Present in small amounts in most proteins. Fate obscure.

By the method of liver perfusion, Embden, Salomon, and Schmidt6 could find no acetone bodies arising from valin.

1 Wohl: "Biochemische Zeitschrift," 1907, v, 45. 2 Nef: "Liebig's Annalen," 1904, cccxxxv, 247.

3 Embden and Schmitz: "Biochemische Zeitschrift," 1911-12, xxxviii, 393. 4 Fellner: Ibid., 1911-12, xxxviii, 414.

5 Embden, Salomon, and Schmidt: "Hofmeister's Beitrage," 1906, viii, 129.

Dakin1 gave valin to a phlorhizinized dog, but could find no clear evidence of glucose or β-oxybutyric acid formation from it. Its oxy-acid, α-oxy-isovalerianic acid, also yielded little or no sugar.