|
马上注册,结交更多好友,下载更多分子模拟资源。
您需要 登录 才可以下载或查看,没有帐号?我想注册
x
本帖最后由 墨竹晓风 于 2013-1-9 10:05 编辑
- AMBER官网分析H键教程+一些说明
- 1.先将mdcrd的轨迹文件格式转为binpos格式,这样计算会快一些,而且可以将多个mdcrd合并为一个binpos文件。in文件:
- -----------------------------------------
- mdcrd_to_binpos.ptraj
- trajin equil1.mdcrd
- trajin equil2.mdcrd
- trajin equil3.mdcrd
- trajin equil4.mdcrd
- trajin equil5.mdcrd
- trajin equil6.mdcrd
- trajin equil7.mdcrd
- trajin equil8.mdcrd
- trajin equil9.mdcrd
- trajin equil10.mdcrd
- trajout equil_1-10.binpos binpos
- --------------------------------------------------------------------
- 终端:
-
- >$AMBERHOME/bin/ptraj com_wat.prmtop <mdcrd_to_binpos.ptraj >mdcrd_to_binpos.out
- 2.分析H键,输入文件analyse_hbond.ptraj如下:
- ------------------------------------------------------------------
- trajin equil_1-10.binpos
- #-- Donors from standard amino acids(标准残基中H的给体)
- donor mask :GLN@OE1
- donor mask :GLN@NE2
- donor mask :ASN@OD1
- donor mask :ASN@ND2
- donor mask :TYR@OH
- donor mask :ASP@OD1
- donor mask :ASP@OD2
- donor mask :GLU@OE1
- donor mask :GLU@OE2
- donor mask :SER@OG
- donor mask :THR@OG1
- donor mask :HIS@ND1
- donor mask :HIE@ND1
- donor mask :HID@NE2
- #-- Acceptors from standard amino acids (标准残基中H的受体)
- acceptor mask :ASN@ND2 :ASN@HD21
- acceptor mask :ASN@ND2 :ASN@HD22
- acceptor mask :TYR@OH :TYR@HH
- acceptor mask :GLN@NE2 :GLN@HE21
- acceptor mask :GLN@NE2 :GLN@HE22
- acceptor mask :TRP@NE1 :TRP@HE1
- acceptor mask :LYS@NZ :LYS@HZ1
- acceptor mask :LYS@NZ :LYS@HZ2
- acceptor mask :LYS@NZ :LYS@HZ3
- acceptor mask :SER@OG :SER@HG
- acceptor mask :THR@OG1 :THR@HG1
- acceptor mask :ARG@NH2 :ARG@HH21
- acceptor mask :ARG@NH2 :ARG@HH22
- acceptor mask :ARG@NH1 :ARG@HH11
- acceptor mask :ARG@NH1 :ARG@HH12
- acceptor mask :ARG@NE :ARG@HE
- acceptor mask :HIS@NE2 :HIS@HE2
- acceptor mask :HIE@NE2 :HIE@HE2
- acceptor mask :HID@ND1 :HID@HD1
- acceptor mask :HIP@ND1,NE2 :HIP@HE2,HD1
- #-- Backbone donors and acceptors for this particular molecule
- # N-H for prolines do not exist so are not in the mask(脯胺酸 Proline 需要排除,下面红字的地方就是需要修改PRO之后的残基)
- #
- donor mask @O
- acceptor mask :2-11,13-16,20@N :2-20@H
- #Terminal residues have different atom names (N端和C端的残基会改变名字,因此需要指定为OXT)
- donor mask @OXT
- acceptor mask :1@N :1@H1
- acceptor mask :1@N :1@H2
- acceptor mask :1@N :1@H3
- #-- series hbt is just a placeholder to ensure we get the full analysis. If you don't
- #have the word series you don't get a full analysis. (计算出现5%以上的H键)
- hbond print .05 series hbt
- ----------------------------------------------------------------------------
- 终端:
-
- >$AMBERHOME/bin/ptraj com_wat.prmtop <analyse_hbond.ptraj >analyse_hbond.out
- 3.结果分析
- 出来的结果是这样的
- DONOR ACCEPTORH ACCEPTOR atom# :res@atom atom# :res@atom atom# :res@atom %occupied distance angle lifetime maxocc| 197 :12@O | 228 :16@H 227 :16@N | 25.83 2.871 ( 0.08) 22.38 (12.37) 2.2 ( 1.9) 30 | oooo-..|
- 给体-H-受体, 原子号-残基号-原子。 oooo-x分别表示
- Dumping schematic of time series after each h-bond, key follows: | . - o x * @ | 0-5% 5-20% 20-40% 40-60% 60-80% 80-95% 95-100% occupancy
复制代码 |
|