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. Author manuscript; available in PMC: 2008 Aug 10.
Published in final edited form as: J Mol Biol. 2007 May 26;371(2):302–307. doi: 10.1016/j.jmb.2007.05.060

Fig. 2.

Fig. 2

Fig. 2

Fig. 2

Nucleotide binding. (A) Interactions of cAMP with residues of PDE4D2. Dotted lines represent hydrogen bonds or metal coordinations. Isolated purple balls are bound water molecules. (B) The electron density for cAMP, which was calculated from the omitted structure and contoured at 3 sigmas. (C) Structural superposition between PDE4D2-cAMP and PDE4D2-AMP. The color codes for bonds are green for residues of PDE4D2-cAMP, white for cAMP, gold for AMP, and blue for residues of PDE4D2-AMP.