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Roger Yonchien Tsien (pronounced /tʃɛn/, "CHEN"; February 1, 1952 – August 24, 2016) was an American biochemist. He was a professor of chemistry and biochemistry at the University of California, San Diego[7] and was awarded the Nobel Prize in Chemistry in 2008 for his discovery and development of the green fluorescent protein, in collaboration with organic chemist Osamu Shimomura and neurobiologist Martin Chalfie.[8][9][10] Tsien was also a pioneer of calcium imaging.[9][11]
Early life
Paul Krugman, Roger Tsien, Martin Chalfie, Osamu Shimomura, Makoto Kobayashi and Toshihide Masukawa, Nobel Prize Laureates 2008, at a press conference at the Swedish Academy of Science in Stockholm.

Tsien was born to a Chinese American family in New York, in 1952.[12] He grew up in Livingston, New Jersey[12] and attended Livingston High School.[13] Tsien traces his family ancestry to Hangzhou, China. His father Hsue-Chu Tsien, an MIT and Shanghai Chiao Tung University alumnus, was a mechanical engineer and had excelled academically, graduating at the top of his university class.

Tsien suffered from asthma as a child, and as a result, he was often indoors. He spent hours conducting chemistry experiments in his basement laboratory. When he was 16, he won first prize in the nationwide Westinghouse Talent Search with a project investigating how metals bind to thiocyanate.[12]
Education

Tsien attended Harvard College on a National Merit Scholarship, where he was elected to Phi Beta Kappa as a junior.[14] He graduated summa cum laude with a Bachelor of Arts in chemistry and physics in 1972.[15] According to his freshman-year roommate, economist and Iowa politician Herman Quirmbach, "It's probably not an exaggeration to say he's the smartest person I ever met ... [a]nd I have met a lot of brilliant people."[16]

After completing his bachelor's degree, Tsien joined the Physiological Laboratory at the University of Cambridge in Cambridge, England with the aid of a Marshall Scholarship, and resided at Churchill College, Cambridge.[17] He received his Ph.D. in physiology in 1977 for research on The Design and Use of Organic Chemical Tools in Cellular Physiology [4] formally supervised by Richard Adrian in the department of physiology and assisted by Andy Holmes, Gerry Smith and Jeremy Sanders in the department of chemistry.[17]
Research and career

Following his Ph.D., Tsien was a research fellow at Gonville and Caius College, Cambridge from 1977 to 1981.[17] He was appointed to the faculty at the University of California, Berkeley, from 1982 to 1989.[18] Beginning in 1989, he worked at the University of California, San Diego, as professor of pharmacology and professor of chemistry and biochemistry,[7] and as an investigator of the Howard Hughes Medical Institute.[19][20]

Tsien contributed to the fields of cell biology and neurobiology by discovering genetically programmable fluorescent tags, thereby allowing scientists to watch the behavior of molecules in living cells in real time. He also developed fluorescent indicators of calcium ions and other ions important in biological processes.
GFP Movie showing entire structure and zoom in to fluorescent chromophore. Movie created by Erik A. Rodriguez with UCSF Chimera from PDB: 1EMA in memory of Roger Y. Tsien for the Birch Aquarium.

In 2004, Tsien was awarded the Wolf Prize in Medicine "for his seminal contribution to the design and biological application of novel fluorescent and photolabile molecules to analyze and perturb cell signal transduction."[21]

In 2008, Tsien shared the Nobel Prize in Chemistry with Osamu Shimomura and Martin Chalfie for "the green fluorescent protein: discovery, expression and development."[8][22]
Fluorescent proteins

The multicolored fluorescent proteins developed in Tsien's lab are used by scientists to track where and when certain genes are expressed in cells or in whole organisms. Typically, the gene coding for a protein of interest is fused with the gene for a fluorescent protein, which causes the protein of interest to glow inside the cell when the cell is irradiated with a suitable wavelength of light and allows microscopists to track its location in real time. This is such a popular technique that it has added a new dimension to the fields of molecular biology, cell biology, and biochemistry.[9]

Since the discovery of the wild type GFP, numerous different mutants of GFP have been engineered and tested.[23] The first significant leap forward was a single point mutation (S65T) reported by Tsien in 1995 in Nature.[24] This mutation dramatically improved the fluorescent (both intensity and photostability) and spectral characteristics of GFP. A shift of the major excitation peak to 488 nm with the emission peak staying at 509 nm thus can be clearly observed, which matched very well the spectral characteristics of commonly available FITC facilities. All these then largely amplified the practicality of using GFP by scientists in their research. Tsien mainly contributed to much of our understanding of how GFP works and for developing new techniques and mutants of GFP.

