James B. Sumner

James B. Sumner
Sumner in 1946
Born(1887-11-19)November 19, 1887
DiedAugust 12, 1955(1955-08-12) (aged 67)
NationalityAmerican
Alma materHarvard University
Known forFirst to isolate an enzyme in crystallized form
First to show that an enzyme is a protein
AwardsNobel Prize in Chemistry (1946)
Scientific career
FieldsBiochemistry[1]
InstitutionsMount Allison University,
Cornell University
Doctoral advisorOtto Folin
Doctoral studentsAlexander Dounce[2]

James Batcheller Sumner (November 19, 1887 – August 12, 1955) was an American biochemist. He discovered that enzymes can be crystallized, for which he shared the Nobel Prize in Chemistry in 1946 with John Howard Northrop and Wendell Meredith Stanley.[3] He was also the first to prove that enzymes are proteins.

  1. ^ "James Batcheller Sumner | Nobel Prize, Enzyme Crystallization & Protein Chemistry | Britannica".
  2. ^ Harris, Ruth R.; Nirenberg, Marshall W. (1995). "The Harris Interviews" (PDF). National Institutes of Health. p. 41. Archived from the original (PDF, 0.2 MB) on 2012-07-17. Retrieved 2012-07-23.
  3. ^ "The Nobel Prize in Chemistry 1946 James B. Sumner - Facts". Nobelprize.org. Retrieved 4 November 2020.