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´ËÎÄΪdddc_redsnow·¢±íÓÚbioloverÉϵĹØÓÚ·Ö×Ó¶¯Á¦Ñ§µÄϵÁÐÔ´´ÎÄÕ£¬Ï൱¾µäÓ뾫²Ê£¬Ìش˽«ÏµÁÐÎÄÕÂÕûºÏ£¬Ò»Æð×ªÔØ£¬Íûѧϰ¶¯Á¦Ñ§µÄÐÂÊÖÃǹ²Í¬Ñ§Ï°£¬Ìá¸ß½ø²½£¬ÔÚ´ËÌØÏòdddc_redsnow±¾È˱íʾ¸Ðл¡£ ¶¯Á¦Ñ§ÏµÁÐÖ®Ò»£¨gromacs£¬ÖØ·¢£© ÔÚÀϺεĹÄÀøÏ£¬·¢Ò»ÏÂÎÒµÄgromacsÉÏÊÖÊֲᣨÎÒ´øÈËʱÓõ쬻ù±¾°ëÌì¿ÉÒÔѧ»ágromcas£© ###################################################### # 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 & ÖÁ´Ë£¬È«²¿¸ã¶¨£¬¿ÉÒÔÅÜÁË¡£PJµÄ¶«Î÷·Å³öÀ´Ãô¸Ð£¬Ô´´µÄ½Ìѧ¶«Î÷Ò²¿ÉÒÔÊÕ¾«»ª°É ¶¯Á¦Ñ§ÏµÁÐÖ®¶þ(amber»ù´¡Æª) ÉÏ´ÎдÁËÒ»¸ö£¬½á¹ûÒ»ÏÂÔÚÒòΪ·¢ÌùµÄÔÒò¶ªÁË£¬¼ÓÉÏ×î½üæµÄÒªÃü£¬²»¹ý»¹ÊdzÔÍê·¹¸É»îǰ£¬¾²ÏÂÐÄдһÏÂamber£¬amberÔ¶±ÈgromacsÒª¸´ÔÓ(²»¹ý»¹±È²»ÉÏcharmm£¬¹À¼ÆµÚÒ»´Î¿´charmm½Å±¾µÄÈËÒ»¶¨¾õµÃ×Ô¼ºÑ¡´íÁËÐе±£¬ÀàfortranµÄÓïÑÔ¼ÓÉÏ×Ô´´µÄ¸ñʽ£¬°¦£¬ÓÖÊÇÒ»¶ÎÐÄËáµÄÍùÊÂ...)¡£ÎÒ°Ñamber·Ö³ÉÁ½²¿·Ö½²£¬µÚÒ»²¿·Ö½²»ù´¡£¬µÚ¶þ²¿·Ö½²Ó¦Óá£ÕâÀïÏȽ²µÚÒ»²¿·Ö¡£ 1. ¹ØÓÚÕûÌå¸ÅÀ¨. amberµÄÎļþ¸ñʽÓÐÈýÖÖ×îÎªÖØÒª£ºtop, crd and pdb¡£pdb¿ÉÒÔÉú³Étop and crd, top and crdÒ²¿ÉÒÔת»»³Épdb£¬ÕâЩ¶¼ÊÇasciiÂëÎļþ£¬¿ÉÒÔÊÖ¶¯±à¼(ÕâÒ²ÊÇDNA+ProteinʱºòÓÐʱ²»µÃ²»×÷µÄÊÂÇ飬¾Þ´óµÄ¹¤×÷Á¿)¡£topÎļþÖÐÊÇÍØÆËÎļþ£¬Ï൱ÓÚgromacsµÄtop£¬²»¹ýÖ±½Ó°ÑlibµÄ²ÎÊý¸ã¹ýÀ´£¬²»ÒªÔÙµ÷ÓÃlibÁË¡£crdÎļþÊÇ×ø±êºÍËÙ¶ÈÎļþ£¬ÀàËÆÓÚgroÎļþ£¬pdb²»ÓÃÎÒ˵Á˰ɡ£ 