Comparison of the T. maritima and E. coli RBP. (A) Superimposition of ribose-complexed T. maritima (blue), E. coli (cyan)  and T. tengcongensis (magenta)  RBPs. (B) Ribbon representation of T. maritima RBP molecule A; (C) E. coli RBP . N- and C-termini are indicated; yellow, β-strands; green, ribose. Structures in (B) and (C) are aligned on the C-terminal domain.