Redian新闻
>
why size is so big different?
avatar
why size is so big different?# Biology - 生物学
e*e
1
http://changba.com/s/54cb7wBS09AUmi7oCaKZJQ?code=Gt1bjDM0qnFmjm
Beyond:海阔天空
词 曲: 黄家驹
今天我寒夜里看雪飘过
怀著冷却了的心窝飘远方
风雨里追赶
雾里分不清影踪
天空海阔你与我
可会变(谁没在变)
多少次迎著冷眼与嘲笑
从没有放弃过心中的理想
一刹那恍惚
若有所失的感觉
不知不觉已变淡
心里爱(谁明白我)
原谅我这一生不羁放纵爱自由
也会怕有一天会跌倒
被弃了理想谁人都可以
那会怕有一天只你共我
music
仍然自由自我
永远高唱我歌
走遍千里
avatar
r*y
2
【 以下文字转载自 TVChinese 讨论区 】
发信人: tgbyhn (CNN), 信区: TVChinese
标 题: Re: 我给你们亮亮我的学术背景吧
发信站: BBS 未名空间站 (Thu Jul 8 07:28:36 2010, 美东)
我说过小学就通读了论风姐
我第一篇红学论文是
冷月葬诗婚与冷月葬花魂辨
11岁发在新民晚报上
后来兴趣变化了,所以没有继续红楼梦研究
我写的最满意专著是
陀思妥耶夫斯基和复调双声部结构
主要分析不同discourses和权力结构
这种复调传统从
德国霍夫曼ETA小说公猫穆儿生活经历开始
avatar
g*5
3
I am studing a protein Nrf2 now, and predict size should be 68kD, but it is
100-120 kDa on trisglycine gels...
and I know this protein is phosphyralted protein, but different is so big.
and santa cruz antibody give a lot band with western, and even that a lot
ppls use santa cluz antibody do immunofluoresence...
and some labs use their homemade protein purified antibody and go 68kDa band
... and some ppl said Nrf2 at 53kDa on their paper...
confuse me....
avatar
w*u
4
SF
avatar
b*n
5
窥一斑知豹,这个是当今科研混乱的一个缩影。

is
band

【在 g*********5 的大作中提到】
: I am studing a protein Nrf2 now, and predict size should be 68kD, but it is
: 100-120 kDa on trisglycine gels...
: and I know this protein is phosphyralted protein, but different is so big.
: and santa cruz antibody give a lot band with western, and even that a lot
: ppls use santa cluz antibody do immunofluoresence...
: and some labs use their homemade protein purified antibody and go 68kDa band
: ... and some ppl said Nrf2 at 53kDa on their paper...
: confuse me....

avatar
a*x
6
Did you do the control of over-expression and knock-down? If not, you can't
never tell whether the band you saw represents your protein.

is
band

【在 g*********5 的大作中提到】
: I am studing a protein Nrf2 now, and predict size should be 68kD, but it is
: 100-120 kDa on trisglycine gels...
: and I know this protein is phosphyralted protein, but different is so big.
: and santa cruz antibody give a lot band with western, and even that a lot
: ppls use santa cluz antibody do immunofluoresence...
: and some labs use their homemade protein purified antibody and go 68kDa band
: ... and some ppl said Nrf2 at 53kDa on their paper...
: confuse me....

avatar
u*d
7
过表达用标签看看全长蛋白的位置到底在哪里?
也许修饰也许splicing导致条带位置在不同状态下变化。

is
band

【在 g*********5 的大作中提到】
: I am studing a protein Nrf2 now, and predict size should be 68kD, but it is
: 100-120 kDa on trisglycine gels...
: and I know this protein is phosphyralted protein, but different is so big.
: and santa cruz antibody give a lot band with western, and even that a lot
: ppls use santa cluz antibody do immunofluoresence...
: and some labs use their homemade protein purified antibody and go 68kDa band
: ... and some ppl said Nrf2 at 53kDa on their paper...
: confuse me....

avatar
q*8
8
这种事也是常有的,有时候也是解释不清。PHOSPHORYLATION SHIFT有时候也是很明显
的。但也有可能是WESTERN假阳性。你呐,要不割下来去测个序。有时间的话呢,给蛋
白加个TAG,然后用TAG纯化下来再做WESTERN
avatar
q*8
9
不能这么说,不同实验室做出来不同结果是很正常的,也是可以解释的,比如之前某人
做的时候用了一种要抑制剂以为是特定的,后来发现抑制剂有别的功能;有的人药品用
酒精溶,有的人用DMSO溶,有时候会有截然不同的结果。。。这是科研向前走的必由之
路呀~

【在 b*****n 的大作中提到】
: 窥一斑知豹,这个是当今科研混乱的一个缩影。
:
: is
: band

avatar
i*0
10
哥们发贴之前能不能先读一遍,好歹改一下,咱好歹也是学术版啊。不然就发中文吧。
avatar
D*a
11
有时候我也搞不懂,同样一个蛋白,不同公司的抗体说明书里给的size就不一样。

is
band

【在 g*********5 的大作中提到】
: I am studing a protein Nrf2 now, and predict size should be 68kD, but it is
: 100-120 kDa on trisglycine gels...
: and I know this protein is phosphyralted protein, but different is so big.
: and santa cruz antibody give a lot band with western, and even that a lot
: ppls use santa cluz antibody do immunofluoresence...
: and some labs use their homemade protein purified antibody and go 68kDa band
: ... and some ppl said Nrf2 at 53kDa on their paper...
: confuse me....

avatar
f*f
12
这个很正常,最常见的情况是至少有个公司是错的。在极少且特殊的情况,蛋白有不同
的剪切或修饰如sumo化,不同抗体识别不一样结构。

【在 D***a 的大作中提到】
: 有时候我也搞不懂,同样一个蛋白,不同公司的抗体说明书里给的size就不一样。
:
: is
: band

avatar
S*s
13
如果你做一下recombinant protein, 你就知道size了
目前的很多用santa cruz抗体做的IF和WB都是不可信的。
通过overexpression 和siRNA knockdown, 只有两条band是真的。
abcam,santa cruz,cell signaling卖的抗体里能用的似乎只有一个是能用的。

is
band

【在 g*********5 的大作中提到】
: I am studing a protein Nrf2 now, and predict size should be 68kD, but it is
: 100-120 kDa on trisglycine gels...
: and I know this protein is phosphyralted protein, but different is so big.
: and santa cruz antibody give a lot band with western, and even that a lot
: ppls use santa cluz antibody do immunofluoresence...
: and some labs use their homemade protein purified antibody and go 68kDa band
: ... and some ppl said Nrf2 at 53kDa on their paper...
: confuse me....

相关阅读
logo
联系我们隐私协议©2024 redian.news
Redian新闻
Redian.news刊载任何文章,不代表同意其说法或描述,仅为提供更多信息,也不构成任何建议。文章信息的合法性及真实性由其作者负责,与Redian.news及其运营公司无关。欢迎投稿,如发现稿件侵权,或作者不愿在本网发表文章,请版权拥有者通知本网处理。