Re: [gmx-users] parameters of GppNHp
Hi, You should add "-nc" option to your antechamber command, which specifies the net charge of your unit. You can type "antechamber -h" command to get more information. On 30 September 2016 at 16:47, Mark Abraham wrote: > Hi, > > You'll probably have better luck getting help with how to use AmberTools > from the AmberTools documentation and the Amber mailing list. And search > Google for that error message first, because it's probably been seen > before. > > Mark > > On Fri, Sep 30, 2016 at 10:44 AM Anu George wrote: > > > Hi everyone, > > I am trying to do a simulation of "RAS G12V - PI 3-KINASE GAMMA COMPLEX" > > which has the ligands 'GNP' and Mg2+. For GNP i tried to create the > > topology by using antechamber giving input as GNP.pdb which was extracted > > from the pdb file (1he8.pdb) but it is giving the error as > > Error: cannot run "/home/anugeorge/amber16/bin/sqm -O -i sqm.in -o > > sqm.out" of bcc() in charge.c properly, exit" when I run the command > > antechamber -i GNP.pdb -fi pdb -fo ac -o GNP.ac -c bcc -s 2 -ek > > grms_tol=0.005 > > > > Please suggest a way to overcome this error" > > Thanks in advance > > Anu George > > > > - Original Message - > > From: "Dd H" > > To: gmx-us...@gromacs.org > > Sent: Wednesday, September 21, 2016 6:12:54 PM > > Subject: Re: [gmx-users] parameters of GppNHp > > > > Hi Anu, > > Not very sure what is your trouble. I can figure out two ways to get the > > GppNHp parameters: > > 1). Since GppNHp is very similar to GTP. We can borrow the most of > > parameters from GTP (you can find GTP parameters in AMBER parameter > > database), then derive the rest missing parameters or borrow them from > GAFF > > (I don't know whether it's right to mix them up in a molecule). > > 2). Using GAFF entirely. > > > > Best regards, > > Dading > > > > On 20 September 2016 at 23:54, Justin Lemkul wrote: > > > > > > > > > > > On 9/19/16 11:18 PM, Anu George wrote: > > > > > >> Hi everyone, > > >> I am also working on simulation a protein-protein complex which has > the > > >> ligand GppNHp molecule and an analogue of GTP. > > >> I tried to build the topology using GAFF and antechamber. but it was > not > > >> working. > > >> Please provide the details for obtaining the same > > >> > > >> > > > You'll have to explain better what exactly you did and what didn't > work. > > > "It was not working" is a useless statement in any scientific field. > > What > > > did you do? What failed? If it's a problem with some external > > > program/server, you need to consult its documentation, FAQs, and > contact > > > its developer(s) for help. If it's a GROMACS problem (specific error > > > message, difficulty putting parameters in the right format, etc) then > > > describe the situation completely. > > > > > > -Justin > > > > > > > > > Dading Huang- if you are able to create the topology and coordinate > file > > >> for the same please share the details > > >> > > >> Thanks in advance > > >> Anu George > > >> > > >> - Original Message - > > >> From: "Dd H" > > >> To: gmx-us...@gromacs.org > > >> Sent: Monday, September 19, 2016 6:59:01 AM > > >> Subject: Re: [gmx-users] parameters of GppNHp > > >> > > >> Thank you. I have found a tutorial and I will try to derive them. > > >> > > >> On 19 September 2016 at 00:40, Justin Lemkul wrote: > > >> > > >> > > >>> > > >>> On 9/18/16 3:37 AM, Dd H wrote: > > >>> > > >>> Hi everyone, > > >>>> I want to simulate a protein-ligand complex. The ligand is a GppNHp > > >>>> molecule and an analogue of GTP. I cannot find parameters of GppNHp > in > > >>>> AMBER parameter database (parameters of GTP are supplied there). Can > > you > > >>>> tell me how to get the parameters of GppNHp? Thank you in advance! > > >>>> > > >>>> > > >>>> Derive them in a manner consistent with the parent AMBER force > field. > > >>> There are lots of ways to start going about this, e.g. online > servers, > > >>> GAFF,
