Kaj Ulrik Linderstrøm-Lang

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.