Figure 1. Sequence alignment and close-up view of the Ado-binding site of LdAdK.
(A) Alignment of the N-terminal region of LdAdK amino acid sequence with those from T. gondii (NCBI accession number AAF01261), Babesia canis (NCBI accession number CAA11263), human (NCBI accession number AAA97893) and rat (NCBI accession number AAH81712) showing the invariant aspartate residue. (B) Structural model illustrating the position of Asp16 relative to the bound Ado; the broken lines depict the possible interaction between the Asp16 carboxy group and ribose hydroxy groups of Ado.