Donald Van Slyke
Donald Van Slyke, during his time atBrookhaven National Laboratory
Born	Donald Dexter Van Slyke (1883-03-29)March 29, 1883 Pike, New York
Died	May 4, 1971(1971-05-04) (aged 88)
Education	University of Michigan (BA 1905, PhD 1907)
Known for	Kinetics of urease
Awards	Many, includingNational Medal of Science
Scientific career
Fields	Biochemistry
Institutions	Rockefeller Institute,Brookhaven National Laboratory
Doctoral advisor	Moses Gomberg

Donald Dexter Van Slyke (March 29, 1883 – May 4, 1971), nicknamedVan, was aDutch Americanbiochemist. His achievements included the publication of 317 journal articles and 5 books,^[1] as well as numerous awards, among them theNational Medal of Science and the firstAMA Scientific Achievement Award.^[1] TheVan Slyke determination, a test of amino acids, is named after him.^[2]

Van Slyke was born inPike, New York on March 29, 1883. He completed his BA in 1905 and PhD in 1907 both at theUniversity of Michigan, his father's alma mater.^[1] His PhD studies were performed underMoses Gomberg.^[1]

Van Slyke took up apost-doctoral position at theRockefeller Institute in 1907, underPhoebus Levene. Levene also arranged for him to spend one year inBerlin underHermann Emil Fischer in 1911.^[1] His early work focused on determining theamino acid composition ofproteins. A major achievement during this time was the discovery of the amino acidhydroxylysine.^[3]

Work with G. E. Cullen on urease^[4] led to a mechanism that yields a kinetic equation observationally indistinguishable from the Henri–Michaelis–Menten equation, but based on different assumptions. Whereas Henri,^[5] and later Michaelis and Menten,^[6] treated the binding of substrate to free enzyme to produce an enzyme–substrate complex as an equilibrium, Van Slyke and Cullen treated it as an irreversible reaction:

Enzyme + substrate → enzyme–substrate complex → enzyme + product

Effectively, therefore, they assumed a steady-state process.^[7] Their equation for the rate${\displaystyle v}$ at substrate concentration${\displaystyle a}$,

${\displaystyle v=\frac{Va}{k_2/k_1+a}}$

resembles the Henri–Michaelis–Menten equation but the constant${\displaystyle k_2/k_1}$ in the denominator is interpreted differently.

In 1914, Van Slyke was appointed chief chemist of the newly founded Rockefeller Institute Hospital, where he played a key part in developing the field ofclinical chemistry.^[8] His work focused especially on the measurement ofgas andelectrolyte levels intissues,^[1] for which he is considered to be one of the founders of modern quantitative blood chemistry.^[8] He is also considered by many to have first popularised the term "clinical chemistry" in his two-volume workQuantitative Clinical Chemistry, co-published withJohn P. Peters. The two-volume work was widely accepted in the medical world as the"Bible" of quantitative clinical chemistry.^[1] During this period, he also served as managing editor of theJournal of Biological Chemistry from 1914 to 1925.

In 1948, approaching retirement age, Van Slyke took up a position as deputy director of biology and medicine of the newly-formedBrookhaven National Laboratory. He held this position briefly before moving back into research at Brookhaven, which he continued until his death in 1971.^[1]

• Yale University, 1925
• University of Michigan, 1935
• Northwestern University, 1940
• University of Chicago, 1941
• University of London, 1951
• Rockefeller University, 1966

• University of Oslo, 1938
• University of Amsterdam, 1962
• University of Ulm, 1970

• Charles Mickle Fellowship,University of Toronto, 1936
• Phillip A. Conne Medal, Chemists' Club of New York, 1936
• Willard Gibbs Award, Chicago Section of theAmerican Chemical Society, 1939
• Order of Brilliant Jade,Republic of China, 1939^{[citation needed]}
• Kober Medal,Association of American Physicians, 1942
• Order of Brilliant Star, Republic of China, 1947
• Fisher Award in Analytical Chemistry, American Chemical Society, 1953
• John Phillips Memorial Award, American College of Physicians, 1954
• First Van Slyke Award in Clinical Chemistry, American Association of Clinical Chemists, 1957
• FirstScientific Achievement Award,American Medical Association, 1962^[9]
• Ames Award, American Association of Clinical Chemistry, 1964
• National Medal of Science,USA, 1965^[10]
• Elliott Cresson Medal,Franklin Institute of Philadelphia, 1965^[11]
• Academy Medal for Distinguished Contributions in Biomedical Science,New York Academy of Medicine, 1967^[12]

• United StatesNational Academy of Sciences (1921)^[13]
• American Philosophical Society (1938)^[14]
• American Academy of Arts and Sciences (1940)^[15]

• People from Pike, New York
• University of Michigan alumni
• 20th-century American biochemists
• American people of Dutch descent
• National Medal of Science laureates
• 1883 births
• 1971 deaths
• Scientists from New York (state)
• Clinical chemists
• Journal of Biological Chemistry editors
• Members of the American Philosophical Society

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