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######################################################
# Process protein files step by step #
######################################################
pdb2gmx -f 2th_cap.pdb -o 2th_cap.gro -p 2th_cap.top -ignh -ter
nedit 2th_cap.top
editconf -f 2th_cap.gro -o 2th_cap_box.gro -d 1.5
genbox -cp 2th_cap_box.gro -cs -p 2th_cap.top -o 2th_cap_water.gro
make_ndx -f 2th_cap_water.gro -o 2th_cap.ndx
genpr -f 2th_cap_water.gro -n 2th_cap.ndx -o 2th_cap_All.itp
genpr -f 2th_cap_water.gro -n 2th_cap.ndx -o 2th_cap_M.itp
genpr -f 2th_cap_water.gro -n 2th_cap.ndx -o 2th_cap_C.itp
nedit Flavo.itp
grompp -f em.mdp -c 2th_cap_water.gro -p 2th_cap.top -o prepare.tpr
genion -s prepare.tpr -o 2th_cap_water_ion.gro -np 1 -pq 1
#####################################################
# Minimize step by step #
# 1. minimization fixing whole protein #
# 2. minimization fixing maincharin of protein #
# 3. minimization fixing Ca of protein #
# 4. minimization without fix #
#####################################################
grompp -np 4 -f em.mdp -c 2th_cap_water_ion.gro -p 2th_cap.top -o minimize_water.tpr
mpirun -np 4 mdrun -nice 0 -s minimize_water.tpr -o minimize_water.trr -c minimize_water.gro -e minimize_water.edr -g minimize_water.log &
grompp -np 4 -f em.mdp -c minimize_water.gro -p 2th_cap.top -o minimize_sidechain.tpr
mpirun -np 4 mdrun -nice 0 -s minimize_sidechain.tpr -o minimize_sidechain.trr -c minimize_sidechain.gro -e minimize_sidechain.edr -g minimize_sidechain.log &
grompp -np 4 -f em.mdp -c minimize_sidechain.gro -p 2th_cap.top -o minimize_sidechain_ex.tpr
mpirun -np 4 mdrun -nice 0 -s minimize_sidechain_ex.tpr -o minimize_sidechain_ex.trr -c minimize_sidechain_ex.gro -e minimize_sidechain_ex.edr minimize_sidechain_ex.log &
grompp -np 4 -f em.mdp -c minimize_sidechain_ex.gro -p 2th_cap.top -o minimize_all.tpr
mpirun -np 4 mdrun -nice 0 -s minimize_all.tpr -o minimize_all.trr -c minimize_all.gro -e minimize_allx.edr -g minimize_all.log&
editconf -f minimize_all.gro -o minimize_all.pdb
#####################################################
# Raise temperature step by step #
# 1. raise from 0K to 100K fixing whole protein #
# 2. raise from 100K to 200K fixing whole protein #
# 3. raise from 200K to 300K fixing whole protein #
# 4. balance fixing maincharin of protein #
# 5. balance fixing Ca of protein #
#####################################################
grompp -np 4 -f heat.mdp -c minimize_all.gro -p 2th_cap.top -o temperature100K.tpr
mpirun -np 4 mdrun -nice 0 -s temperature100K.tpr -o temperature100K.trr -c temperature100K.gro -e temperature100K.edr -g temperature100K.log &
grompp -np 4 -f heat.mdp -c temperature100K.gro -p 2th_cap.top -o temperature200K.tpr
mpirun -np 4 mdrun -nice 0 -s temperature200K.tpr -o temperature200K.trr -c temperature200K.gro -e temperature200K.edr -g temperature200K.log &
grompp -np 4 -f heat.mdp -c temperature200K.gro -p 2th_cap.top -o temperature300K.tpr
mpirun -np 4 mdrun -nice 0 -s temperature300K.tpr -o temperature300K.trr -c temperature300K.gro -e temperature300K.edr -g temperature300K.log &
g_energy -f temperature300K.edr -s temperature300K.tpr -o temperature300K.xvg
grompp -np 4 -f heat.mdp -c temperature300K.gro -p 2th_cap.top -o T300K_M.tpr
mpirun -np 4 mdrun -nice 0 -s T300K_M.tpr -o T300K_M.trr -c T300K_M.gro -e T300K_M.edr -g T300K_M.log &
grompp -np 4 -f heat.mdp -c T300K_M.gro -p 2th_cap.top -o T300K_Ca.tpr
mpirun -np 4 mdrun -nice 0 -s T300K_Ca.tpr -o T300K_Ca.trr -c T300K_Ca.gro -e T300K_Ca.edr -g T300K_Ca.log &
grompp -np 4 -f heat.mdp -c T300K_Ca.gro -p 2th_cap.top -o T300K_MD.tpr
mpirun -np 4 mdrun -nice 0 -s T300K_MD.tpr -o T300K_MD.trr -c T300K_MD.gro -e T300K_MD.edr -g T300K_MD.log &
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a. input sequence£¬alignment£¨pariwise and multi alignment£¬Ö÷ÒªÊǶÔÀàËÆ½á¹¹ÒªºÜºÃÁ˽⣬manualµÄÅÅÁÐÔ­ÔòдµÄ·Ç³£ºÃ£¬½¨Òé´ó¼Ò×Ðϸ¿´£©

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1.       Check and correct potentials, partial charges, and hydrogens before submitting a Discover/CHARMm job.

       ¢Ù Builder from the Module pulldown

       ¢Ú For hydrogens, use the Hydrogen command in the Modify pulldown

       ¢Û Potential atom types and partial charges, use the commands in the Forcefield pulldown.

2.  Check and correct steric overlaps

       ¢Ù Bump command from the Measure pulldown

       ¢Ú Relieve them by moving atoms with the Torsion command in the Transform pulldown.

3.  Find unacceptable steric overlaps caused by one to three interactions or short bond lengths.

       ¢Ù Using the Geometry command in the Modify pulldown in the Builder module.

4.  End Repair

5.  Splice Repair

6.  Energy Minimization

       ¢Ù Relax command provides for the selective minimization of sections of the model protein.

7.  Molecular Dynamics

       ¢Ù Explore command in the Refine pulldown can accomplish this task.

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²ÉÓ÷½·¨£ºGMD (gromacs), PCA, QM, Homology, Protein-Protein docking
1. Ê×ÏÈͨ¹ýGMD½âÎöÁ½¸öС·Ö×Ó¹¹Ïó±ä»¯

2. ´Ó½á¹¹ÈëÊÖ·ÖÎö²úÉú±ä»¯µÄÔ­Òò

3. Éè¼ÆQMÀ´ÑéÖ¤ATP±ä»¯µÄ¼Ù˵

4. Éè¼ÆPCAÀ´·ÖÎöµ°°×µÄ±ä»¯£¬²¢Í¨¹ýPCA½«Ð¡·Ö×ӱ仯Óëµ°°×±ä»¯¹ØÁªÆðÀ´

5. ·ÖÎöµÃ³ö´ó·Ö×Ó´ò¿ªµÄ¸ù±¾Ô­ÒòÀ´×ÔÓÚС·Ö×ӵĹ¹ÏëÖÜÆÚÐԱ仯

6. ÀûÓÃProtein-Protein docking½øÐз´Ó¦³õʼ»·¾³µÄ¹¹½¨£¬²¢ÓÃGMDÀ´¿¼Ö¤½á¹¹µÄÕýÈ·ÐÔ

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