CHEMISTRY OF CELL WALLS 



31 



TABLE 10 



Principal Combinations of Major Amino Acid Constituents Found 

 in Walls of Gram-Positive Bacteria 



Groups 



Amino Acids 



Staphylococci 

 Micrococci 



Streptococci 

 Lactobacilli 

 Aerococci 



Bacilli 



Coynebacteria 

 Mycobacteria 

 Nocardia 



Micrococci 



Clostridia 

 Proprionibacteria 

 Streptomyces 

 Micromonospora . 



Alanine, glutamic acid, lysine, glycine, and 

 serine in some 



Alanine, glutamic acid, lysine, and aspartic 

 acid in some 



Alanine, glutamic acid, DAP 



Alanine, glutamic acid, DAP, glycine 



References 23, 24, 31, 37. 41, 51 



studied do diaminopimelic acid (DAP) and lysine occur to- 

 gether as major amino acid constituents. 



More and more information on the quantitative amino 

 acid composition of bacterial walls has become available 

 (Perkins and Rogers, ^^ Rogers and Perkins,^* Strominger, 

 Park, and Thompson,^^ Hancock ^6), and on the whole there 

 is good agreement for various organisms, although it is now 

 apparent that there will be significant differences between 

 various strains.'^ The molar ratios of the principal amino 

 acids of walls from various species investigated by Salton 