2. amberÖеĸÅÄî: ËùÓеĵ¥Ôª´ÓÔ×Ó£¬Ð¡·Ö×Ó£¬²Ð»ù£¬¼î»ùµÈµÈÒ»Ö±µ½´ó·Ö×Ó¶¼ÊÇunit£¬ÊìϤC++,JAVAµÄÅóÓÑÏëÒ»ÏÂobject¾ÍÀí½âÁË£¬amberµÄxleapµÄ²Ù×÷¾ÍÏñÒ»¸öÍâ°üÌ壬ÀûÓÃobjectµÄ¶ÀÁ¢ÐÔ½øÐйØÁª£¬×éºÏ»òÕß·Ö²ðobject, ʵÏÖ²»Í¬µÄ¹¦ÄÜ£¬Ã¿Ò»¸öunit¶¼ÊǶÀÁ¢µ¥Ôª¡£¶ø±ê×¼µÄ°±»ùËᣬ¼î»ù¾ÍÏñclass£¬Äã×Ô¼ºµÄµ°°×¾ÍÊÇobject¡£Ã¿¸öclass¶ÔÓ¦¶à¸öÓÐ×Ô¼ºÃû×ÖµÄobject¡£ÕâЩ¶¼ÊÇÔÚxleapÖÐʵÏֵģ¬xleap¾ÍÊÇÀûÓÃÕâÖÖ¹ØÏµÀ´µ¼È룬Ð޸ĵ°°×»òÕßDNA/RNA¡£ 3. amber×Ô´øgaffÁ¦³¡£¨±ÈgromacsÄǸöÍøÒ³ËãµÄС·Ö×ÓÕý¹æ¶àÁË£©£¬ÊÊÓÃÓڴ󲿷ÖÓлúС·Ö×Ó£¬µ±È»ÐÞ¸ÄÁ¦³¡Îļþ¿ÉÒÔÈÃÄã»ñµÃ¸ü¶àµÄÖ§³Ö£¬ÓÈÆäÊÇÌØÊâµÄÔ×Ó±ÈÈçËµÂ±ËØ£¬½ðÊôÔ×Ó¡£µçºÉÊDzÉÓõÄrespÄâºÍ£¬¶ø²»ÊÇÔ×ÓµÄpartial charge£¬Õâ¸öµÄÓŵã¼ûJACSµÄÔʼÎÄÏ×£¬²»ÔÙ׸Êö£¬Ö÷ÒªÊÇ¿¼ÂǼ«»¯¡£ 4. ͨ¹ýxleap¸ã¶¨ÁË´ó·Ö×Ó£¬Ð¡·Ö×Ó£¬Ë®£¬ÈܼÁÀë×Ó£¬ÅܵÃʱºò¾ÍÊÇsanderÁË£¬µ±È»8ÒÔºóµÄpmemdÊǸüºÃµÄÑ¡Ôñ£¬²»¹ýÖ»ÄÜÅÜpme·½Ê½µÄ¶¯Á¦Ñ§¡£ 5. ¹ì¼£Îļþamber×öµÄ²»ºÃ£¬Ì«´ó£¬Ã»ÓÐѹËõ¡£¶ÏµãÐøÅÜÒ²²»Èçgromacs£¬°ë¸ö×ø±êµÄÇé¿öʱÓгöÏÖ£¬Ö»¼ûÔ×Ó²æ²æÂúÌì·É°¡£¬ÄǽÐÒ»¸ö׳¹Û¡£·ÖÎö¹¤¾ßÊ×ÍÆptraj£¨²»ÊÇÎÒÍÆµÄ£¬ÊÇËûÃÇ£¬ÎÒ¸öÈËϲ»¶carnal£©£¬¼Ó¸÷ÖÖ¸¨Öú¹¤¾ß¿ÉÒÔʵÏÖgromacsµÄ¸÷ÖÖ¹¦ÄÜ¡£ 6. 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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. 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