1 ; Amber forcefield converted to Gromacs
2 ; from file /usr/slocal/amber6/dat/parm98.dat
4 ; PARM94 for DNA, RNA and proteins with TIP3P Water. USE SCEE=1.2 in energy progs
7 ; H-bond params not implemented
8 ; NOTE: all H-bond (10-12) parameters are Zero
10 ; LJ 6-12 equivalent atom symbols
11 ; N NA N2 N* NC NB N3 NP NO (9)
12 ; C C* CA CB CC CN CM CK CQ CW CV CR CA CX CY CD (16)
14 ; Define LJ 6-12 parameter types:
15 #define alj_H 0.06 0.0657328
17 #define alj_HS 0.06 0.0657328
18 #define alj_HC 0.1487 0.0657328
19 #define alj_H1 0.1387 0.0657328
20 #define alj_H2 0.1287 0.0657328
21 #define alj_H3 0.1187 0.0657328
22 #define alj_HP 0.11 0.0657328
23 #define alj_HA 0.1459 0.062802
24 #define alj_H4 0.1409 0.062802
25 #define alj_H5 0.1359 0.062802
27 #define alj_O 0.16612 0.879228
28 #define alj_O2 0.16612 0.879228
29 #define alj_OW 0.17683 0.636394
30 #define alj_OH 0.1721 0.880903
31 #define alj_OS 0.16837 0.711756
32 #define alj_CT 0.1908 0.458036
33 #define alj_CA 0.1908 0.360065
34 #define alj_CM 0.1908 0.360065
35 #define alj_C 0.1908 0.360065
36 #define alj_N 0.1824 0.711756
37 #define alj_S 0.2 1.0467
38 #define alj_SH 0.2 1.0467
39 #define alj_P 0.21 0.83736
40 #define alj_IM 0.247 0.41868
41 #define alj_Li 0.1137 0.0766184
42 #define alj_IP 0.1868 0.0115974
43 #define alj_K 0.2658 0.00137327
44 #define alj_Rb 0.2956 0.000711756
45 #define alj_Cs 0.3395 0.000337456
46 #define alj_I 0.235 1.67472
47 #define alj_F 0.175 0.255395
48 #define alj_IB 0.5 0.41868
51 ;name mass q tp sigma/epsilon
52 BR 79.9 0 A alj_BR ; bromine
53 C 12.01 0 A alj_C ; sp2 C carbonyl group
54 CA 12.01 0 A alj_C ; sp2 C pure aromatic (benzene)
55 CB 12.01 0 A alj_C ; sp2 aromatic C, 5&6 membered ring junction
56 CC 12.01 0 A alj_C ; sp2 aromatic C, 5 memb. ring HIS
57 CK 12.01 0 A alj_C ; sp2 C 5 memb.ring in purines
58 CM 12.01 0 A alj_C ; sp2 C pyrimidines in pos. 5 & 6
59 CN 12.01 0 A alj_C ; sp2 C aromatic 5&6 memb.ring junct.(TRP)
60 CQ 12.01 0 A alj_C ; sp2 C in 5 mem.ring of purines between 2 N
61 CR 12.01 0 A alj_C ; sp2 arom as CQ but in HIS
62 CT 12.01 0 A alj_CT ; sp3 aliphatic C
63 CV 12.01 0 A alj_C ; sp2 arom. 5 memb.ring w/1 N and 1 H (HIS)
64 CW 12.01 0 A alj_C ; sp2 arom. 5 memb.ring w/1 N-H and 1 H (HIS)
65 C* 12.01 0 A alj_C ; sp2 arom. 5 memb.ring w/1 subst. (TRP)
66 C0 40.08 0 A alj_C0 ; calcium
67 F 19 0 A alj_F ; fluorine
68 H 1.008 0 A alj_H ; H bonded to nitrogen atoms
69 HC 1.008 0 A alj_HC ; H aliph. bond. to C without electrwd.group
70 H1 1.008 0 A alj_H1 ; H aliph. bond. to C with 1 electrwd. group
71 H2 1.008 0 A alj_H2 ; H aliph. bond. to C with 2 electrwd.groups
72 H3 1.008 0 A alj_H3 ; H aliph. bond. to C with 3 eletrwd.groups
73 HA 1.008 0 A alj_HA ; H arom. bond. to C without elctrwd. groups
74 H4 1.008 0 A alj_H4 ; H arom. bond. to C with 1 electrwd. group
75 H5 1.008 0 A alj_H5 ; H arom. bond. to C with 2 electrwd. groups
76 HO 1.008 0 A alj_HO ; hydroxyl group
77 HS 1.008 0 A alj_HS ; hydrogen bonded to sulphur
78 HW 1.008 0 A alj_HW ; H in TIP3P water
79 HP 1.008 0 A alj_HP ; H bonded to C next to positively charged gr
80 I 126.9 0 A alj_I ; iodine
81 IM 35.45 0 A alj_IM ; assumed to be Cl-
82 IP 22.99 0 A alj_IP ; assumed to be Na+
83 IB 131 0 A alj_IB ; 'big ion w/ waters' for vacuum (Na+, 6H2O)
84 MG 24.305 0 A alj_MG ; magnesium
85 N 14.01 0 A alj_N ; sp2 nitrogen in amide groups
86 NA 14.01 0 A alj_N ; sp2 N in 5 memb.ring w/H atom (HIS)
87 NB 14.01 0 A alj_N ; sp2 N in 5 memb.ring w/LP (HIS,ADE,GUA)
88 NC 14.01 0 A alj_N ; sp2 N in 6 memb.ring w/LP (ADE,GUA)
89 N2 14.01 0 A alj_N ; sp2 N in amino groups
90 N3 14.01 0 A alj_N ; sp3 N for charged amino groups (Lys, etc)
91 N* 14.01 0 A alj_N ; sp2 N
92 O 16 0 A alj_O ; carbonyl group oxygen
93 OW 16 0 A alj_OW ; oxygen in TIP3P water
94 OH 16 0 A alj_OH ; oxygen in hydroxyl group
95 OS 16 0 A alj_OS ; ether and ester oxygen
96 O2 16 0 A alj_O2 ; carboxyl and phosphate group oxygen
97 P 30.97 0 A alj_P ; phosphate
98 S 32.06 0 A alj_S ; sulphur in disulfide linkage
99 SH 32.06 0 A alj_SH ; sulphur in cystine
100 CU 63.55 0 A alj_CU ; copper
101 FE 55 0 A alj_FE ; iron
102 Li 6.94 0 A alj_Li ; lithium
103 K 39.1 0 A alj_K ; potassium
104 Rb 85.47 0 A alj_Rb ; rubidium
105 Cs 132.91 0 A alj_Cs ; cesium
109 ; # H-bonds (10-12): 1
110 ; # equivalent 6-12: 2