[ defaults ]
; nbfunc        comb-rule       gen-pairs       fudgeLJ fudgeQQ
  1             2               yes             1.0     1.0

[ atomtypes ]
;at. type at.num     mass      charge    ptype     sigma           epsilon
P           1         1          0.         A         1               1
B           1         1          0.         A         2               2
C           1         1          0.         A         3               1.5

[ bondtypes ]
; i    j func        b0          kb
P      P    1         1          0.
P      B    1         1          0.
B      C    1         1          0.

[ angletypes ]
;  i    j    k  func       th0       cth
P       P    P   1         0         0.
P       B    C   1         0         0.
P       P    B   1         0         0.

[ dihedraltypes ]
P   P   P   B     1     0    0    1
P   P   B   C     1     0    0    1 

[ moleculetype ]
; Name            nrexcl
Protein             3

[ atoms ]
;   nr       type  resnr residue  atom   cgnr     charge       mass  
1           P       1      R        P     1         0           1
2           P       1      R        P     1         0           1
3           P       1      R        P     1         0           1
4           B       1      R        B     1         0           1
5           C       1      R        C     1         0           1

[ bonds ]
;  ai    aj funct            c0            c1            c2            c3
1    2      1   
2    3      1  
3    4      1 
4    5      1

[ angles ]
;  ai    aj    ak funct            c0            c1            c2            c3
1      2    3      1   
2      3    4      1   
3      4    5      1   

[ dihedrals ]
;  ai    aj    ak    al funct       
1    2   3    4   1  
2    3   4    5   1 

[ system ]
; Name
Protein

[ molecules ]
; Compound        #mols
Protein            1