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Memorandum from Robert Corey to Linus Pauling. May 25, 1950.
Corey writes to relay to Pauling the details of recent measurements conducted on alpha-keratin.

Transcript

To: Linus Pauling

From: Robert B. Corey

May 25, 1950

Subject: Dimensions of the α-β transformation in proteins

The repeat distance of α-keratin is 5.1 Å. In the transformation to the β form, α-keratin elongates 100 percent, and gives an X-ray repeat of 6.8 Å. (2/3 of 10.2). On supercontraction α-keratin undergoes a reduction of about 30 to 50 percent in its length defending on conditions.

Bob

[Data]

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