Re: [gmx-users] parameters of GppNHp
Hi, You'll probably have better luck getting help with how to use AmberTools from the AmberTools documentation and the Amber mailing list. And search Google for that error message first, because it's probably been seen before. Mark On Fri, Sep 30, 2016 at 10:44 AM Anu George wrote: > Hi everyone, > I am trying to do a simulation of "RAS G12V - PI 3-KINASE GAMMA COMPLEX" > which has the ligands 'GNP' and Mg2+. For GNP i tried to create the > topology by using antechamber giving input as GNP.pdb which was extracted > from the pdb file (1he8.pdb) but it is giving the error as > Error: cannot run "/home/anugeorge/amber16/bin/sqm -O -i sqm.in -o > sqm.out" of bcc() in charge.c properly, exit" when I run the command > antechamber -i GNP.pdb -fi pdb -fo ac -o GNP.ac -c bcc -s 2 -ek > grms_tol=0.005 > > Please suggest a way to overcome this error" > Thanks in advance > Anu George > > - Original Message - > From: "Dd H" > To: gmx-us...@gromacs.org > Sent: Wednesday, September 21, 2016 6:12:54 PM > Subject: Re: [gmx-users] parameters of GppNHp > > Hi Anu, > Not very sure what is your trouble. I can figure out two ways to get the > GppNHp parameters: > 1). Since GppNHp is very similar to GTP. We can borrow the most of > parameters from GTP (you can find GTP parameters in AMBER parameter > database), then derive the rest missing parameters or borrow them from GAFF > (I don't know whether it's right to mix them up in a molecule). > 2). Using GAFF entirely. > > Best regards, > Dading > > On 20 September 2016 at 23:54, Justin Lemkul wrote: > > > > > > > On 9/19/16 11:18 PM, Anu George wrote: > > > >> Hi everyone, > >> I am also working on simulation a protein-protein complex which has the > >> ligand GppNHp molecule and an analogue of GTP. > >> I tried to build the topology using GAFF and antechamber. but it was not > >> working. > >> Please provide the details for obtaining the same > >> > >> > > You'll have to explain better what exactly you did and what didn't work. > > "It was not working" is a useless statement in any scientific field. > What > > did you do? What failed? If it's a problem with some external > > program/server, you need to consult its documentation, FAQs, and contact > > its developer(s) for help. If it's a GROMACS problem (specific error > > message, difficulty putting parameters in the right format, etc) then > > describe the situation completely. > > > > -Justin > > > > > > Dading Huang- if you are able to create the topology and coordinate file > >> for the same please share the details > >> > >> Thanks in advance > >> Anu George > >> > >> - Original Message - > >> From: "Dd H" > >> To: gmx-us...@gromacs.org > >> Sent: Monday, September 19, 2016 6:59:01 AM > >> Subject: Re: [gmx-users] parameters of GppNHp > >> > >> Thank you. I have found a tutorial and I will try to derive them. > >> > >> On 19 September 2016 at 00:40, Justin Lemkul wrote: > >> > >> > >>> > >>> On 9/18/16 3:37 AM, Dd H wrote: > >>> > >>> Hi everyone, > >>>> I want to simulate a protein-ligand complex. The ligand is a GppNHp > >>>> molecule and an analogue of GTP. I cannot find parameters of GppNHp in > >>>> AMBER parameter database (parameters of GTP are supplied there). Can > you > >>>> tell me how to get the parameters of GppNHp? Thank you in advance! > >>>> > >>>> > >>>> Derive them in a manner consistent with the parent AMBER force field. > >>> There are lots of ways to start going about this, e.g. online servers, > >>> GAFF, antechamber, etc. > >>> > >>> -Justin > >>> > >>> -- > >>> == > >>> > >>> Justin A. Lemkul, Ph.D. > >>> Ruth L. Kirschstein NRSA Postdoctoral Fellow > >>> > >>> Department of Pharmaceutical Sciences > >>> School of Pharmacy > >>> Health Sciences Facility II, Room 629 > >>> University of Maryland, Baltimore > >>> 20 Penn St. > >>> Baltimore, MD 21201 > >>> > >>> jalem...@outerbanks.umaryland.edu | (410) 706-7441 > >>> http://mackerell.umaryland.edu/~jalemkul > &