Former trainees of Roger Y. Tsien include Atsushi Miyawaki and Alice Y. Ting.

Timelines of GFP-development involved by Tsien:[22]

1994: Tsien showed the mechanism that GFP chromophore is formed in a chemical reaction which requires oxygen but without help from the other proteins.
1994–1998: Tsien and collaborators made various GFP mutants by genetic modification and structural tweaking. Newly created variants of GFP can shine more brightly and show different colours, such as yellow, cyan, and blue.
2000–2002: Tsien produced monomeric variants of DsRED, which can glow in shades of red, pink, and orange. Remarkably, since then complicated marcromolecular networks of living organisms can be labelled or marked by using "all the colours of the rainbow".

Other detailed highlights involved by Tsien:[25]

2002: The critical structural difference between GFP and DsRed was revealed. One extra double-bond in the chromophore of DsRed extends its conjugation thus causes the red-shift.
2002: Monomeric DsRed (mRFP) was first developed.
2004: New "fruit" FPs were generated (by in vitro and in vivo directed evolutions).

In 2009, a new kind of Infrared Fluorescent Protein (IFP) was developed by Tsien's group, and further reported and described by Science. The new IFPs are developed from bacterial phytochromes instead of from multicellular organism like jellyfish. Under normal conditions, bacterial phytochromes absorb light for signaling instead of fluorescence, but they can be turned fluorescent after deleting some of the signaling parts by genetic means such as site-directed mutagenesis. In order to fluoresce, IFPs require an exogenous chromophore, biliverdin.[26]

In 2016, a new class of fluorescent protein was evolved from a cyanobacterial (Trichodesmium erythraeum) phycobiliprotein, α-allophycocyanin, and named small ultra red fluorescent protein (smURFP). smURFP autocatalytically self-incorporates the chromophore biliverdin without the need of an external protein, known as a lyase.[27] Jellyfish- and coral-derived fluorescent proteins require oxygen and produce a stoichiometric amount of hydrogen peroxide upon chromophore formation.[28] smURFP does not require oxygen or produce hydrogen peroxide and uses the chromophore, biliverdin. smURFP has a large extinction coefficient (180,000 M−1 cm−1) and has a modest quantum yield (0.20), which makes it comparable biophysical brightness to eGFP and ~2-fold brighter than most red or far-red fluorescent proteins derived from coral. smURFP spectral properties are similar to the organic dye Cy5.[27]
Next generation sequencing

Roger Tsien had built the foundation of next generation sequencing technology that is widely used today. On 26 October 1990, Roger Tsien et al. filed a patent of stepwise ("base-by-base") sequencing with removable 3' blockers on DNA arrays. Illumina integrated this concept with DNA cloning for their next generation sequencer.[29]
Calcium imaging

Tsien was a pioneer of calcium imaging and known for developing various dyes which become fluorescent in the presence of particular ions such as calcium.[9][11] One such dye, fura-2, is widely used to track changes of calcium concentration within cells. indo-1 and fluo-3, other popular calcium indicators, were also developed by Tsien's group in 1985 and 1989 respectively. He has also developed fluorescent indicators for other ions such as magnesium, zinc, copper, iron, lead, cadmium, aluminum, nickel, cobalt, and mercury.[30]

Aequorin is also a useful tool to indicate calcium level inside cells; however, it has some limitations, primarily is that its prosthetic group coelenterazine is consumed irreversibly when emits light, thus requires continuous addition of coelenterazine into the media. To overcome such issues, Tsien's group also developed the calmodulin-based sensor, named Cameleon.[31]
FlAsH-EDT2

FlAsH-EDT2 is a biochemical method for specific covalent labeling of proteins harboring a tetracysteine motif (CCXXCC). It's a method based on recombinant protein molecules, and was developed by Tsien and his colleagues in 1998.[32]

"FLASH-EDT2": Fluorescein arsenical helix binder, bis-EDT adduct,
"EDT": 1,2-ethanedithiol.

