John Howard Northrop (July 5, 1891 – May 27, 1987) was an American biochemist who, with James Batcheller Sumner and Wendell Meredith Stanley, won the 1946 Nobel Prize in Chemistry. The award was given for these scientists' isolation, …

John Howard Northrop was an American biochemist who received (with James B. Sumner and Wendell M. Stanley) the Nobel Prize for Chemistry in 1946 for successfully purifying and crystallizing certain enzymes, thus enabling him to determine their chemical nature.

Professor Northrop is the author of Crystalline Enzymes, published in 1939. He edited the Journal of General Physiology (Rockefeller Institute) for some years and he has written numerous papers on the physical chemistry of proteins, agglutination of bacteria, kinetics of enzyme reaction, and the chemical nature of enzymes.

John Howard Northrop Nobel Prize in Chemistry 1946 Born: 5 July 1891, Yonkers, NY, USA Died: 27 May 1987, Wickenberg, AZ, USA Affiliation at the time of the award: Rockefeller Institute for Medical Research, Princeton, NJ, USA Prize motivation: “for their preparation of enzymes and virus proteins in a pure form”

JOHN HOWARD NORTHROP, trained in chemistry and intro- duced to general physiology by Jacques Loeb, proved that the enzymes pepsin and trypsin are proteins. The pattern of investigation that he used in this work was fol-lowed by his associates in isolating and examining other enzymes.

J OHN HOWARD NORTHROP, trained in chemistry and introduced to general physiology by Jacques Loeb, proved that the enzymes pepsin and trypsin are proteins. The pattern of investigation that he used in this work was followed by his associates in isolating and examining other enzymes.

The Nobel Prize -winning American biological chemist John Howard Northrop (1891-1987) established that enzymes are proteins and also showed that a bacterial virus is a nucleic acid-protein complex. On July 5, 1891, J. H. Northrop was born in Yonkers, NY.

The death of Nobel Laureate, John Howard Northrop, on May 27, 1987 in Wickenberg, Arizona, at the age of 95 concluded a relationship with the Berkeley campus that began in 1939, when Northrop presented the Hitchcock Lectures on “The Crystalline Enzymes.”

JOHN HOWARD NORTHROP (July 5, 1891-May 27, 1987) John Howard Northrop died at the age of nearly ninety-six after a brilliant career as a biochemist. This was capped by the Nobel Prize in Chemistry in 1946 for his work on crystallization of enzymes and the demonstration that they are proteins.

John Howard Northrop (July 5, 1891 – May 27, 1987) was an American biochemist. He shared the 1946 Nobel Prize in Chemistry with James Batcheller Sumner and Wendell Meredith Stanley. Northrop was elected a Fellow of the American Academy of Arts and Sciences in 1949. [1] .

John Howard Northrop was an American biochemist who won, with James Batcheller Sumner and Wendell Meredith Stanley, the 1946 Nobel Prize in Chemistry. The award was given for these scientists' isolation, crystallization, and study of enzymes, proteins, and viruses.

Chemist Nobel Prize in Chemistry, 1946, shared with Wendell M. Stanley and James B. Sumner. John Howard Northrop was born in New York City on July 5, 1891, to Alice Bell (Rich) and John Isaiah Northrop, a zoology professor at Columbia University. His father died in a laboratory explosion shortly before his birth.

John Howard Northrop (July 5, 1891 – May 27, 1987) was an American biochemist who, with James Batcheller Sumner and Wendell Meredith Stanley, won the 1946 Nobel Prize in Chemistry. The award was given for these scientists' isolation, …

John Howard Northrop, born on July 5, 1891 in Yonkers, New York, showed an early aptitude for mathematics, chemistry, and zoology.

John Howard Northrop (July 5 1891 – May 27 1987) was an American biochemist who won the Nobel Prize in Chemistry in 1946 (with James Batcheller Sumner and Wendell Meredith Stanley) for purifying and crystallizing certain enzymes.

(1891–1987) American chemist. The son of biologists, Northrop was born in Yonkers, New York, and educated at Columbia, obtaining his PhD there in 1915. In 1917 he joined the Rockefeller Institute of Medical Research, only leaving on his retirement in 1961. In the early 1930s Northrop confirmed some earlier results of James Sumner.

John Howard Northrop, 1891–1987, American chemist, b. Yonkers, N.Y., Ph.D. Columbia, 1915. He was a researcher at the Rockefeller Institute for Medical Research (now Rockefeller Univ.) from 1916 until his retirement in 1961.

John Howard Northrop (July 5, 1891 – May 27, 1987) was an American biochemist who won the Nobel Prize in Chemistry in 1946 (with James Batcheller Sumner and Wendell Meredith Stanley) for purifying and crystallizing certain enzymes.

John Northrop shared the Nobel Prize in chemistry in 1946 with Wendell Stanley, awarded to them "for their preparation of enzymes and virus proteins in a pure form," and with James Sumner, "for his discovery that enzymes can be crystallized."

General administrative correspondence on RIMR. Some correspondence on his work on production of acetone by bacterial action, 1918. Letter to SF criticizing work of Anson and Mirsky on hemoglobin, 6/12/31. Memorandum to SF on his production of …

John Howard Northrop (ur.5 lipca 1891 w Yonkers, Nowy Jork, zm. 27 maja 1987 w Wickenberg, Arizona) – amerykański biochemik w Instytucie Medycznym Rockefellera w Princeton.Prowadził prace badawcze nad fermentami, mechanizmem trawienia białek za pomocą pepsyny.Wydzielił antytoksyny dyfterytu jako pierwszego antyciała otrzymanego w stanie krystalicznym.

Apr 3, 2025 · Dr. John Howard, head of the World Trade Center Health Program, lost his job during a wave of government job cuts ordered by U.S. Health and Human Services (HHS) Secretary Robert F. Kennedy Jr. The Trump administration says these cuts are part of efforts to reduce the size of the federal workforce.

4 days ago · Following outrage from advocates and members of Congress and widespread news coverage, the Trump administration has reportedly reinstated Dr. John Howard as head of a federal health program for 9/ ...