FIG. 2.

Comparison of the B. fragilis RokA protein with recently characterized ROK family members. Shown are the conserved ATP binding sequence (i) and the ROK domains 1 (ii) and 2 (iii). B.f, Bacteroides fragilis; S.c, Streptomyces coelicolor; S.e, Salmonella enterica; P.b, Prevotella bryantii; E.c, Escherichia coli (NanK and YcfX); B.s, Bacillus subtilis; T.t, Thermoproteus tenax; A.p, Aeropyrum pernix. An asterisk indicates the start of the known protein sequence. Identical or similar residues are boxed in gray.