... 1.01b,t,g–-66 147 -33 -1 63 59 0.00 0.22b,t,g+-68 118 -31 -161 -68 0. 63 1 .34 b,g+,t - 75 162 30 - 93 172 2. 53 0.69b,g+,g–)75 158 25 )102 61 3. 41 1.47b,g+,g+)74 158 24 )102 )68 3. 38 1.76c,g+,t ... synthesis.(Received 26 February 20 03, revised 29 April 20 03, accepted 13 May 20 03) Eur. J. Biochem. 270, 2869–2878 (20 03) Ó FEBS 20 03 doi:10.1046/j.1 432 -1 033 .20 03. 036 65.xcyclic constraint excludes ... -44 30 165 -70 2.92 2.72a,g–,t )67 )15 )33 93 170 4.90 3. 47a,g–,g–)64 )29 )36 87 82 5.72 3. 49a,g–,g+)64 )21 )34 91 )58 6.79 4.75b,t,t -74 130 31 166 165 2.27 1.01b,t,g–-80 111 30 ...