Re: [gmx-users] parameters of GppNHp
Hi everyone, I am trying to do a simulation of "RAS G12V - PI 3-KINASE GAMMA COMPLEX" which has the ligands 'GNP' and Mg2+. For GNP i tried to create the topology by using antechamber giving input as GNP.pdb which was extracted from the pdb file (1he8.pdb) but it is giving the error as Error: cannot run "/home/anugeorge/amber16/bin/sqm -O -i sqm.in -o sqm.out" of bcc() in charge.c properly, exit" when I run the command antechamber -i GNP.pdb -fi pdb -fo ac -o GNP.ac -c bcc -s 2 -ek grms_tol=0.005 Please suggest a way to overcome this error" Thanks in advance Anu George - Original Message - From: "Dd H" To: gmx-us...@gromacs.org Sent: Wednesday, September 21, 2016 6:12:54 PM Subject: Re: [gmx-users] parameters of GppNHp Hi Anu, Not very sure what is your trouble. I can figure out two ways to get the GppNHp parameters: 1). Since GppNHp is very similar to GTP. We can borrow the most of parameters from GTP (you can find GTP parameters in AMBER parameter database), then derive the rest missing parameters or borrow them from GAFF (I don't know whether it's right to mix them up in a molecule). 2). Using GAFF entirely. Best regards, Dading On 20 September 2016 at 23:54, Justin Lemkul wrote: > > > On 9/19/16 11:18 PM, Anu George wrote: > >> Hi everyone, >> I am also working on simulation a protein-protein complex which has the >> ligand GppNHp molecule and an analogue of GTP. >> I tried to build the topology using GAFF and antechamber. but it was not >> working. >> Please provide the details for obtaining the same >> >> > You'll have to explain better what exactly you did and what didn't work. > "It was not working" is a useless statement in any scientific field. What > did you do? What failed? If it's a problem with some external > program/server, you need to consult its documentation, FAQs, and contact > its developer(s) for help. If it's a GROMACS problem (specific error > message, difficulty putting parameters in the right format, etc) then > describe the situation completely. > > -Justin > > > Dading Huang- if you are able to create the topology and coordinate file >> for the same please share the details >> >> Thanks in advance >> Anu George >> >> - Original Message - >> From: "Dd H" >> To: gmx-us...@gromacs.org >> Sent: Monday, September 19, 2016 6:59:01 AM >> Subject: Re: [gmx-users] parameters of GppNHp >> >> Thank you. I have found a tutorial and I will try to derive them. >> >> On 19 September 2016 at 00:40, Justin Lemkul wrote: >> >> >>> >>> On 9/18/16 3:37 AM, Dd H wrote: >>> >>> Hi everyone, >>>> I want to simulate a protein-ligand complex. The ligand is a GppNHp >>>> molecule and an analogue of GTP. I cannot find parameters of GppNHp in >>>> AMBER parameter database (parameters of GTP are supplied there). Can you >>>> tell me how to get the parameters of GppNHp? Thank you in advance! >>>> >>>> >>>> Derive them in a manner consistent with the parent AMBER force field. >>> There are lots of ways to start going about this, e.g. online servers, >>> GAFF, antechamber, etc. >>> >>> -Justin >>> >>> -- >>> == >>> >>> Justin A. Lemkul, Ph.D. >>> Ruth L. Kirschstein NRSA Postdoctoral Fellow >>> >>> Department of Pharmaceutical Sciences >>> School of Pharmacy >>> Health Sciences Facility II, Room 629 >>> University of Maryland, Baltimore >>> 20 Penn St. >>> Baltimore, MD 21201 >>> >>> jalem...