Amino acid alignment of the Cfr protein from S. sciuri with similar proteins from M. tuberculosis H37RV, S. coelicolor A3(2), E. coli K12, H. influenzae Rd, P. aeruginosa PAO1, Synechocystis sp. strain PCC6803, T. maritima MSB8, B. subtilis 16, and T. pallidum produced with the DNAMAN sequence analysis software (Lynnon BioSoft, Vaudreuil, Quebec, Canada). Black boxes, identical amino acids; gray boxes, homologous amino acids which are present in at least 40% of the aligned sequences.