24小时热门版块排行榜    

查看: 1984  |  回复: 3
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

sunmuer

木虫 (小有名气)

[求助] amber 二硫键问题

我用amber准备蛋白质时 check 说没有二硫键  可是我的pdb 文件是有二硫键的呀

SSBOND   1 CYS A   44    CYS A   51     pdb用记事本打开显示这样就是有二硫键呗  那我接着怎么处理呀
回复此楼

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

出清水而不染
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

lpxmclt

新虫 (小有名气)

pdb4amber -i in.pdb -o out.pdb
能自动添加二硫键(如果初始结构不好不能自动添加,在tleap里面用bond命令手动添加二硫键)
3楼2025-01-09 13:27:47
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 4 个回答

苹果变菠萝

金虫 (小有名气)

【答案】应助回帖

★ ★ ★
感谢参与,应助指数 +1
sunmuer(金币+3): ★★★★★最佳答案, 谢谢,虽然已经解决 2012-03-14 06:51:49
将pdb文件中的CYS变为CYX
2楼2012-03-13 19:54:47
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

lpxmclt

新虫 (小有名气)

In your LEaP input file include:
AddPath SIRAH
source leaprc.sirah
For instance, a typical LEaP file for the protein 1CRN would look like:
✞ ☎
# Load SIRAH force field
addPath ./sirah.amber
source leaprc.sirah
# Load model
protein = loadpdb 1CRN_cg.pdb
# Info on system charge
charge protein
# Set S-S bridges
bond protein.3.BSG protein.40.BSG
bond protein.4.BSG protein.32.BSG
bond protein.16.BSG protein.26.BSG
# Add solvent, counterions and 0.15M NaCl
# Tuned solute-solvent closeness for best hydration
solvateOct protein WT4BOX 20 0.7
addIonsRand protein NaW 22 ClW 22
# Save Parms
saveAmberParmNetcdf protein 1CRN_cg.prmtop 1CRN_cg.ncrst
# EXIT
quit
✝ ✆
Notice that three disulfide bonds are created. For this to work, the Cysteine names in your PDB file must be
edited from their thiol name (see comment on residue naming below).
Thereafter it is just normal Amber stuff!
Step-by-step tutorials on different cases of interest can be found in $AMBERHOME/dat/SIRAH/tutorial/. In
particular, using input files and initialization protocols contained therein is strongly suggested. Note that the version
included in this release corresponds to the version SIRAH 2.1. We recommend users to check and download the
latest updates from www.sirahff.com.
4楼2025-01-09 13:35:30
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[教师之家] 焦虑 +8 水冰月月野兔 2026-03-13 12/600 2026-03-18 15:27 by 咪呜喵呜
[考研] 312求调剂 +8 陌宸希 2026-03-16 9/450 2026-03-18 12:39 by Linda Hu
[考研] 288求调剂,一志愿华南理工大学071005 +4 ioodiiij 2026-03-17 4/200 2026-03-18 12:36 by Linda Hu
[考研] 0703化学求调剂 总分331 +3 ZY-05 2026-03-13 3/150 2026-03-18 10:58 by macy2011
[考研] 301求调剂 +9 yy要上岸呀 2026-03-17 9/450 2026-03-18 08:58 by 无际的草原
[考研] 296求调剂 +5 大口吃饭 身体健 2026-03-13 5/250 2026-03-17 21:05 by 不惑可乐
[硕博家园] 湖北工业大学 生命科学与健康学院-课题组招收2026级食品/生物方向硕士 +3 1喜春8 2026-03-17 5/250 2026-03-17 17:18 by ber川cool子
[考研] 308求调剂 +4 是Lupa啊 2026-03-16 4/200 2026-03-17 17:12 by ruiyingmiao
[考研] 085601求调剂 +4 Du.11 2026-03-16 4/200 2026-03-17 17:08 by ruiyingmiao
[考研] 283求调剂 +3 听风就是雨; 2026-03-16 3/150 2026-03-17 07:41 by 热情沙漠
[考研] 283求调剂 +10 小楼。 2026-03-12 14/700 2026-03-16 16:08 by 13811244083
[考研] 0856求调剂 +3 刘梦微 2026-03-15 3/150 2026-03-16 10:00 by houyaoxu
[考博] 东华理工大学化材专业26届硕士博士申请 +6 zlingli 2026-03-13 6/300 2026-03-15 20:00 by ryzcf
[考研] 080500,材料学硕302分求调剂学校 +4 初识可乐 2026-03-14 5/250 2026-03-14 21:08 by peike
[考研] 材料与化工 323 英一+数二+物化,一志愿:哈工大 本人本科双一流 +4 自由的_飞翔 2026-03-13 5/250 2026-03-14 19:39 by hmn_wj
[考研] 304求调剂 +7 7712b 2026-03-13 7/350 2026-03-13 21:42 by peike
[考研] 考研调剂 +4 芬达46 2026-03-12 4/200 2026-03-13 16:04 by ruiyingmiao
[考研] 308求调剂 +3 是Lupa啊 2026-03-12 3/150 2026-03-13 14:30 by 求调剂zz
[考研] 070303一志愿西北大学学硕310找调剂 +3 d如愿上岸 2026-03-13 3/150 2026-03-13 10:43 by houyaoxu
[考研] 321求调剂(食品/专硕) +3 xc321 2026-03-12 6/300 2026-03-13 08:45 by xc321
信息提示
请填处理意见