www.sciencemag.org (this information is current as of January 1, 2008 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/318/5858/1931 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/1149460/DC1 can be found at:...

ALTHOUGH previous work has shown the presence of proteolytic activity in wheat and wheat flour, attention has been focused on the fate of the wheat proteins rather than on the nature of the enzymic processes [Sharp and Elmer, 1924; Johnson et al., 1929; Brownlee and Bailey, 1930]. Although the proteolytic activity of wheat is very slight [Cairns and Bailey, 1928; Herd, 1931; Landis, 1935] it ma...