Figure 2.
A, Crystal structure of the AT–pentasaccharide complex (from Protein Data Bank65). The pentasaccharide is marked in red. The basic residues of AT involved in interaction with the heparin pentasaccharide are shown in B, C, and D. B, Lys 114, Lys125, and Arg 129. C, Arg 47, Arg 46, Lys 11, and Arg 13. D, Arg 24, Phe 121, and Phe 122.