The Journal of General Physiology
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The Journal of General Physiology, Vol 3, 291-308, Copyright © 1921 by The Rockefeller University Press

ARTICLE

THE AMPHOTERIC PROPERTIES OF SOME AMINO-ACIDS AND PEPTIDES

Herbert Eckweiler 1, Helen Miller Noyes 1, and K. George Falk 1

1 From the Harriman Research Laboratory, the Roosevelt Hospital, New York.

The titration curves of solutions of glycine, alanine, alpha-ammo-butyric acid, leucine, glycyl-glycine, alanyl-glycine, alanyl-alanine, acetone, acetamide, urea, acetic acid, and aceturic acid were determined and some of the relations as dependent upon the chemical structures discussed.

The isoelectric points of some of the amphoteric electrolytes were found experimentally. The definition of isoelectric point, its theoretical significance, and method of calculation were considered in some detail.

Submitted on October 27, 1920


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