Use the following sequence of commands:
O > db_create Heap> Name of new data block: new_residue_type Heap> How many elements in data block: 131 Heap> Type of elements (T,C,[I],R): c O > db_set_dat Heap> Full name of data block: new_residue_type Heap> It is of type C and has 131 entries Heap> Start and end entries [1 131 ]: Heap> Changing entries 1 to 131 of data block new_residue_type Heap> Enter value (must be type C): ALA O > write new_residue_type ;; NEW_RESIDUE_TYPE C 131 (1x,5a) ALA ALA ALA ALA ALA ALA ALA ALA ALA ALA ... ALA ALA ALA ALA ALA ALA O > sam_init Sam> This WILL initialise certain datablocks. Sam> Molecule name ( to exit): new Sam> Database compressed. Sam> Making residue names. Sam> There are 131 residues, 655 atoms. O > dir new_* Heap> NEW_RESIDUE_TYPE C W 131 Heap> NEW_RESIDUE_NAME C W 131 Heap> NEW_ATOM_NAME C W 655 Heap> NEW_ATOM_XYZ R W 1965 Heap> NEW_ATOM_B R W 655 Heap> NEW_ATOM_WT R W 655 Heap> NEW_ATOM_Z I W 655 Heap> NEW_ATOM_SELECT I W 655 Heap> NEW_ATOM_VISIBLE I W 655 Heap> NEW_RESIDUE_POINTERS I W 262 Heap> NEW_RESIDUE_CG R W 524
You'll need this when you have finished tracing and touching up the skeleton and are about to start using the Baton or Bone_Pick_Ca commands to put in alpha carbon atoms.