This file is indexed.

/usr/share/gromacs/top/gromos53a5.ff/ffbonded.itp is in gromacs-data 5.0.2-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
; Table 2.5.2.1
;       GROMOS bond-stretching parameters
;
;
;	Bond type code
;	Force constant
;	Ideal bond length
;	Examples of usage in terms of non-bonded atom types
;
;
;	ICB(H)[N]    CB[N] B0[N]
;
#define gb_1        0.1000  1.5700e+07
; H  -  OA      750     
;
#define gb_2        0.1000  1.8700e+07
; H  -  N (all) 895     
;
#define gb_3        0.1090  1.2300e+07
; HC  -  C      700     
;
#define gb_4         0.112  3.7000e+07
; C - O (CO in heme)  2220
;
#define gb_5        0.1230  1.6600e+07
; C  - O        1200    
;
#define gb_6        0.1250  1.3400e+07
; C  - OM       1000    
;
#define gb_7        0.1320  1.2000e+07
; CR1  -  NR (6-ring)   1000    
;
#define gb_8        0.1330  8.8700e+06
; H  -  S       750     
;
#define gb_9        0.1330  1.0600e+07
; C  -  NT, NL  900     
;
#define gb_10       0.1330  1.1800e+07
; C, CR1  -  N, NR, CR1, C (peptide, 5-ring)       1000    
;
#define gb_11       0.1340  1.0500e+07
; C  -  N, NZ, NE       900     
;
#define gb_12       0.1340  1.1700e+07
; C  -  NR (no H) (6-ring)      1000    
;
#define gb_13       0.1360  1.0200e+07
; C  -  OA      900     
;
#define gb_14       0.1380  1.1000e+07
; C  -  NR (heme)       1000    
;
#define gb_15       0.1390  8.6600e+06
; CH2  -  C, CR1 (6-ring)       800     
;
#define gb_16       0.1390  1.0800e+07
; C, CR1  -  CH2, C, CR1 (6-ring)       1000    
;
#define gb_17       0.1400  8.5400e+06
; C, CR1, CH2  -  NR (6-ring)   800     
;
#define gb_18       0.1430  8.1800e+06
; CHn  -  OA    800     
;
#define gb_19       0.1430  9.2100e+06
; CHn  -  OM    900     
;
#define gb_20       0.1435  6.1000e+06
; CHn  -  OA (sugar)    600     
;
#define gb_21       0.1470  8.7100e+06
; CHn  -  N, NT, NL, NZ, NE     900     
;
#define gb_22       0.1480  5.7300e+06
; CHn  -  NR (5-ring)   600     
;
#define gb_23       0.1480  7.6400e+06
; CHn  -   NR (6-ring)  800     
;
#define gb_24       0.1480  8.6000e+06
; O, OM  -   P     900     
;
#define gb_25       0.1500  8.3700e+06
; O  -  S       900     
;
#define gb_26       0.1520  5.4300e+06
; CHn  -   CHn (sugar)  600     
;
#define gb_27       0.1530  7.1500e+06
; C, CHn  -   C, CHn    800     
;
#define gb_28       0.1610  4.8400e+06
; OA  -   P     600     
;
#define gb_29       0.1630  4.7200e+06
; OA  -   SI    600     
;
#define gb_30       0.1780  2.7200e+06
; FE  -  C (Heme)
;
#define gb_31       0.1780  5.9400e+06
; CH3  -   S    900     
;
#define gb_32       0.1830  5.6200e+06
; CH2  -   S    900     
;
#define gb_33       0.1870  3.5900e+06
; CH1  -   SI   600     
;
#define gb_34        0.198  0.6400e+06
; NR  -   FE    120    
;
#define gb_35        0.200  0.6280e+06
; NR (heme)  -  FE   120
;
#define gb_36       0.2040  5.0300e+06
; S  -   S      1000    
;
#define gb_37        0.221  0.5400e+06
; NR  -  FE     126
;
#define gb_38       0.1000  2.3200e+07
; HWat  -   OWat        1110    
;
#define gb_39       0.1100  1.2100e+07
; HChl  -   CChl        700     
;
#define gb_40       0.1758  8.1200e+06
; CChl  -   CLChl       1200    
;
#define gb_41       0.1530  8.0400e+06
; ODmso  -   SDmso      900     
;
#define gb_42     0.193799  4.9500e+06
; SDmso  -   CDmso      890     
;
#define gb_43       0.1760  8.1000e+06
; CCl4  -   CLCl4       1200    
;
#define gb_44       0.1265  1.3100e+07
; CUrea  -  OUrea       1000
;
#define gb_45        0.135  1.0300e+07
; CUrea  -  NUrea       900
;
#define gb_46     0.163299  8.7100e+06
; HWat  -   HWat        1110    
;
#define gb_47     0.233839  2.6800e+06
; HChl  -   CLChl        700    
;
#define gb_48     0.290283  2.9800e+06
; CLChl -   CLChl       1200    
;
#define gb_49     0.279388  2.3900e+06
; ODmso -   CDmso        890    
;
#define gb_50     0.291189  2.1900e+06
; CDmso -   CDmso        890    
;
#define gb_51       0.2077  3.9700e+06
; HMet  -   CMet         820    
;
#define gb_52     0.287407  3.0400e+06
; CLCl4 -   CLCl4       1200    
;
;---
;       Table 2.5.3.1.
