Kaj Ulrik Linderstrøm-Lang
Danish biochemist

Kaj Ulrik Linderstrøm-Lang (29 November 1896 – 25 May 1959) was a Danish protein scientist, who was the director of the Carlsberg Laboratory from 1939 until his death.
His most notable scientific contributions were the development of sundry physical techniques to study protein structure and function (especially hydrogen–deuterium exchange), and his definitions of protein primary, secondary,
tertiary and quaternary structure.
Linderstrøm-Lang devoted himself to protein science and trained a generation of eminent protein scientists. He maintained a fun atmosphere in his laboratory with Christmas parties and trips to the Tivoli amusement park in Copenhagen. Linderstrøm-Lang was also a writer, musician and story-teller, and active in the resistance movement against the Nazi occupation of Denmark.
Research and career
Early work
Linderstrøm-Lang began as a physicist. Only a year after the publication of the Debye–Hückel theory, Linderstrøm-Lang applied it to proteins and contributed in defining the term isoionic point. In particular, he formally considered the ensemble of protonation states. Linderstrøm-Lang began in the Carlsberg laboratory under its second director S. P. L. Sørensen (who invented the pH scale). 1949 volumetric studies showing that the interior of proteins has very few charges and, hence, is likely to be hydrophobic.
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This entry incorporates text from “Kaj Ulrik Linderstrøm-Lang” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.