20836 1L3R 17.7294 21.3253 -7.15 B=8 C=43 E=3 G=10 H=15 S=18 T=5 B=5 C=45 H=35 S=15 Crystal Structure of a Transition State Mimic of the Catalytic Subunit of cAMP-dependent Protein Kinase -23.88 I 20 A 18 35 -11.01