TABLE 1.

Summary of the structure and antibacterial and water clarification effects of the Flo polypeptide and derivatives^a

^aThe name, sequence, and activity summary of all linear peptides are shown along with the parental Flo sequence. The underlined amino acid residues on the primary sequence indicate punctual sequence changes. Antibacterial activities are summarized with a minus sign, indicating greater than 10% bacterial survival, or with +, ++, or +++ representing 1 to 10%, 0.01 to 1%, or less than 0.01% survival, respectively, in the antibacterial assay. Flocculation activities depicted by a minus sign indicate lack of detectable activity, while ++ indicates an activity corresponding to 60 to 100% of that observed for the full-length Flo. + represents lower but detectable activity. ND, not determined. At the bottom, a schematic representation of Flo structural and functional features displays the position of the positive charges and the regions predicted to form α-helical structures (H), loops, and the two prolines within a loop.