@outerbanks.umaryland.edu | (410) 706-7441 >>> http://mackerell.umaryland.edu/~jalemkul >>> >>> == >>> -- >>> Gromacs Users mailing list >>> >>> * Please search the archive at http://www.gromacs.org/Support >>> /Mailing_Lists/GMX-Users_List before posting! >>> >>> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists >>> >>> * For (un)subscribe requests visit >>> https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or >>> send a mail to gmx-users-requ...@gromacs.org. >>> >>> > -- > == > > Justin A. Lemkul, Ph.D. > Ruth L. Kirschstein NRSA Postdoctoral Fellow > > Department of Pharmaceutical Sciences > School of Pharmacy > Health Sciences Facility II, Room 629 > Un
Re: [gmx-users] parameters of GppNHp
Hi Anu, Not very sure what is your trouble. I can figure out two ways to get the GppNHp parameters: 1). Since GppNHp is very similar to GTP. We can borrow the most of parameters from GTP (you can find GTP parameters in AMBER parameter database), then derive the rest missing parameters or borrow them from GAFF (I don't know whether it's right to mix them up in a molecule). 2). Using GAFF entirely. Best regards, Dading On 20 September 2016 at 23:54, Justin Lemkul wrote: > > > On 9/19/16 11:18 PM, Anu George wrote: > >> Hi everyone, >> I am also working on simulation a protein-protein complex which has the >> ligand GppNHp molecule and an analogue of GTP. >> I tried to build the topology using GAFF and antechamber. but it was not >> working. >> Please provide the details for obtaining the same >> >> > You'll have to explain better what exactly you did and what didn't work. > "It was not working" is a useless statement in any scientific field. What > did you do? What failed? If it's a problem with some external > program/server, you need to consult its documentation, FAQs, and contact > its developer(s) for help. If it's a GROMACS problem (specific error > message, difficulty putting parameters in the right format, etc) then > describe the situation completely. > > -Justin > > > Dading Huang- if you are able to create the topology and coordinate file >> for the same please share the details >> >> Thanks in advance >> Anu George >> >> - Original Message - >> From: "Dd H" >> To: gmx-us...@gromacs.org >> Sent: Monday, September 19, 2016 6:59:01 AM >> Subject: Re: [gmx-users] parameters of GppNHp >> >> Thank you. I have found a tutorial and I will try to derive them. >> >> On 19 September 2016 at 00:40, Justin Lemkul wrote: >> >> >>> >>> On 9/18/16 3:37 AM, Dd H wrote: >>> >>> Hi everyone, >>>> I want to simulate a protein-ligand complex. The ligand is a GppNHp >>>> molecule and an analogue of GTP. I cannot find parameters of GppNHp in >>>> AMBER parameter database (parameters of GTP are supplied there). Can you >>>> tell me how to get the parameters of GppNHp? Thank you in advance! >>>> >>>> >>>> Derive them in a manner consistent with the parent AMBER force field. >>> There are lots of ways to start going about this, e.g. online servers, >>> GAFF, antechamber, etc. >>> >>> -Justin >>> >>> -- >>> == >>> >>> Justin A. Lemkul, Ph.D. >>> Ruth L. Kirschstein NRSA Postdoctoral Fellow >>> >>> Department of Pharmaceutical Sciences >>> School of Pharmacy >>> Health Sciences Facility II, Room 629 >>> University of Maryland, Baltimore >>> 20 Penn St. >>> Baltimore, MD 21201 >>> >>> jalem...@outerbanks.umaryland.edu | (410) 706-7441 >>> http://mackerell.umaryland.edu/~jalemkul >>> >>> == >>> -- >>> Gromacs Users mailing list >>> >>> * Please search the archive at http://www.gromacs.org/Support >>> /Mailing_Lists/GMX-Users_List before posting! >>> >>> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists >>> >>> * For (un)subscribe requests visit >>> https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or >>> send a mail to gmx-users-requ...@gromacs.org. >>> >>> > -- > == > > Justin A. Lemkul, Ph.D. > Ruth L. Kirschstein NRSA Postdoctoral Fellow > > Department of Pharmaceutical Sciences > School of Pharmacy > Health Sciences Facility II, Room 629 > University of Maryland, Baltimore > 20 Penn St. > Baltimore, MD 21201 > > jalem...@outerbanks.umaryland.edu | (410) 706-7441 > http://mackerell.umaryland.edu/~jalemkul > > == > -- > Gromacs Users mailing list > > * Please search the archive at http://www.gromacs.org/Support > /Mailing_Lists/GMX-Users_List before posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