Fluorescence-assisted cancer surgery

Mouse experiments by Tsien's group suggest that cancer surgery can be guided and assisted by fluorescent peptides. The peptides are used as probes, and are harmless to living tissues and organs. Their lifetime in the body is only 4 or 5 days. Clinical trials are awaited.[33]
Industrial activities

Tsien was also a notable biochemical inventor and held or coheld about 100 patents till 2010. In 1996, Tsien cofounded the Aurora Biosciences Corporation, which went public in 1997. In 2001, Aurora was acquired by the Vertex Pharmaceuticals. Similarly, Tsien was also a scientific cofounder of Senomyx in 1999.[12][34]

Tsien also promoted science education to promising young scientists through the first-ever San Diego Science Festival Lunch with a Laureate Program.[35]
Personal life

Tsien is a 34th-generational descendant of the King of Wuyüeh, Tsien Liu.[36] Tsien's parents Hsue-Chu Tsien and Yi-Ying Li (李懿穎) came from Hangzhou and Beijing, respectively.

Tsien had a number of engineers in his extended family, including his father Hsue-Chu Tsien who was an MIT-educated mechanical engineer and his mother's brothers Y. T. Li (李耀滋) and Shihying Lee (李詩穎), who were engineering professors at MIT. Tsien's mother Yi-Ying Li was a nurse.[15] The famous rocket scientist Tsien Hsue-shen, regarded as the cofounding father of the Jet Propulsion Laboratory of the California Institute of Technology and, later, the director of the Chinese ballistic-missile and space programs, is a cousin of Tsien's father.[37]

Tsien was the younger brother of Richard Tsien, a renowned neurobiologist currently at New York University,[38] and Louis Tsien, a software engineer. Tsien, who called his own work molecular engineering, once said, "I'm doomed by heredity to do this kind of work."[39]

He was married to Wendy Globe.[5]
Death

Tsien died on August 24, 2016.[40] Although the specific cause of death was not disclosed, it was reported that he died while on a bike trail in Eugene, Oregon.[41] Prior to his death, Tsien had survived cancer and suffered a stroke in 2013.[42][43]

"He was ahead of us all," said Tsien's wife, Wendy. "He was ever the adventurer, the pathfinder, the free and soaring spirit. Courage, determination, creativity and resourcefulness were hallmarks of his character. He accomplished much. He will not be forgotten."[15]
Awards and honors

Roger Y. Tsien has received numerous honors and awards in his life, including:

