Archives are organized as follow:
step1to2:
    commands:           commands.step1to2_contacts.dat
    starting structure: step1_cryst.pdb
    target:             step2_cryst.pdb 
    final result:       step2_morph_contacts.pdb

step2to3:
    commands:           commands.step2to3_contacts.dat
    starting structure  step2_morph_contacts.pdb + efg_start.pdb
    target:             step3_cryst.pdb 
    final result:       step3_morph_remake.pdb

step3to4:
    commands:           commands.step3to4_contacts.dat
    starting structure: step3_morph_remake.pdb
    target:             3J5_ribo_AaVWXZ_target_Tt123e_noH.pdb
    final result:       step4_morph_remake.pdb

step4to5:
    commands:           commands.step4to5_contacts.dat
    starting structure: step4_morph_remake.pdb
    target:             2WR_ribo_target_Tt123e.pdb 
    final result:       step5_morph_remake.pdb

step5to6:
    commands:           commands.step5to6_contacts.dat
    starting structure: step5_morph_remake.pdb
    target:             2WD_ribo_target_Tt123.pdb 
    final result:       step6_morph_remake.pdb