[gmx-users] How to combine Slipid FF with amber FF?

Yorquant Wang wangykoo at gmail.com
Mon Sep 1 15:55:41 CEST 2014


Hi,
     Thank you for your reply. I have added the parameters from Slipid to
amber FF files (including: atomtypes.atp, ffbonded.itp, ffnonbonded.itp). I
also get such an error.
 ERROR 1 [file ffbonded.itp, line 410]:
  Not enough atomtypes (1 instead of 3)

I just patch two atomtypes.atp (one from amber and another one from Slipid)
together. Could you give me some seggestions? thanks !


2014-08-31 21:13 GMT+08:00 rajat desikan <rajatdesikan at gmail.com>:

> Hi,
> I assumed that you had gone through the forcefield.ff files on Slipids
> webpage. You need to include the following section at the end in your
> ffnonbonded.itp (some of the spaces may be missing below). I suggest
> modifying a local copy of your desired Amber ff.
>
> ; SLIPIDS STARTS HERE
> HAL1    1       1.008000        0.09    A       0.235197261589  0.092048
> HL      1       1.008000        0.25    A       0.12472582054   0.192464
> HEL1    1       1.008000        0.15    A       0.2             0.10
>       ; New
> CL      6       12.01100        0.62    A       0.356359487256  0.29288
> CTL1    6       12.01100        0.14    A       0.405358916754  0.08368
> CTL3    6       12.0111        -0.081   A       0.35000         0.3400
>       ; New
> CTL2    6       12.0011          0.05   A       0.35800         0.22800
>      ; New
> HAL3    1       1.00800          0.09   A       0.22000         0.09500
>      ; New
> HAL2    1       1.00800          0.09   A       0.24000         0.1120
>       ; New
> CTL5    6       12.01100        -0.35   A       0.367050271874  0.33472
> CEL1    6       12.01100        -0.15   A       0.35            0.22
>       ; New
> CET1    6       12.01100        -0.15   A       0.35            0.22
>       ; New, for trans double-bond
> OBL     8       15.999400       -0.52   A       0.302905564168  0.50208
> OCL     8       15.999400       -0.76   A       0.302905564168  0.50208
> O2L     8       15.999400       -0.78   A       0.302905564168  0.50208
> OSL     8       15.999400       -0.49   A       0.293996576986  0.4184
>       ; Different to C27
> OSLP    8       15.999400       -0.57   A       0.293996576986  0.4184
>       ; Not in C27
> NTL     7       14.00700        -0.60   A       0.329632525712  0.8368
> PL      15      30.974000       1.50    A       0.3830864488    2.44764
> HOL     1       1.008000        0.43    A       0.0400013524445 0.192464
> OHL     8       15.999400       -0.66   A       0.315378146222  0.6363864
> NH3L    7       14.00700        -0.30   A       0.329632525712  0.8368
> HCL     1       1.008000        0.33    A       0.0400013524445 0.192464
> CCL     6       12.01100        0.34    A       0.356359487256  0.29288
> HBL     1       1.008000        0.10    A       0.235197261589  0.092048
> NH1     7       14.00700        -0.47   A       0.329632525712  0.8368
> H11     1       1.008000        0.31    A       0.0400013524445 0.192464
>
> [ pairtypes ]
> ; 1-4 interactions
> ; i     j       func    sigma1-4        epsilon1-4
> CTL1    CTL1    1       0.338541512893  0.04184
> CTL1    CTL2    1       0.338541512893  0.04184
> CTL1    CTL3    1       0.338541512893  0.04184
> CTL1    CTL5    1       0.338541512893  0.04184
> CTL1    OBL     1       0.293996576986  0.144938011577
> CTL1    HAL1    1       0.286869387241  0.06205874894
> CTL1    HAL2    1       0.288651184678  0.0700117110204
> CTL1    HAL3    1       0.288651184678  0.0648182492821
> CTL1    HL      1       0.231633666716  0.0897368027066
> CTL1    HEL1    1       0.280633096214  0.0736669217492
> CTL1    CEL1    1       0.355468588538  0.109105371453
> CTL1    CET1    1       0.355468588538  0.109105371453
> CTL1    OSL     1       0.316269044940  0.132309697301
> CTL1    OSLP    1       0.316269044940  0.132309697301
> CTL1    NTL     1       0.334087019303  0.187114168357
> CTL1    PL      1       0.360813980846  0.320014464673
> CTL1    HOL     1       0.189271432669  0.0897368027066
> CTL1    OHL     1       0.326959829558  0.163176
> ;
> CTL2    CTL2    1       0.321   0.08184                         ; New
> CTL2    HAL2    1       0.268651184678  0.0200117110204         ; New
> CTL2    CTL3    1       0.325   0.10184                         ; New
