... 2.8 31( 4) 1. 85 1. 97 1. 91 1.66 2 .13 1. 88 1. 98 2.02 1. 97 1. 75 2.28 1. 76 1. 98 1. 82 1. 94 1. 86 2.07 2.04 2 .19 1. 93 2. 01 2 .16 1. 87 1. 90 15 4 15 5 15 4 15 7 14 6 17 4 16 5 15 8 14 8 13 9 13 9 16 7 14 8 16 7 17 3 17 2 16 2 ... 16 2 13 8 14 5 16 4 15 6 14 6 17 0 16 4 x,y,z x +1, y,z x +1, y,z 1- x,y +1 ⁄ 2,-z x,y,z x,y,z x,y,z x,y,z x -1, y,z 1- x,y -1 ⁄ 2 ,1- z x,y,z x,y +1, z x,y +1, z x,y -1, z x,y -1, z x,y,z 1- x,y -1 ⁄ 2 ,1- z x,y,z 1- x,y ... al 17 18 19 20 21 22 23 24 25 Conformational comparison of endomorphin- 2 and its C-terminal free acid endomorphin- 1 using NMR spectroscopy and molecular modeling FEBS Lett 439, 13 –20 Flippen-Anderson...