Amino acid sequence of flagellin of Bacillus subtilis 168. I. Cyanogen bromide peptides.

Sequence studies are presented on the cyanogen bromide peptides derived from the flagellin of Bacillus subtilis 168. Eight unique CNBr peptides, ranging in length from 4 to 113 residues, were isolated in pure state. These peptides accounted for the amino acid composition of flagellin. The NH2-terminal methionyl residue of the protein reacted only partially with CNBr. Partial cleavage was observed at a Met-Glu bond (residues 22 to 23) of the protein.