> CTL3    HAL2    1       0.278651184678  0.0200117110204         ; New
> CTL2    CTL5    1       0.338541512893  0.04184
> CTL2    OBL     1       0.293996576986  0.144938011577
> CTL2    HAL1    1       0.286869387241  0.06205874894
> CTL2    HAL3    1       0.288651184678  0.0648182492821
> CTL2    HL      1       0.231633666716  0.0897368027066
> CTL2    HEL1    1       0.280633096214  0.0736669217492
> CTL2    CL      1       0.347450500074  0.110698234855
> CTL2    CEL1    1       0.355468588538  0.109105371453
> CTL2    CET1    1       0.355468588538  0.109105371453
> CTL2    OCL     1       0.320723538531  0.144938011577
> CTL2    O2L     1       0.320723538531  0.144938011577
> CTL2    OSL     1       0.316269044940  0.132309697301
> CTL2    OSLP    1       0.316269044940  0.132309697301
> CTL2    NTL     1       0.334087019303  0.187114168357
> CTL2    PL      1       0.360813980846  0.320014464673
> CTL2    HOL     1       0.189271432669  0.0897368027066
> CTL2    OHL     1       0.326959829558  0.163176
> CTL2    HCL     1       0.189271432669  0.0897368027066
> CTL2    NH3L    1       0.334087019303  0.187114168357
> CTL2    OCL     1       0.320723538531  0.144938011577
> CTL2    HCL     1       0.189271432669  0.0897368027066
> ;
> CTL3    CTL3    1       0.338541512893  0.04184
> CTL3    CTL5    1       0.338541512893  0.04184
> CTL3    OBL     1       0.293996576986  0.144938011577
> CTL3    HL      1       0.231633666716  0.0897368027066
> CTL3    HEL1    1       0.280633096214  0.0736669217492
> CTL3    CL      1       0.347450500074  0.110698234855
> CTL3    CEL1    1       0.355468588538  0.109105371453
> CTL3    CET1    1       0.355468588538  0.109105371453
> CTL3    O2L     1       0.320723538531  0.144938011577
> CTL3    OSL     1       0.316269044940  0.132309697301
> CTL3    OSLP    1       0.316269044940  0.132309697301
> CTL3    NTL     1       0.334087019303  0.187114168357
> CTL3    PL      1       0.360813980846  0.320014464673
> CTL3    HOL     1       0.189271432669  0.0897368027066
> CTL3    OHL     1       0.326959829558  0.163176
> ;
> CTL5     CTL5   1       0.338541512893  0.04184
> CTL5     OBL            1       0.293996576986  0.144938011577
> CTL5     HAL1   1       0.286869387241  0.06205874894
> CTL5     HAL2   1       0.288651184678  0.0700117110204
> CTL5     HAL3   1       0.288651184678  0.0648182492821
> CTL5     HL             1       0.231633666716  0.0897368027066
> CTL5     HEL1   1       0.280633096214  0.0736669217492
> CTL5     CL             1       0.347450500074  0.110698234855
> CTL5     CEL1   1       0.355468588538  0.109105371453
> CTL5     CET1   1       0.355468588538  0.109105371453
> CTL5     OCL     1      0.320723538531  0.144938011577
> CTL5     O2L    1       0.320723538531  0.144938011577
> CTL5     OSL    1       0.316269044940  0.132309697301
> CTL5     OSLP   1       0.316269044940  0.132309697301
> CTL5    NTL     1       0.334087019303  0.187114168357
> CTL5     PL     1       0.360813980846  0.320014464673
> ;
> OBL     OBL     1       0.249451641079  0.50208
> OBL     HAL1    1       0.242324451334  0.214977812437
> OBL     HAL2    1       0.24410624877   0.242527681224
> OBL     HAL3    1       0.24410624877   0.224537002029
> OBL     HL      1       0.18708873081   0.310857403193
> OBL     HEL1    1       0.236088160307  0.255189702614
> OBL     CL      1       0.302905564167  0.383469934154
> OBL     CEL1    1       0.310923652631  0.377952093472
> OBL     CET1    1       0.310923652631  0.377952093472
> OBL     OCL     1       0.276178602624  0.50208
> OBL     O2L     1       0.276178602624  0.50208
> OBL     OSL     1       0.271724109033  0.45833423612
> OBL     OSLP    1       0.271724109033  0.45833423612
> OBL     NTL     1       0.289542083396  0.648182492821
> OBL     PL      1       0.316269044939  1.10856262394
>
> Similarly, you have to make changes in the ffbonded.itp as well (add
> bond, angle, proper and improper dihedral definitions). Go through the
> Slipid forcefield.ff files carefully.
> --
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-- 
Yukun Wang
PhD candidate
Institute of Natural Sciences && College of Life Science, Shanghai Jiao
Tong University
Cell phone: 13621806236.
China Shanghai


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