Fig 1.

Alignment of wild-type ribosomal protein S12 sequences of selected sphingomonads and E. coli. DSM 12444, Novosphingobium aromaticivorans F199; DSM 6014, Sphingomonas wittichii RW1; DSM 13593, Sphingopyxis alaskensis RB2256; NBRC 101211, Sphingobium japonicum UT26; DSM 24958, Sphingomonas sp. Fr1; E. coli, Escherichia coli K-12. Amino acids that differ among the selected sphingomonads are highlighted in gray. Arg-88 is highlighted in black. Amino acid substitutions known to render naturally streptomycin-sensitive S12 proteins resistant are shown above the E. coli S12 sequence and are highlighted by a black dot on top.