National 1st Prize, Westinghouse Science Talent Search (1968)
National Merit Scholarship, US (1968)
Detur Prize, Harvard College (1969)
Marshall Scholarship, British government (1972)
Comyns Berkeley Research Fellowship, Gonville and Caius College, Cambridge (1977)
Gedge Prize, University of Cambridge (1978)
Searle Scholar, Searle Scholar program (1983)
Lamport Prize, New York Academy of Sciences (1986)
Javits Neuroscience Investigator Award, National Institute of Neurological Disorders and Stroke (1989)
Young Scientist Award, Passano Foundation (1991)
W. Alden Spencer Award in Neurobiology, Columbia University (1991)
Artois-Baillet-Latour Health Prize, Belgium (1995)
Gairdner Foundation International Award, Canada (1995)
Basic Research Prize, American Heart Association (1995)
Elected to the United States Institute of Medicine (1995)
Doctorate honoris causa, Katholieke Universiteit Leuven, Belgium (1995)
Faculty Research Lecturer, UC San Diego (1997)
Elected to the American Academy of Arts and Sciences (1998)
Elected to the United States National Academy of Sciences (1998)
Award for Innovation in High Throughput Screening, Society for Biomolecular Screening (1998)
Pearse Prize, Royal Microscopical Society (2000)
ACS Award for Creative Invention, American Chemical Society (2002)
Christian B. Anfinsen Award, Protein Society (2002)
Heineken Prize for Biochemistry and Biophysics, Royal Netherlands Academy of Arts and Sciences (2002)
Max Delbrück Medal, Max Delbrück Centrum für Molekulare Medizin, Berlin (2002)[44]
Wolf Prize in Medicine, Israel (2004)
Keio Medical Science Prize, Japan (2004)
UCSD Chancellor's Associates Award for Excellence in Science & Engineering Research, UC San Diego (2004)
Perl-UNC Neuroscience Prize, University of North Carolina (2004)
Associate EMBO Member of the European Molecular Biology Organization 2005.[3]
J.Allyn Taylor International Prize in Medicine, Robarts Research Institute, Canada (2005)
ABRF Award, Association of Biomolecular Resource Facilities (2006)
Lewis S. Rosenstiel Award for Distinguished Work in the Basic Medical Sciences, Brandeis University (2006)[45]
Elected a Foreign Member of the Royal Society (ForMemRS) in 2006[1][46]
BioPharma Leadership Award, the 6th Annual San Diego BioPharma Conference, San Diego (2007)
US Department of Defense (DoD) Breast Cancer Innovator Award
Nobel Prize in Chemistry, Sweden (2008)[8]
E.B. Wilson Medal, American Society for Cell Biology (2008)
Honorary Fellow of the Royal Society of Chemistry (HonFRSC), UK (2008)[47]
Honorary Academician, Academia Sinica (2008)[48]
February 18, 2009, Roger Tsien Day, in the City of San Diego, California, US
Distinguished Science and Technology Award, The 2009 Asian American Engineers of the Year (AAEoY) Award (April 2009)[49]
Lifetime Innovation Award, UC San Diego (May 20, 2009)[50]
AHA Distinguished Scientists, American Heart Association (2009)
Molecular Imaging Achievement Award, Society of Molecular Imaging (2009)
Doctor of Science honoris causa, The University of Hong Kong (2009)[51]
Doctor of Science honoris causa, Chinese University of Hong Kong (2009)[52]
General President Gold Medal, the 97th Indian Science Congress, India (January 3, 2010)[53]
Spiers Memorial Award, Royal Society of Chemistry, UK (2010)[54]
Golden Goose Award (2012)[55]
Golden Plate Award of the American Academy of Achievement (2012)[56]

Named lectures and lectureships

Bowditch Lectureship, American Physiological Society (1992)[57]
Hans L. Falk Memorial Lectureship, National Institute of Environmental Health Sciences (1993)
Quastel Lectureship, Hebrew University of Jerusalem (1994)
President's Lectureship, American Thoracic Society (1994)
Roger Eckert Memorial Lecture, Göttingen Neurobiology Conference of the German Neuroscience Society (1995)
Melvin Calvin Lectureship, UC Berkeley (1999)
Herbert Sober Lectureship, American Society for Biochemistry and Molecular Biology (2000)
Keith Porter Lecture, American Society for Cell Biology (2003)
Konrad Bloch Lectureship, Harvard University (2003)
Grass Foundation Lectureship, Society for Neuroscience (2004)
The 1st Academia Sinica Lecturer (the highest honor of the academy), Dec 2009[58][59]
The 2010 National Lecturer of the Biophysical Society (the highest honor of the society)[60]
The 2011 UCL Prize Lecture in Clinical Science (University College, London)[61]

See also

Quyen T. Nguyen

References

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All text published under the heading 'Biography' on Fellow profile pages is available under Creative Commons Attribution 4.0 International License." --"Royal Society Terms, conditions and policies". Archived from the original on September 25, 2015. Retrieved March 9, 2016.

