Storage Proteins of Gramineae

Most investigations on these proteins have, not surprisingly, been carried out on the major cultivated members of this group, i.e. the cereals. The four types 

Amino acid Phaseolus vulgaris Phaseolus aureus Vida faba  

The glutelin fraction of cereal protein is more heterogeneous than the other storage proteins and consists of several different proteins. Wheat gliadin, for example, is separable into four major fractions a, j3, y and a but, in all, the gliadin may have as many as 46 components revealed by gel electrophoresis 

When we look at the amino acid compositions of the proteins from starchy endosperm and aleurone layers (Sect. 2.1.2) we can get some indication as to how the different kinds of protein are distributed within the kernel (Table 2.6). In wheat, the aleurone layer protein is clearly different from that in the remainder of the endosperm, being extremely rich in arginine this could reflect a high globulin level. Rice aleurone grains, however, are rich in albumins [69]. 

We have referred above to the nutritional quality of cereal protein. Much energy has been expended in attempting to modify the amino acid composition using various breeding techniques. Protein of Z. mays, for example, is noto- 

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