Arne Tiselius

Arne Tiselius was born on 10 August 1902 in Stockholm, Sweden, to Hans Abraham Tiselius, an insurance company employee, and his wife, Maria. After his father's death in 1906, the family moved to Gothenburg, where Tiselius attended school and developed an early interest in chemistry. He enrolled at Uppsala University in 1921, initially studying mathematics and chemistry, but soon gravitated toward biochemistry under the influence of Einar Hammarsten. Tiselius earned his bachelor's degree in 1924 and his licentiate in 1925, then began doctoral research on the electrophoresis of proteins under Theodor Svedberg, the inventor of the ultracentrifuge. He completed his PhD in 1930, with a thesis titled "The Moving Boundary Method of Studying the Electrophoresis of Proteins," which laid the groundwork for his later achievements. His early work was interrupted by a period at the Rockefeller Institute in Princeton (1934–1935), where he collaborated with John Northrop and others, broadening his expertise in protein chemistry.

Tiselius's most celebrated contribution was the development of moving-boundary electrophoresis, a technique that allowed proteins in solution to be separated based on their charge and mobility in an electric field. Building on earlier work by Swedish chemist Wilhelm Blitz and others, Tiselius refined the apparatus to achieve higher resolution and reproducibility, enabling the first detailed analysis of serum proteins. In 1937, he demonstrated that human blood serum could be separated into albumin and several globulin fractions, a breakthrough that transformed clinical diagnostics and protein research. This work earned him the 1948 Nobel Prize in Chemistry, awarded specifically for his research on electrophoresis and adsorption analysis, especially his discoveries concerning the complex nature of serum proteins. His methods were quickly adopted worldwide, and he later contributed to the development of zone electrophoresis and chromatography, which became essential tools in biochemistry and molecular biology.

After receiving the Nobel Prize, Tiselius continued to lead research at Uppsala, where he became a professor of biochemistry in 1938 and later headed the newly established Institute of Biochemistry. He played a pivotal role in founding the Swedish National Research Council and served as its first chairman from 1946 to 1950. Tiselius also contributed to the development of preparative electrophoresis and adsorption chromatography, and he was instrumental in establishing the journal Acta Chemica Scandinavica. His influence extended beyond the laboratory: he was a member of the Swedish Royal Academy of Sciences and served as its president in 1960. Tiselius's work inspired a generation of biochemists, including future Nobel laureates such as Pehr Edman, who developed the Edman degradation for protein sequencing. He died on 18 October 1971 in Uppsala, leaving a lasting legacy in the separation sciences that underpin modern proteomics and clinical diagnostics.

Beyond his famous electrophoresis work, Tiselius made several lesser-known contributions. He was an early advocate for the use of radioactive isotopes in biological research, collaborating with George de Hevesy on tracer studies. Tiselius also developed a method for the separation of amino acids using adsorption analysis, which predated modern chromatography. During World War II, he applied his techniques to the study of blood plasma fractions for military medical purposes, aiding in the production of albumin for shock treatment. Tiselius was a skilled pianist and considered a career in music before choosing science. He was also a member of the Swedish UNESCO delegation and helped establish the International Union of Biochemistry. His personal papers are archived at Uppsala University, offering insights into his meticulous experimental records and his correspondence with other leading scientists of his era.

Electrophoresis

A technique for separating charged molecules, such as proteins, in an electric field based on their mobility.

Moving-boundary electrophoresis

An early form of electrophoresis that observes the movement of a boundary between protein solution and buffer.

Adsorption analysis

A method for separating substances based on their differential adsorption to a solid medium.

Ultracentrifuge

A high-speed centrifuge used to separate particles by size and density, developed by Theodor Svedberg.