Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Chemical structures of the siderophores used in this study. (A) Aerobactin (R1 = R2 = COOH; R3 = R4 = H; n = 2), schizokinen (R1 = R2 = H; R3 = R4 = H; n = 0), rhizobactin 1021 (R1 = R2 = R3 = H; R4 = the structure in panel B; n = 0). (C) Pyochelin. (D) Ferrichrome (R = CH3; R1 = R2 = R3 = H).
