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Conserved motifs of the N. punctiforme PilT proteins (NpR0117 and NpF2507 proteins), P. aeruginosa PilT (Pseu), Synechocystis strain PCC 6803 PilT1, and Synechocystis strain PCC 6803 PilT2. Black boxes indicate identical or conserved residues in all five of the sequences. Protein sequences were aligned using the program ClustalX. The Walker box motifs (thick lines), the Asp box and the His box (asterisks) are indicated. Note that only the central regions of the PilT sequences are shown.
