PRES JOIN 0.00
! Usage patch join segid1 residue1 segid2 residue2 setup followed 
!  by ic para and ic build
!  where segid1 and segid2 are the N-terminal polypeptide and C-terminal peptide
!  here joining residue1 to residue2. 
! This patch joins two protein segments with a peptide bond.

GROUP
ATOM 1C  C  0.51
ATOM 1O  O  -0.51
ATOM 2HN  H  0.31
ATOM 2N  NH1 -0.47 
ATOM 2CA  CT1 0.07
ATOM 2HA  HB  0.09
GROUP
DELETE ATOM 1OT2
DELETE ATOM 1OT1
DELETE ATOM 2HT1
DELETE ATOM 2HT2 
DELETE ATOM 2HT3

BOND 1C 1O  1C 2N  2N 2HN

ANGLE 1CA 1C 1O  1CA 1C 2N  1O 1C 2N
ANGLE 1C 2N 2HN 1C 2N 2CA  2HN 2N 2CA

DIHE 1N 1CA 1C 2N   1N 1CA 1C 1O   
DIHE 1CB 1CA 1C 2N   1CB 1CA 1C 1O   
DIHE 1HA 1CA 1C 2N   1HA 1CA 1C 1O   
DIHE 1CA 1C 2N 2CA   1CA 1C 2N 2HN  
DIHE 1O 1C 2N 2CA   1O 1C 2N 2HN  
DIHE 1C 2N 2CA 2C   1C 2N 2CA 2HA  1C 2N 2CA 2CB
DIHE 2HN 2N 2CA 2C   2HN 2N 2CA 2HA  2HN 2N 2CA 2CB
IMPH 1C 1CA 2N 1O  2N 1C 2CA 2HN

!IC  1N 1CA 1C 2N    0.00 0.00 180.00 0.00 0.00
!IC  1CA 1C 2N 2CA   0.00 0.00 180.00 0.00 0.00
!IC  1C 2N 2CA 2C    0.00 0.00 180.00 0.00 0.00
IC 2N 1CA *1C 1O    1.3556 116.82 180.00 122.51 1.2292
IC  1C 2CA *2N 2HN  1.3550 126.78 -180 115.33 0.9930