Donald F. Steiner
Donald Frederick Steiner (July 15, 1930 – November 11, 2014) was an American biochemist and a professor at the University of Chicago.

Birth and education 
Donald F. Steiner was born in 1930 in Lima, Ohio. He completed his B.S. in Chemistry and Zoology from the University of Cincinnati in 1952. He completed his M.S. in biochemistry and his M.D. from the University of Chicago in 1956. He then completed his medical and research training – with an internship at King County Hospital and residency/post-doctoral research at the University of Washington – before returning to the University of Chicago as a faculty member in 1960.

Career 
Steiner was promoted to full professor in 1968, and became chair of the department of biochemistry in 1973. From 1985 to 2006, Steiner was a senior investigator of the Howard Hughes Medical Institute.

In 1972, Steiner was elected to the American Academy of Arts and Sciences. The following year, he was elected to the National Academy of Sciences.

He died in Chicago on November 11, 2014.

Research 
Donald F. Steiner is known for his work in diabetes research, protein processing, and hormone biology. In 1967, he published his discovery of proinsulin, precursor to the active hormone insulin. He and his colleagues discovered some of the enzymes that convert proinsulin into insulin, and also devised methods for measuring insulin and its precursors in human serum.

Awards 
 In 1970 he received the Ernst Oppenheimer Award for the Endocrine Society
 In 1971 he received the Canada Gairdner International Award
 In 1976 he received the Banting Medal for Scientific Achievement from the American Diabetes Association
 In 1984/5, he was awarded the Wolf Prize in Medicine for "his discoveries concerning the bio-synthesis and processing of insulin which have had profound implications for basic biology and clinical medicine".
 In 1993, he received an honorary doctorate from the faculty of medicine at Uppsala University, Sweden
In 2004, he was elected to the American Philosophical Society
 In 2014, he received the University of Chicago Alumni Medal

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1930 births
2014 deaths
American biochemists
University of Cincinnati alumni
University of Chicago alumni
University of Chicago faculty
Wolf Prize in Medicine laureates
Members of the United States National Academy of Sciences
Members of the American Philosophical Society
Pritzker School of Medicine alumni