349 Polypeptides and Related Compounds 



720 Pantetheine: Colorless, hygroscopic, amorphous powder, [a]i,^" 



+ 12.9° (in water). 



CHs 



I OH 



HOCH,— C— CH— CO— NH— CH,— CH2— CO— NH— CH,— CH,— SH 



CH3 



721 Pantethine: viscous oil. 



CH3 

 I 

 IHOCH2— C CH— CO— NH— CH2— CH2— CO— NH— CH2— CH2— S— 12 



I I 

 CH3 OH 



Yeasts, Ashbya gossypi, many other microorganisms 



William L. Williams, E. Hoff-Jorgensen and Esmond E. 

 SneU, /. Biol. Chem. 177 933 (1949). 



Esmond E. Snell, Gene M. Brown, Vincent J. Peters, Jean A. 

 Craig, E. L. Wittle, J. A. Moore, V. M. McGlohon and O. D. 

 Bird, J. Am. Chem. Soc. 72 5349 (1950). 



Vincent J. Peters, Gene M. Brown, William L. Williams and 

 Esmond E. SneU, ibid. 75 1688 (1953). 



Gene M. Brown and Esmond E. Snell, ibid. 75 1691 (1953). 



722 Glutathione-Cysteine Disulfide, C13H22O8N4S0. 



H2N— CH— CH2— CH,— CO— NH— CH— CO— NH— CH2— COOH 



I 1 



COOH CH2 



I 



S— S— CH>— CH— COOH 



I 

 NH2 



Saccharomyces cerevisiae 



Glutathione itself occurs in yeasts. The disulfide above 

 was not isolated. 



Arthur H. Livermore and Edward C. Muecke, Nature 173 

 265 (1954). 



723 Serratamic Acid, CjaHo.-.OsN, colorless crystals, m.p. 138° (dec.), 



[(x]v-° -10.2° (c 5.0 in ethanol). 



O CH.OH 



II I 



CH3(CH2)6CHCH2C— NH— CH 



I I 



OH COOH 



