Crystallizing enzymes allowed researchers to isolate and study them in a purified form. The discussion connects that work to establishing the protein nature of the enzymes examined.
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45:56>> Unbelievable. Unbelievable. 1926 to 1930. First crystallization of enzymes. >> Yes. This was James Sumner at Cornell and John Northrop at nor at Rockefeller Institute in Princeton. At the time um Rockefeller had >> a like wing of its institute at Princeton New Jersey and they showed that enzymes are pure proteins. Okay. Before it used to be like enzymes are like oh it could be like proteins plus carbs plus all sorts of stuff. They were like, "No, no, I can just take an enzyme, crystallize it into a pure form, and then I can use things like X-ray crystalallography." >> And uh any relation to Northrup Grumman?
46:39We'll get there at some point later.