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Alignment of the conserved central and C-terminal part of PilT-like proteins. Identical residues are indicated by grey shadows. The conserved cysteine residues found in PulE homologues are marked by a star (∗) and are boxed. B.s., B. subtilis; K.o., K. oxytoca; N.g. N. gonorrhoeae; T.t., T. thermophilus HB27.
