define helix1 1020-1030:A
define helix2 1032-1037:A
define helix3 1047-1060:A
define helix4 1090-1100:A
define helix5 1103-1120:A
define helix6 1126-1144:A
echo helix1 to helix6  are alpha-helices (of the chain A)
define strand1 1003-1010:A
define strand2 1038-1046:A
define strand3 1067-1071:A
define strand4 1082-1089:A
echo strand1 to strand4 are beta-strands (of the chain A)