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Sequence alignment of Imp22 protein from A. actinomycetemcomitans. Identical residues are indicated by black shading, while conservative substitutions are indicated by gray shading. Alignment was determined by using Vector NTI software from InforMax, Inc., North Bethesda, Md. ACTA, A. actinomycetemcomitans; YFGM_ECOLI, hypothetical 22.2-kDa protein of E. coli (3); Y370_HAEIN, hypothetical protein (HI0370) of H. influenzae (8).