;       GROMOS bond-angle bending parameters
; 
; 
; Bond-angle type code
; Force constant
; Ideal bond angle
; Example of usage in terms of non-bonded atom types
; 
; 
;  ICT(H)[N]  CT[N]  (T0[N])
;
#define ga_1         90.00      380.00
; NR(heme)  -  FE  -  C          90
;
#define ga_2         90.00      420.00
; NR(heme)  -  FE  -  NR(heme)  100     
;
#define ga_3         96.00      405.00
; H  -  S  -  CH2       95      
;
#define ga_4        100.00      475.00
; CH2  -  S  -  CH3     110     
;
#define ga_5        103.00      420.00
; OA  -  P  -  OA       95      
;
#define ga_6        104.00      490.00
; CH2  -  S  -  S       110     
;
#define ga_7        108.00      465.00
; NR, C, CR1(5-ring)    100     
;
#define ga_8        109.50      285.00
; CHn  - CHn - CHn, NR(6-ring) (sugar)  60      
;
#define ga_9        109.50      320.00
; CHn, OA  - CHn  - OA, NR(ring) (sugar)        68      
;
#define ga_10       109.50      380.00
; H -  NL, NT  -  H, CHn  - OA  - CHn(sugar)    80      
;
#define ga_11       109.50      425.00
; H  -  NL  -  C, CHn          H  -  NT  -  CHn 90      
;
#define ga_12       109.50      450.00
; X  -  OA, SI  -  X    95      
;
#define ga_13       109.50      520.00
; CHn,C  -  CHn  -  C, CHn, OA, OM, N, NE       110     
;
#define ga_14       109.60      450.00
; OM  -  P  -  OA       95      
;
#define ga_15       111.00      530.00
; CHn  -  CHn  -  C, CHn, OA, NR, NT, NL        110     
;
#define ga_16       113.00      545.00
; CHn  -  CH2  -  S     110     
;
#define ga_17       115.00       50.00
; NR(heme)  -  FE  - NR 10      
;
#define ga_18       115.00      460.00
; H  -  N  -  CHn       90      
;
#define ga_19       115.00      610.00
; CHn, C  -  C  -  OA, N, NT, NL        120     
;
#define ga_20       116.00      465.00
; H  -  NE  -  CH2      90      
;
#define ga_21       116.00      620.00
; CH2  -  N  -  CH1     120     
;
#define ga_22       117.00      635.00
; CH3 -  N  -  C, CHn  - C  - OM        120     
;
#define ga_23       120.00      390.00
; H  -  NT, NZ, NE  -  C        70      
;
#define ga_24       120.00      445.00
; H  -  NT, NZ  -  H    80      
;
#define ga_25       120.00      505.00
; H - N - CH3, H, HC - 6-ring, H - NT - CHn     90      
;
#define ga_26       120.00      530.00
; P, SI  -  OA  -  CHn, P       95      
;
#define ga_27       120.00      560.00
; N, C, CR1 (6-ring, no H)      100     
;
#define ga_28       120.00      670.00
; NZ  -  C  -  NZ, NE   120     
;
#define ga_29       120.00      780.00
; OM  - P  -  OM        140     
;
#define ga_30       121.00      685.00
; O  -  C  -  CHn, C          CH3  -  N  -  CHn 120     
;
#define ga_31       122.00      700.00
; CH1, CH2  -  N  -  C  120     
;
#define ga_32       123.00      415.00
; H  - N  - C   70      
;
#define ga_33       124.00      730.00
; O  - C  - OA, N, NT, NL   C - NE - CH2        120     
;
#define ga_34       125.00      375.00
; FE  - NR  - CR1 (5-ring)      60      
;
