小辈按照Amber官网上面的教程学习MM-PBSA,但是一开始我就进行不下去啦!我用命令:
tleap -f oldff/leaprc.ff99SB
> source leaprc.gaff
> com = loadpdb ras-raf.pdb
> ras = loadpdb ras.pdb
> raf = loadpdb raf.pdb 打开三个pdb文件,可是总显示:
Created a new atom named: HD22 within residue: .R<LEU 242>
Created a new atom named: HD23 within residue: .R<LEU 242>
Created a new atom named: C within residue: .R<LEU 242>
Created a new atom named: O within residue: .R<LEU 242>
Created a new atom named: OXT within residue: .R<LEU 242>
total atoms in file: 3862
The file contained 3862 atoms not in residue templates
然后我继续运行下列命令:
set default PBRadii mbondi2
saveamberparm com ras-raf.prmtop ras-raf.inpcrd
saveamberparm ras ras.prmtop ras.inpcrd
saveamberparm raf raf.prmtop raf.inpcrd
就出现以下情况:
FATAL: Atom .R<LEU 242>.A<HD23 17> does not have a type.
FATAL: Atom .R<LEU 242>.A<C 18> does not have a type.
FATAL: Atom .R<LEU 242>.A<O 19> does not have a type.
FATAL: Atom .R<LEU 242>.A<OXT 20> does not have a type.
Failed to generate parameters
Parameter file was not saved.