was at Woods Hole around July 1982, using Arbacia sea urchin eggs as his model organism, that he discovered cyclin proteins. Cyclins play a key role in regulating the cell-division cycle . Hunt was observing the eggs undergo cell division after fertilization. The study also included a control group where the eggs had been activated without fertilization by

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1408-464: The fellowships described below: Every year, up to 52 new fellows are elected from the United Kingdom, the rest of the Commonwealth of Nations , and Ireland, which make up around 90% of the society. Each candidate is considered on their merits and can be proposed from any sector of the scientific community. Fellows are elected for life on the basis of excellence in science and are entitled to use

1452-540: The good of the Royal Society of London for Improving Natural Knowledge, and to pursue the ends for which the same was founded; that we will carry out, as far as we are able, those actions requested of us in the name of the Council; and that we will observe the Statutes and Standing Orders of the said Society. Provided that, whensoever any of us shall signify to the President under our hands, that we desire to withdraw from

1496-691: The headquarters of BBC World Service radio, most likely in intelligence, although it is not known what he actually did. In 1945, Richard became Keeper of the Western Manuscripts at the Bodleian Library , and the family relocated to Oxford . At the age of eight, Hunt was accepted into the Dragon School , where he first developed an interest in biology thanks to his science teacher, the German educator Gerd Sommerhoff . When he

1540-514: The post nominal letters HonFRS . Statute 12 is a legacy mechanism for electing members before official honorary membership existed in 1997. Fellows elected under statute 12 include David Attenborough (1983) and John Palmer, 4th Earl of Selborne (1991). The Council of the Royal Society can recommend members of the British royal family for election as Royal Fellow of the Royal Society . As of 2023 there are four royal fellows: Elizabeth II

1584-552: The proposal is being made. There is no limit on the number of nominations made each year. In 2015, there were 654 candidates for election as Fellows and 106 candidates for Foreign Membership. The Council of the Royal Society oversees the selection process and appoints 10 subject area committees, known as Sectional Committees, to recommend the strongest candidates for election to the Fellowship. The final list of up to 52 Fellowship candidates and up to 10 Foreign Membership candidates

1628-407: The study of mitosis . The location provided a ready supply of surf clams ( Spisula solidissima ) and sea urchins ( Arbacia punctulata ) amongst the reefs and fishing docks, and it was these invertebrates that were particularly useful for the study of the synthesis of proteins in embryogenesis, as the embryos were simply generated with the application of filtered sea water, and the transparency of

1672-626: The synthesis altogether. After returning to Cambridge, he again began work with Tony Hunter and Richard Jackson , who had discovered the RNA strand used to start haemoglobin synthesis. After 3–4 years, the team discovered at least two other chemicals acting as inhibitors. Hunt regularly spent summers working at the Marine Biological Laboratory at Woods Hole, Massachusetts , which was popular with scientists for its advanced summer courses, and in particular, with those interested in

1716-451: The university told him to; he also resigned from several other research positions. Hunt apologised and stated that the remarks were in jest. He said that they had been taken out of context, as the remarks had originally been reported without the words starting with "now seriously". Hunt also stated he "did mean the part about having trouble with girls". Some public figures and scientists, including some who had worked with Hunt, suggested that

1760-527: Was corecipient (with the Swedish astrophysicist Hannes Alfvén ) of the Nobel Prize for Physics in 1970 for his pioneering studies of the magnetic properties of solids . His contributions to solid state physics have found numerous useful applications, particularly in the development of improved computer memory units. About 1930 he suggested that a new form of magnetic behavior might exist; called antiferromagnetism , as opposed to ferromagnetism . Above

1804-521: Was fourteen, he moved to Magdalen College School, Oxford , becoming even more interested in science and studying subjects such as chemistry and zoology. In 1961, he was accepted into Clare College, Cambridge to study Natural Sciences , graduating in 1964 and immediately beginning work in the university Department of Biochemistry under Asher Korner . There, he worked with scientists such as Louis Reichardt and Tony Hunter . A 1965 talk by Vernon Ingram interested him in haemoglobin synthesis , and at

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1848-571: Was initially unsure of how cyclins functioned in regard to cell division. This was clarified in later papers in the 1980s and 1990s, some of which Hunt co-authored. These again utilized sea urchin eggs as well as eggs of the frog Xenopus , and demonstrated that cyclins were present in the cells of most organisms, and combine with kinase enzymes (specifically cyclin-dependent kinases ) to form maturation-promoting factor (MPF). MPF has previously been identified in 1971 by Yoshio Masui and Clement Markert from Xenopus eggs. MPF induces mitosis, with

1892-514: Was later discovered that cyclins are continuously synthesised, but are specifically targeted for proteolysis during mitosis. The discovery of cyclins was reported in a study published in Cell in 1983. Hunt later demonstrated that cyclins were also present in another sea urchin, Lytechinus pictus , as well as in Spisula clams. Hunt was aware that the discovery of cyclins was significant, but

1936-421: Was not a Royal Fellow, but provided her patronage to the society, as all reigning British monarchs have done since Charles II of England . Prince Philip, Duke of Edinburgh (1951) was elected under statute 12, not as a Royal Fellow. The election of new fellows is announced annually in May, after their nomination and a period of peer-reviewed selection. Each candidate for Fellowship or Foreign Membership

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