! subroutine char SEGMENTS make zt from ct init sele active end calc inte make pair init rama sele active end sele active end graph col 220 rama sele resi name GLY .a active end cell \ sele resi name GLY .a active end seq col 110 rama sele .not resi name GLY .a active end cros \ sele .not resi name GLY .a active end seq exit return