larger lysine polymers and the protamine salmine were bactericidal but , at sublethal concentrations , sensitized the strains to the antibiotics mentioned above , whereas lysine4 , streptomycin , cytochrome c , lysozyme , and the polyamines cadaverine , spermidine , and spermine had neither bactericidal nor sensitizing activity .
C0033603
protamine
C0036107
salmine