[AMBER] CM parameters missing in Amber

From: Noureen Abdelrahman via AMBER <amber.ambermd.org>
Date: Tue, 6 Feb 2024 18:11:42 +0000

Hi,

I am trying to run an MD simulation for a biliverdin (ligand) bound to a protein system, using the ff19SB force field. However, when I run my tleap file, I get this error message for the CM molecules in my system. Has anyone parameterized this molecule before?

Thanks,
Noureen


/proj/pierilab/software/amber/cuda12.2_version/amber22/bin/teLeap: Error!

Could not find bond parameter for atom types: S - CM

        for atom SG at position 42.321000, -4.195000, 17.484000

        and atom CAC at position 42.271000, -5.667000, 18.332000.

Building angle parameters.


/proj/pierilab/software/amber/cuda12.2_version/amber22/bin/teLeap: Error!

Could not find angle parameter for atom types: S - CM - CM

        for atom SG at position 42.321000, -4.195000, 17.484000,

            atom CAC at position 42.271000, -5.667000, 18.332000,

        and atom CBC at position 42.998000, -6.719000, 17.994000.


/proj/pierilab/software/amber/cuda12.2_version/amber22/bin/teLeap: Error!

Could not find angle parameter for atom types: S - CM - CT

        for atom SG at position 42.321000, -4.195000, 17.484000,

            atom CAC at position 42.271000, -5.667000, 18.332000,

        and atom C3C at position 41.383000, -5.509000, 19.575000.


/proj/pierilab/software/amber/cuda12.2_version/amber22/bin/teLeap: Error!

Could not find angle parameter for atom types: 2C - S - CM

        for atom CB at position 40.786000, -3.743000, 16.703000,

            atom SG at position 42.321000, -4.195000, 17.484000,

        and atom CAC at position 42.271000, -5.667000, 18.332000.

Building proper torsion parameters.


/proj/pierilab/software/amber/cuda12.2_version/amber22/bin/teLeap: Error!

 ** No torsion terms for atom types: 2C-S-CM-CM

        for atom CB at position 40.786000, -3.743000, 16.703000,

            atom SG at position 42.321000, -4.195000, 17.484000,

            atom CAC at position 42.271000, -5.667000, 18.332000,

        and atom CBC at position 42.998000, -6.719000, 17.994000.


/proj/pierilab/software/amber/cuda12.2_version/amber22/bin/teLeap: Error!

 ** No torsion terms for atom types: 2C-S-CM-CT

        for atom CB at position 40.786000, -3.743000, 16.703000,

            atom SG at position 42.321000, -4.195000, 17.484000,

            atom CAC at position 42.271000, -5.667000, 18.332000,

        and atom C3C at position 41.383000, -5.509000, 19.575000.

Building improper torsion parameters.

old PREP-specified impropers:

 <JRA 148>: CBC C3C CAC -M

 <JRA 148>: CAC H28 CBC H29

 <JRA 148>: C2C NC C1C OC

 <JRA 148>: C1C C4C NC H20

 <JRA 148>: CHD C3C C4C NC

 <JRA 148>: C1D C4C CHD H30

 <JRA 148>: C2D CHD C1D ND

 <JRA 148>: C3D CHA C4D ND

 <JRA 148>: C4D C1A CHA H1

 <JRA 148>: C2A CHA C1A NA

 <JRA 148>: C1A C4A NA H3

 <JRA 148>: C3A CHB C4A NA

 <JRA 148>: C2A C4A C3A CMA

 <JRA 148>: C3A C1A C2A CAA

 <JRA 148>: CBA O1A CGA O2A

 <JRA 148>: C4A C1B CHB H12

 <JRA 148>: C2B CHB C1B NB

 <JRA 148>: C4B C1B NB H2

 <JRA 148>: C3B NB C4B OB

 <JRA 148>: C2B C4B C3B CAB

 <JRA 148>: C3B C1B C2B CMB

 <JRA 148>: C3B CBB CAB H17

 <JRA 148>: CAB H18 CBB H19

 <JRA 148>: C2D C4D C3D CAD

 <JRA 148>: C3D C1D C2D CMD

 <JRA 148>: CBD O2D CGD O1D

 total 526 improper torsions applied

 26 improper torsions in old prep form

Building H-Bond parameters.

Incorporating Non-Bonded adjustments.


/proj/pierilab/software/amber/cuda12.2_version/amber22/bin/teLeap: Warning!

Parameter file was not saved.

Quit


Exiting LEaP: Errors = 6; Warnings = 2; Notes = 1.
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Received on Tue Feb 06 2024 - 10:30:02 PST
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