PotF was evaluated as an antigen for a vaccine candidate against B. pseudomallei infection. Nonmembrane regions of the B. pseudomallei protein was expressed and purified from Escherichia coli and then evaluated as a vaccine candidate in an established mouse model of B. pseudomallei infection. When delivered with the monophosphoryl lipid A-trehalose dicorynomycolate adjuvant, the protein stimulated antigen-specific humoral and cellular immune responses. Immunization with the PotF protein domain afforded significant protection against a subsequent challenge with B. pseudomallei (Harland et al., 2007).
Harland et al., 2007: Harland DN, Chu K, Haque A, Nelson M, Walker NJ, Sarkar-Tyson M, Atkins TP, Moore B, Brown KA, Bancroft G, Titball RW, Atkins HS. Identification of a LolC homologue in Burkholderia pseudomallei, a novel protective antigen for melioidosis. Infection and immunity. 2007; 75(8); 4173-4180. [PubMed: 17517877].
Similar to Escherichia coli putrescine-binding periplasmic protein precursor PotF or b0854 SWALL:POTF_ECOLI (SWALL:P31133) (370 aa) fasta scores: E(): 3.3e-67, 49.3% id in 357 aa, and to Pseudomonas aeruginosa polyamine transport protein pa0301 SWALL:Q9I6J0 (EMBL: AE004468) (365 aa) fasta scores: E(): 6.3e-69, 49.59% id in 367 aa. Possible alternative translational start site
