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ghcacj(½ð±Ò+1):лл 2010-12-10 10:56:28
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ghcacj(½ð±Ò+1):лл 2010-12-10 10:56:28
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2Â¥2010-12-09 00:21:36
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zh1987hs(½ð±Ò+4):лл 2010-12-09 17:42:12
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zh1987hs(½ð±Ò+4):лл 2010-12-09 17:42:12
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ÔÚVMDÖжÁȡӦ¸ÃÎÊÌâ²»´óµÄ, ÔÚopenµÄʱºò, Ñ¡ÔñÎļþ¸ñʽΪPDB. ÔÚNAMDÖÐʹÓÃ, ÄÇÊÇÐèÒªÐ޸ĵÄ. ×¢ÒâÑо¿Ò»ÏÂNAMDµÄÀý×Ó, ¿´¿´ËüÐèÒªµÄÎļþ, ÊÇÔõÑùµÄ¸ñʽ. ÕâÊÇÎÒÒÔǰµÄÒ»¶Î±Ê¼Ç, Ï£Íû¶ÔÄãÄÜÓÐһЩ°ïÖú. As we know, NAMD needs four files to run the job, namely, (a) a force field in either CHARMM or X_PLOR format; (b) a PSF file in X_PLOR format to describe the molecularstructure; (c) a PDB file to describe the initial coordinates; (d) the configuration file We could easily handle with the force field file and the configuration file, but as far as the PDB and PSF files are concerned, they take me a lot of time. My procedures are as follows: 1. generate the (9,9) CNT by Material Studio, and convert it into pdb file by VEGA ZZ, so I get 99.pdb; 2. generate the water box and conver it into pdb file by VEGA ZZ, so here I have h2o.pdb; 3. write a small fortran code to combine the 99.pdb and h2o.pdb into one pdb file, namely, 9_9_cooh_combined.pdb; 4. convert the final pdb file into psf file by VEGA ZZ, and I have to use Ultraedit to modify the charge values and the atom index, anyhow, we will have 9_9_cooh_combined.psf. As you know, it is really painful and time consuming in the step 3 and 4. |

3Â¥2010-12-09 00:47:48
zhaoyanfei
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zh1987hs(½ð±Ò+1): лл 2011-02-21 22:43:22
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