#define ga_35       125.00      750.00
; -     120     
;
#define ga_36       126.00      575.00
; H, HC  - 5-ring       90      
;
#define ga_37       126.00      640.00
; X(noH)  - 5-ring      100     
;
#define ga_38       126.00      770.00
; OM  - C  - OM 120     
;
#define ga_39       132.00      760.00
; 5, 6 ring connnection 100     
;
#define ga_40       155.00     2215.00
; SI  - OA  - SI        95      
;
#define ga_41       180.00    91350.00
; Fe  -  C  -  O (heme) 57
;
#define ga_42       109.50      434.00
; HWat  - OWat  - HWat  92      
;
#define ga_43       107.57      484.00
; HChl  - CChl  - CLChl 105     
;
#define ga_44       111.30      632.00
; CLChl  - CChl  - CLChl        131     
;
#define ga_45        97.40      469.00
; CDmso  - SDmso  - CDmso       110     
;
#define ga_46       106.75      503.00
; CDmso  - SDmso  -  ODmso      110     
;
#define ga_47       108.53      443.00
; HMet  - OMet  - CMet  95      
;
#define ga_48       109.50      618.00
; CLCl4  - CCl4  - CLCl4        131     
;
#define ga_49       107.60      507.00
; FTFE  -  CTFE  -  FTFE        100
;
#define ga_50       109.50      448.00
; HTFE  -  OTFE  -  CHTFE        85
;
#define ga_51        110.3      524.00
; OTFE  -  CHTFE  -  CTFE        97
;
#define ga_52        111.4      532.00
; CHTFE  -  CTFE  -  FTFE        95
;
#define ga_53        117.2      636.00
; NUrea  -  CUrea  -  NUrea     120
;
#define ga_54        121.4      690.00
; OUrea  -  CUrea  -  NUrea     120
;
;       Table 2.5.4.1
;       GROMOS improper (harmonic) dihedral angle parameters
; 
; 
; Improper dihedral-angle type code
; Force constant
; Ideal improper dihedral angle
; Example of usage
; 
; 
; ICQ(H)[N] CQ[N] (Q0[N])
;
#define gi_1           0.0   167.42309
; planar groups 40      
;
#define gi_2      35.26439   334.84617
; tetrahedral centres   80      
;
#define gi_3           0.0   669.69235
; heme iron     160     
;
;       Table 2.5.5.1 (Note: changes with respect to the 43A1 table)
;       GROMOS (trigonometric) dihedral torsional angle parameters
; 
; 
; Dihedral-angle type code
; Force constant
; Phase shift
; Multiplicity
; Example of usage in terms of non-bonded atom types
; 
; 
; ICP(H)[N]  CP[N] PD[N] NP[N]
; 
#define gd_1    180.000       2.67          1
; CHn-CHn-CHn-OA (sugar)  0.6
;
#define gd_2    180.000       3.41          1
; OA-CHn-OA-CHn,H (beta sugar) 0.8
;
#define gd_3    180.000       4.97          1
; OA-CHn-CHn-OA (sugar)	1.2
;
#define gd_4    180.000       5.86          1
; N-CHn-CHn-OA (lipid)	1.4
;
#define gd_5    180.000       9.35          1
; OA-CHn-CHn-OA (sugar)	2.2
;
#define gd_6    180.000       9.45          1
; OA-CHn-OA-CHn,H (alpha sugar)  2.3
;
#define gd_7      0.000       2.79          1
; P-O5*-C5*-C4* (dna)	0.7
;
#define gd_8      0.000       5.35          1
; O5*-C5*-C4*-O4* (dna)	1.3
;
#define gd_9    180.000       1.53          2
; C1-C2-CAB-CBB	(heme)	0.4
;
#define gd_10   180.000       5.86          2
; -C-C-	1.4
;
