24小时热门版块排行榜    

Znn3bq.jpeg
查看: 3975  |  回复: 11
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

丫头7976

铜虫 (正式写手)

[求助] 关于在表达蛋白和GFP蛋白之间的linker

各位好,我最近在做膜蛋白的表达,在构建载体的时候我在膜蛋白的C端还加了GFP指示蛋白,但是在诱导表达后,根本看不到菌发出绿色荧光,而我只表达GFP时却能看到菌是绿色的,我在构建载体的时把膜蛋白和GFP直接连在一起了,中间没有加linker regions,我想问一下各位,我的菌株看不出绿色的原因是不是我没有加一个linker的原因呢,如果有做过这方面的大侠是不是可以知道一下我呢,多谢各位!
回复此楼

» 收录本帖的淘帖专辑推荐

博士学习

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

roomofxw

木虫 (正式写手)

我随便敲敲键盘的啊
SDS-PAGE确定GFP是否表达了,或者融合蛋白表达量很低
膜蛋白具有疏水区域,倾向于形成聚集体,聚集有可能造成GFP功能丧失,甚至性成包涵体。
双阅读框共表达目的蛋白和GFP,确认目的蛋白特性是否对GFP有影响。
另外我做过大肠和酵母表达GFP,肉眼是可以观察到绿色菌体
但是如果表达量比较低的情况下,我认为还是需要荧光显微镜的
10楼2011-11-30 11:47:31
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 12 个回答

bio-research

金虫 (职业作家)

【答案】应助回帖

★ ★ ★ ★ ★
丫头7976(金币+3): Thank you for your advices,but 2011-06-06 17:42:47
dhd997(金币+5): good 2011-06-06 21:28:13
protein of interest surely weakens fluorescence of GFP with linker or without linker.
i have ever made experiment about expression of fusion protein including GFP,
the fusion protein including GFP can emit green fluorescence although its green fluorescence is weaker than that of control.
but the fusion protein in my experiment is located at the cytoplasm, and your protein occured in the membrane, I don`t know whether location of protein including GFP effects fluorescence emission or not.
家有小子初长成!(Nothing is impossible to a willing heart!)
2楼2011-06-06 11:13:02
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

丫头7976

铜虫 (正式写手)

引用回帖:
Originally posted by bio-research at 2011-06-06 11:13:02:
protein of interest surely weakens fluorescence of GFP with linker or without linker.
i have ever made experiment about expression of fusion protein including GFP,
the fusion protein including GF ...

Thank you very much for your advice, but there is a question, when you express fusion protein including GFP,  can you watch the green fluorescence with the naked eye ?
3楼2011-06-06 17:47:22
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

bio-research

金虫 (职业作家)

【答案】应助回帖

丫头7976(金币+1): thanks 2011-06-07 16:11:20
引用回帖:
Originally posted by 丫头7976 at 2011-06-06 17:47:22:
Thank you very much for your advice, but there is a question, when you express fusion protein including GFP,  can you watch the green fluorescence with the naked eye ?

no,I can`t.
even green fluorescence wasn`t seen in the control group(only GFP) by naked eyes.
家有小子初长成!(Nothing is impossible to a willing heart!)
4楼2011-06-06 17:59:40
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
[考研] 0854求调剂 +12 门路摸摸 2026-04-15 13/650 2026-04-16 00:14 by Art1977
[考研] 药学求调剂 +12 喽哈加油 2026-04-14 14/700 2026-04-15 23:49 by 陈皮皮
[考研] 求调剂 +11 小聂爱学习 2026-04-11 15/750 2026-04-15 21:57 by noqvsozv
[考研] 恳请有学校收留 +5 柯淮然 2026-04-12 5/250 2026-04-15 21:49 by noqvsozv
[考研] 22专硕求调剂 +9 haoyun上岸 2026-04-11 11/550 2026-04-15 14:47 by elainzaizai
[考研] 求调剂,985材料与化工348分 +9 涵竹刘 2026-04-11 14/700 2026-04-13 22:26 by 涵竹刘
[考研] B区0809 ,数一英一,290 求调剂 +3 泠潍1111 2026-04-12 4/200 2026-04-13 20:35 by 学员JpLReM
[考研] 材料复试求调剂 +24 xhhdjdjsjks 2026-04-09 24/1200 2026-04-13 15:49 by 幸免 ..
[考研] 一志愿双非085400电子信息344 求调剂,对材料和化学方向也感兴趣 +12 无情的小羊 2026-04-09 13/650 2026-04-13 14:17 by 张zhihao
[考研] 296求调剂 +14 汪!?! 2026-04-10 16/800 2026-04-12 10:48 by zhouyuwinner
[考研] 0854调剂 +12 长弓傲 2026-04-09 13/650 2026-04-12 09:56 by 逆水乘风
[考研] 270求调剂 +14 杨乐369 2026-04-11 14/700 2026-04-11 20:16 by 蓝云思雨
[考研] 求调剂 +11 翩翩一书生 2026-04-09 11/550 2026-04-11 19:57 by 逆水乘风
[考研] 0859,337求调剂 +4 研s. 2026-04-10 4/200 2026-04-11 11:34 by caotw2020
[考研] 工科273调剂 +6 X1999 2026-04-09 7/350 2026-04-11 10:23 by zhq0425
[考研] 281求调剂 +11 觉得好的吧 2026-04-10 11/550 2026-04-11 09:35 by 逆水乘风
[考研] 调剂 +19 小张ZA 2026-04-10 20/1000 2026-04-10 22:08 by 猪会飞
[考研] 265求调剂 +12 风说她早忘了 2026-04-10 13/650 2026-04-10 18:56 by chemisry
[考研] 085601初试330分找调剂 +10 流心奶黄包l 2026-04-09 10/500 2026-04-10 08:14 by Sammy2
[考研] 0860004 求调剂 309分 +6 Yin DY 2026-04-09 6/300 2026-04-09 10:19 by 啊李999
信息提示
请填处理意见