The Wolf Prize in Medicine in 2004 (detail)
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Xiaokun Shu; Antoine Royant; Michael Z. Lin; Todd A. Aguilera; Varda Lev-Ram; Paul A. Steinbach; Roger Y. Tsien (2009). "Mammalian Expression of Infrared Fluorescent Proteins Engineered from a Bacterial Phytochrome". Science. 324 (5928): 804–07. Bibcode:2009Sci...324..804S. doi:10.1126/science.1168683. PMC 2763207. PMID 19423828.
Rodriguez, Erik A.; Tran, Geraldine N.; Gross, Larry A.; Crisp, Jessica L.; Shu, Xiaokun; Lin, John Y.; Tsien, Roger Y. (August 1, 2016). "A far-red fluorescent protein evolved from a cyanobacterial phycobiliprotein". Nature Methods. 13 (9): 763–9. doi:10.1038/nmeth.3935. ISSN 1548-7105. PMC 5007177. PMID 27479328.
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"Espacenet – Bibliographic data". worldwide.espacenet.com.
"Fluorescent Indicators for Zn2+ and Other Metal Ions—Section 19.7 – US".
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B. Albert Griffin; Stephen R. Adams; Roger Y. Tsien (1998). "Specific Covalent Labeling of Recombinant Protein Molecules Inside Live Cells". Science. 281 (5374): 269–72. Bibcode:1998Sci...281..269G. doi:10.1126/science.281.5374.269. PMID 9657724.
"PNAS: Fluorescence + MR imaging probe can guide cancer surgery" (php). PNAS. March 4, 2010. Retrieved March 11, 2010.
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San Diego Science Festival Lunch with a Laureate
诺贝尔化学奖得主钱永健系吴越国王34世孙 [Nobel Chemistry Prize winner Roger Tsien is the 34th-generational descendant of the King of Wuyue] (in Chinese). Sina.com. October 9, 2008. Retrieved October 9, 2008.
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Ma, Huan; Li, Boxing; Tsien, Richard W. (2015). "Distinct roles of multiple isoforms of CaMKII in signaling to the nucleus". Biochimica et Biophysica Acta (BBA) – Molecular Cell Research. 1853 (9): 1953–1957. doi:10.1016/j.bbamcr.2015.02.008. ISSN 0167-4889. PMC 4522395. PMID 25700840.
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本院邀請諾貝爾化學獎得主錢永健教授12月蒞臨「中央研究院講座」演講 (in Chinese). Academia Sinica. December 11, 2009. Retrieved December 27, 2009.
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"UCL 2011 Prize Lecture in Clinical Science with Roger Tsien | UCL Events".

External links

Media related to Roger Tsien at Wikimedia Commons
Roger Y. Tsien on Nobelprize.org Edit this at Wikidata

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University of California, San Diego

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Laureates of the Wolf Prize in Medicine

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Heineken Prizes

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2008 Nobel Prize laureates

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Laureates of the Nobel Prize in Chemistry
1901–1925

1901: Jacobus van 't Hoff 1902: Emil Fischer 1903: Svante Arrhenius 1904: William Ramsay 1905: Adolf von Baeyer 1906: Henri Moissan 1907: Eduard Buchner 1908: Ernest Rutherford 1909: Wilhelm Ostwald 1910: Otto Wallach 1911: Marie Curie 1912: Victor Grignard / Paul Sabatier 1913: Alfred Werner 1914: Theodore Richards 1915: Richard Willstätter 1916 1917 1918: Fritz Haber 1919 1920: Walther Nernst 1921: Frederick Soddy 1922: Francis Aston 1923: Fritz Pregl 1924 1925: Richard Zsigmondy


1926–1950

1926: Theodor Svedberg 1927: Heinrich Wieland 1928: Adolf Windaus 1929: Arthur Harden / Hans von Euler-Chelpin 1930: Hans Fischer 1931: Carl Bosch / Friedrich Bergius 1932: Irving Langmuir 1933 1934: Harold Urey 1935: Frédéric Joliot-Curie / Irène Joliot-Curie 1936: Peter Debye 1937: Norman Haworth / Paul Karrer 1938: Richard Kuhn 1939: Adolf Butenandt / Leopold Ružička 1940 1941 1942 1943: George de Hevesy 1944: Otto Hahn 1945: Artturi Virtanen 1946: James B. Sumner / John Northrop / Wendell Meredith Stanley 1947: Robert Robinson 1948: Arne Tiselius 1949: William Giauque 1950: Otto Diels / Kurt Alder

