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Comparison of sequences of YabJ and 24 homologs in the high-identity group. Residues in red boxes are invariant; in yellow boxes are sites of conservative substitution. Secondary structures are indicated above the alignment. Residues in the subunit interface are indicated by triangles below the alignment, and those with main-chain interactions by circles. Multiple sequence alignment was done with clustalw (24). The figure was produced with alscript (33).