#define gd_11   180.000       7.11          2
; -C-OA,OE- (at ring)	1.7
;
#define gd_12   180.000       16.7          2
; -C-OA,OE- (carboxyl)	4.0
;
#define gd_13   180.000       24.0          2
; CHn-OE-C-CHn (ester lipid)	5.7
;
#define gd_14   180.000       33.5          2
; -C-N,NT,NE,NZ,NR-	8.0
;
#define gd_15   180.000       41.8          2
; -C-CR1- (6-ring)	10.0
;
#define gd_16     0.000        0.0          2
; -CH1(sugar)-NR(base)	0.0
;
#define gd_17     0.000      0.418          2
; O-CH1-CHn-no O	0.1
;
#define gd_18     0.000       2.09          2
; O-CH1-CHn-O	0.5
;
#define gd_19     0.000       3.14          2
; -OA-P-	0.75
;
#define gd_20     0.000       5.09          2
; O-P-O- (dna, lipids)	1.2
;
#define gd_21     0.000       16.7          2
; -S-S-	4.0
;
#define gd_22     0.000       1.05          3
; -OA-P-	0.25
;
#define gd_23     0.000       1.26          3
; -CHn-OA(no sugar)- 0.3
;
#define gd_24     0.000       1.30          3
; HTFE-OTFE-CHTFE-CTFE	0.3
;
#define gd_25     0.000       2.53          3
; O5*-C5*-C4*-O4* (dna)	0.6
;
#define gd_26     0.000       2.93          3
; -CH2-S-	0.7
;
#define gd_27     0.000       3.19          3
; O-P-O- (dna, lipids)	0.8
;
#define gd_28     0.000       3.65          3
; OA-CHn-OA-CHn,H (alpha sugar)	0.9
;
#define gd_29     0.000       3.77          3
; -C,CHn,SI-	0.9
;
#define gd_30     0.000       3.90          3
; CHn-CHn-OA-H (sugar)	0.9
;
#define gd_31     0.000       4.18          3
; HC-C-S-	1.0
;
#define gd_32     0.000       4.69          3
; AO-CHn-OA-CHn,H (beta sugar)
;
#define gd_33     0.000       5.44          3
; HC-C-C-	1.3
;
#define gd_34     0.000       5.92          3
; -CHn,SI-CHn-	1.4
;
#define gd_35     0.000       7.69          3
; OA-CHn-CHn-OA (sugar)	1.8
;
#define gd_36     0.000       8.62          3
; N-CHn-CHn-OA (lipid)	2.1
;
#define gd_37     0.000       9.50          3
; OA-CHn-CHn-OA (sugar)	2.3
;
#define gd_38     0.000        0.0          4
; -NR-FE-	0.0
;
#define gd_39   180.000        1.0          6
; -CHn-N,NE-	0.24
;
#define gd_40     0.000        1.0          6
; -CHn-C,NR(ring), CR1-	0.24
;
#define gd_41     0.000       3.77          6
; -CHn-NT-	0.9
;
; get the constraint distances for dummy atom constructions
 
#include "ff_dum.itp"
 
[ constrainttypes ]
; now the constraints for the rigid NH3 groups
 MNH3    C    2   DC_MNC1
 MNH3  CH1    2   DC_MNC2
 MNH3  CH2    2   DC_MNC2
 MNH3 MNH3    2   DC_MNMN
; and the angle-constraints for OH and SH groups in proteins:
  CH2    H    2   DC_CO
  CH1    H    2   DC_CO
    C    H    2   DC_CO
    P    H    2   DC_PO
                                                                             
; bond-, angle- and dihedraltypes for specbonds:
[ bondtypes ]
S      S       2    gb_36
NR     FE      2    gb_34

[ angletypes ]
CH1    CH2    S     2   ga_16
CH2    S      S     2   ga_6
CR1    NR    FE     2	ga_34
NR     FE    NR     2   ga_17

[ dihedraltypes ]
S      S      1   gd_21
NR     FE     1   gd_38
CH2    S      1   gd_26