SUMMARY: Hydrolysates of the cell walls of 26 strains of group A streptococci were examined by paper chromatography. In all cases lysine, glutamic acid, alanine, glucosamine, muramic acid and rhamnose were found as the principal components. The mean relative proportion of lysine: glutamic acid:alanine was 1.1:1:4. Thus even when a number of strains of a particular bacterial species was tested, there was good uniformity in the cell-wall composition. Samples of cell-wall material which remained undigested after treatment with proteolytic enzymes all contained small amounts of several amino acids. It seems probable that a small amount of polypeptide or protein remained firmly attached to the cell walls examined.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error