g_rms计算的group选择问题
蛋白和小分子配体的复合物跑完MD值之后,我想要分别对蛋白、小分子配体、复合物整体进行MD全过程的RMSD值计算,比较的对象是EM之后的构象。输入:g_rms -s em.tpr -f mdnoPBC.xtc -o rmsd.xvg
弹出需要选择两个group:
Select group for least squares fit
Group 0 ( System) has 95702 elements
Group 1 ( Protein) has3465 elements
Group 2 ( Protein-H) has2706 elements
Group 3 ( C-alpha) has 332 elements
Group 4 ( Backbone) has 996 elements
Group 5 ( MainChain) has1329 elements
Group 6 ( MainChain+Cb) has1645 elements
Group 7 ( MainChain+H) has1645 elements
Group 8 ( SideChain) has1820 elements
Group 9 ( SideChain-H) has1377 elements
Group 10 ( Prot-Masses) has3465 elements
Group 11 ( non-Protein) has 92237 elements
Group 12 ( Other) has 41 elements
Group 13 ( Ligand) has 41 elements
Group 14 ( NA) has 6 elements
Group 15 ( Water) has 92190 elements
Group 16 ( SOL) has 92190 elements
Group 17 ( non-Water) has3512 elements
Group 18 ( Ion) has 6 elements
Group 19 ( UNK) has 41 elements
Group 20 ( NA) has 6 elements
Group 21 ( Water_and_ions) has 92196 elements
Select group for RMSD calculation
Group 0 ( System) has 95702 elements
Group 1 ( Protein) has3465 elements
Group 2 ( Protein-H) has2706 elements
Group 3 ( C-alpha) has 332 elements
Group 4 ( Backbone) has 996 elements
Group 5 ( MainChain) has1329 elements
Group 6 ( MainChain+Cb) has1645 elements
Group 7 ( MainChain+H) has1645 elements
Group 8 ( SideChain) has1820 elements
Group 9 ( SideChain-H) has1377 elements
Group 10 ( Prot-Masses) has3465 elements
Group 11 ( non-Protein) has 92237 elements
Group 12 ( Other) has 41 elements
Group 13 ( Ligand) has 41 elements
Group 14 ( NA) has 6 elements
Group 15 ( Water) has 92190 elements
Group 16 ( SOL) has 92190 elements
Group 17 ( non-Water) has3512 elements
Group 18 ( Ion) has 6 elements
Group 19 ( UNK) has 41 elements
Group 20 ( NA) has 6 elements
Group 21 ( Water_and_ions) has 92196 elements
请问我想要分别对蛋白、小分子配体、复合物整体进行MD全过程的RMSD值计算,应该怎么选择?
在gromacs4.5.4手册第200页里面有backbone的说明,包含N,Cα和C. 直接分别选择蛋白,配体2次即可 一泓山人 发表于 2014-12-18 08:47
直接分别选择蛋白,配体2次即可
谢谢!我想请教下,这个backbone是个什么概念呢,包含什么组成部分? light 发表于 2014-12-18 10:56
谢谢!我想请教下,这个backbone是个什么概念呢,包含什么组成部分?
backbone,蛋白质骨架,我理解就是...把所有氨基酸残基的侧链全去掉,剩下的那部分,由肽键连着α碳原子的,就是backbone。你找个schrodinger或者别的什么软件,载入一个蛋白质,选择只显示backbone的选项,一看,就明白了。
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