1951–1975

1951: Edwin McMillan / Glenn T. Seaborg 1952: Archer Martin / Richard Synge 1953: Hermann Staudinger 1954: Linus Pauling 1955: Vincent du Vigneaud 1956: Cyril Hinshelwood / Nikolay Semyonov 1957: Alexander Todd 1958: Frederick Sanger 1959: Jaroslav Heyrovský 1960: Willard Libby 1961: Melvin Calvin 1962: Max Perutz / John Kendrew 1963: Karl Ziegler / Giulio Natta 1964: Dorothy Hodgkin 1965: Robert Woodward 1966: Robert S. Mulliken 1967: Manfred Eigen / Ronald Norrish / George Porter 1968: Lars Onsager 1969: Derek Barton / Odd Hassel 1970: Luis Federico Leloir 1971: Gerhard Herzberg 1972: Christian B. Anfinsen / Stanford Moore / William Stein 1973: Ernst Otto Fischer / Geoffrey Wilkinson 1974: Paul Flory 1975: John Cornforth / Vladimir Prelog

1976–2000

1976: William Lipscomb 1977: Ilya Prigogine 1978: Peter D. Mitchell 1979: Herbert C. Brown / Georg Wittig 1980: Paul Berg / Walter Gilbert / Frederick Sanger 1981: Kenichi Fukui / Roald Hoffmann 1982: Aaron Klug 1983: Henry Taube 1984: Robert Merrifield 1985: Herbert A. Hauptman / Jerome Karle 1986: Dudley R. Herschbach / Yuan T. Lee / John Polanyi 1987: Donald J. Cram / Jean-Marie Lehn / Charles J. Pedersen 1988: Johann Deisenhofer / Robert Huber / Hartmut Michel 1989: Sidney Altman / Thomas Cech 1990: Elias Corey 1991: Richard R. Ernst 1992: Rudolph A. Marcus 1993: Kary Mullis / Michael Smith 1994: George Olah 1995: Paul J. Crutzen / Mario Molina / F. Sherwood Rowland 1996: Robert Curl / Harold Kroto / Richard Smalley 1997: Paul D. Boyer / John E. Walker / Jens Christian Skou 1998: Walter Kohn / John Pople 1999: Ahmed Zewail 2000: Alan J. Heeger / Alan MacDiarmid / Hideki Shirakawa

2001–present

2001: William Knowles / Ryoji Noyori / K. Barry Sharpless 2002: John B. Fenn / Koichi Tanaka / Kurt Wüthrich 2003: Peter Agre / Roderick MacKinnon 2004: Aaron Ciechanover / Avram Hershko / Irwin Rose 2005: Robert H. Grubbs / Richard R. Schrock / Yves Chauvin 2006: Roger D. Kornberg 2007: Gerhard Ertl 2008: Osamu Shimomura / Martin Chalfie / Roger Y. Tsien 2009: Venkatraman Ramakrishnan / Thomas A. Steitz / Ada E. Yonath 2010: Richard F. Heck / Akira Suzuki / Ei-ichi Negishi 2011: Dan Shechtman 2012: Robert Lefkowitz / Brian Kobilka 2013: Martin Karplus / Michael Levitt / Arieh Warshel 2014: Eric Betzig / Stefan Hell / William E. Moerner 2015: Tomas Lindahl / Paul L. Modrich / Aziz Sancar 2016: Jean-Pierre Sauvage / Fraser Stoddart / Ben Feringa 2017: Jacques Dubochet / Joachim Frank / Richard Henderson 2018: Frances Arnold / Gregory Winter / George Smith 2019: John B. Goodenough / M. Stanley Whittingham / Akira Yoshino 2020: Emmanuelle Charpentier / Jennifer Doudna 2021: David MacMillan / Benjamin List 2022: Carolyn R. Bertozzi / Morten P. Meldal / Karl Barry Sharpless 2023: Moungi G. Bawendi / Louis E. Brus / Alexei I. Ekimov

vte

Han Chinese Nobel laureates

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Fellows of the Royal Society elected in 2006

Chemistry Encyclopedia

World

Index

Hellenica World - Scientific Library

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