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Model of FGF-FGFR-heparin complex obtained by X-ray. FGF1-FGFR2-heparin decasaccharide (A) (PDB code 1E0O) and its amplified figure (B), FGF2-FGFR1-heparin decasaccharide (C) (PDB code 1FQ9) and its amplified figure (D). In the carton models, the heparin binding domains are shown in red. In the amplified figures, different kinds of heparin binding domains are shown in different colors according to the amino acid residues.
