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mashulin

铁杆木虫 (正式写手)

[求助] PLAT413_ALERT_2_A Short Inter XH3 .. XHn H18’ .. H19C .. 1.72 Ang.

求助:PLAT413_ALERT_2_A Short Inter XH3 .. XHn H18’ .. H19C .. 1.72 Ang.
如何解决?
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fjytsk

金虫 (小有名气)

【答案】应助回帖

mashulin(金币+4): 2011-04-29 12:53:49
重新加H。实在不行,把无序处理去掉,用simu等指令约束温度因子
2楼2011-04-29 08:55:41
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etongtong

铁杆木虫 (著名写手)

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mashulin(金币+1): 2011-04-29 12:53:57
use bang to solve this error in ins-file.
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3楼2011-04-29 09:08:12
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etongtong

铁杆木虫 (著名写手)

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Sorry,不是bang,而是bump命令。其格式为:
bump 0.02
其作用为:
If two atoms that are not connected according to the connectivity table approach each
other to a distance shorter than the expected shortest non-bonding distance, BUMP
generates a restraint that pushes those atoms apart. Those 'anti-bumping′ restraints are
generated for the element types C, N, O and S and also for hydrogen atoms that are
not bonded to the same atom. This restraint is used almost exclusively for the
refinement of macromolecular structures and can help to avoid energetically
unfavourable side-chain conformations. It also helps to generate a solvent model with
acceptable hydrogen bonding distances that is consistent with the diffraction data.
我记错了,这个命令不常用,许多人不知道。
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4楼2011-04-30 19:23:33
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