FIG. 1.

Comparison of the B. abortus (Ba) Cgt cyclic β-1,2-glucan transporter protein with the A. tumefaciens (At) ChvA and S. meliloti (Sm) NdvA proteins. Conserved amino acids are indicated by gray boxes. Three typical ABC transporter motifs, Walker A and B and the SGG(Q) ABC signature, are indicated by boxes. The percentages of identity with the amino acid sequence of the ABC transporter protein (Cgt) from B. abortus are indicated in parentheses. The alignment was performed with the MegAlign program.