#for PDB structure 3gap #following 4 lines are for RasMol 2.5 compatibility select spacefill off strands off ribbons off reset slab off rotate z 152 rotate y 4 rotate x 117 translate x 17 translate y 3 zoom 141 restrict *a wireframe off strands 100 colour white select 9-134a colour red ribbons select 139-189a colour blue ribbons centre tyr63a.O select gln125a.NE2 label 'this alpha-helix spans both domains' translate x -8