Re: [gmx-users] parameters of GppNHp
On 9/19/16 11:18 PM, Anu George wrote: Hi everyone, I am also working on simulation a protein-protein complex which has the ligand GppNHp molecule and an analogue of GTP. I tried to build the topology using GAFF and antechamber. but it was not working. Please provide the details for obtaining the same You'll have to explain better what exactly you did and what didn't work. "It was not working" is a useless statement in any scientific field. What did you do? What failed? If it's a problem with some external program/server, you need to consult its documentation, FAQs, and contact its developer(s) for help. If it's a GROMACS problem (specific error message, difficulty putting parameters in the right format, etc) then describe the situation completely. -Justin Dading Huang- if you are able to create the topology and coordinate file for the same please share the details Thanks in advance Anu George - Original Message - From: "Dd H" To: gmx-us...@gromacs.org Sent: Monday, September 19, 2016 6:59:01 AM Subject: Re: [gmx-users] parameters of GppNHp Thank you. I have found a tutorial and I will try to derive them. On 19 September 2016 at 00:40, Justin Lemkul wrote: On 9/18/16 3:37 AM, Dd H wrote: Hi everyone, I want to simulate a protein-ligand complex. The ligand is a GppNHp molecule and an analogue of GTP. I cannot find parameters of GppNHp in AMBER parameter database (parameters of GTP are supplied there). Can you tell me how to get the parameters of GppNHp? Thank you in advance! Derive them in a manner consistent with the parent AMBER force field. There are lots of ways to start going about this, e.g. online servers, GAFF, antechamber, etc. -Justin -- == Justin A. Lemkul, Ph.D. Ruth L. Kirschstein NRSA Postdoctoral Fellow Department of Pharmaceutical Sciences School of Pharmacy Health Sciences Facility II, Room 629 University of Maryland, Baltimore 20 Penn St. Baltimore, MD 21201 jalem...@outerbanks.umaryland.edu | (410) 706-7441 http://mackerell.umaryland.edu/~jalemkul == -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support /Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org. -- == Justin A. Lemkul, Ph.D. Ruth L. Kirschstein NRSA Postdoctoral Fellow Department of Pharmaceutical Sciences School of Pharmacy Health Sciences Facility II, Room 629 University of Maryland, Baltimore 20 Penn St. Baltimore, MD 21201 jalem...@outerbanks.umaryland.edu | (410) 706-7441 http://mackerell.umaryland.edu/~jalemkul == -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
Re: [gmx-users] parameters of GppNHp
Hi everyone, I am also working on simulation a protein-protein complex which has the ligand GppNHp molecule and an analogue of GTP. I tried to build the topology using GAFF and antechamber. but it was not working. Please provide the details for obtaining the same Dading Huang- if you are able to create the topology and coordinate file for the same please share the details Thanks in advance Anu George - Original Message - From: "Dd H" To: gmx-us...