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The RSR dictionary

  The RSR dictionary consists of a series of text datablocks, with names RSR_dict_xxx, where xxx is the three-letter code of the residue type. Each line in the entry corresponds to a fragment group. For example, the standard dictionary for isoleucine contains three fragments:   

RSR_dict_ile             T         3        70
CA   C   O   N+
CB   CG1 CG2
CD1

The + after the nitrogen in the main chain fragment means that this nitrogen comes from the next residue. Equivalently, a - in front of a C, say, would mean the C atom from the previous residue. These fragment definitions can be changed at will. Be sure to change the number of lines in the datablock header (= 3 in this example). The RSR fragment dictionary is currently also being used for the fragment definitions of the Move_fragment command.