@gromacs.org Sent: Monday, September 19, 2016 6:59:01 AM Subject: Re: [gmx-users] parameters of GppNHp Thank you. I have found a tutorial and I will try to derive them. On 19 September 2016 at 00:40, Justin Lemkul wrote: > > > On 9/18/16 3:37 AM, Dd H wrote: > >> Hi everyone, >> I want to simulate a protein-ligand complex. The ligand is a GppNHp >> molecule and an analogue of GTP. I cannot find parameters of GppNHp in >> AMBER parameter database (parameters of GTP are supplied there). Can you >> tell me how to get the parameters of GppNHp? Thank you in advance! >> >> > Derive them in a manner consistent with the parent AMBER force field. > There are lots of ways to start going about this, e.g. online servers, > GAFF, antechamber, etc. > > -Justin > > -- > == > > Justin A. Lemkul, Ph.D. > Ruth L. Kirschstein NRSA Postdoctoral Fellow > > Department of Pharmaceutical Sciences > School of Pharmacy > Health Sciences Facility II, Room 629 > University of Maryland, Baltimore > 20 Penn St. > Baltimore, MD 21201 > > jalem...@outerbanks.umaryland.edu | (410) 706-7441 > http://mackerell.umaryland.edu/~jalemkul > > == > -- > Gromacs Users mailing list > > * Please search the archive at http://www.gromacs.org/Support > /Mailing_Lists/GMX-Users_List before posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org. -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
Re: [gmx-users] parameters of GppNHp
Thank you. I have found a tutorial and I will try to derive them. On 19 September 2016 at 00:40, Justin Lemkul wrote: > > > On 9/18/16 3:37 AM, Dd H wrote: > >> Hi everyone, >> I want to simulate a protein-ligand complex. The ligand is a GppNHp >> molecule and an analogue of GTP. I cannot find parameters of GppNHp in >> AMBER parameter database (parameters of GTP are supplied there). Can you >> tell me how to get the parameters of GppNHp? Thank you in advance! >> >> > Derive them in a manner consistent with the parent AMBER force field. > There are lots of ways to start going about this, e.g. online servers, > GAFF, antechamber, etc. > > -Justin > > -- > == > > Justin A. Lemkul, Ph.D. > Ruth L. Kirschstein NRSA Postdoctoral Fellow > > Department of Pharmaceutical Sciences > School of Pharmacy > Health Sciences Facility II, Room 629 > University of Maryland, Baltimore > 20 Penn St. > Baltimore, MD 21201 > > jalem...@outerbanks.umaryland.edu | (410) 706-7441 > http://mackerell.umaryland.edu/~jalemkul > > == > -- > Gromacs Users mailing list > > * Please search the archive at http://www.gromacs.org/Support > /Mailing_Lists/GMX-Users_List before posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
Re: [gmx-users] parameters of GppNHp
On 9/18/16 3:37 AM, Dd H wrote: Hi everyone, I want to simulate a protein-ligand complex. The ligand is a GppNHp molecule and an analogue of GTP. I cannot find parameters of GppNHp in AMBER parameter database (parameters of GTP are supplied there). Can you tell me how to get the parameters of GppNHp? Thank you in advance! Derive them in a manner consistent with the parent AMBER force field. There are lots of ways to start going about this, e.g. online servers, GAFF, antechamber, etc. -Justin -- == Justin A. Lemkul, Ph.D. Ruth L. Kirschstein NRSA Postdoctoral Fellow Department of Pharmaceutical Sciences School of Pharmacy Health Sciences Facility II, Room 629 University of Maryland, Baltimore 20 Penn St. Baltimore, MD 21201 jalem...@outerbanks.umaryland.edu | (410) 706-7441 http://mackerell.umaryland.edu/~jalemkul == -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
Re: [gmx-users] parameters of GppNHp
I'm using AMBER force field. On 18 September 2016 at 15:37, Dd H wrote: > Hi everyone, > I want to simulate a protein-ligand complex. The ligand is a GppNHp > molecule and an analogue of GTP. I cannot find parameters of GppNHp in > AMBER parameter database (parameters of GTP are supplied there). Can you > tell me how to get the parameters of GppNHp? Thank you in advance! > > Dading Huang > -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.