24小时热门版块排行榜    

Znn3bq.jpeg
查看: 585  |  回复: 5
当前主题已经存档。
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

edwardwtfl

木虫 (正式写手)

[交流] 蛋白A是指什么啊?

偶是个做生物的菜鸟,最近看的几篇文章上面都有“protein A”,在谷歌上也没有搜到,到底是一种特殊的表达方式,还是说仅仅是后者?谢谢!

[ Last edited by amisking on 2009-11-9 at 17:57 ]
回复此楼

» 猜你喜欢

[img]http://www.discuz.net/images/logo.gif[/img]
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

edwardwtfl

木虫 (正式写手)

引用回帖:
Originally posted by nicknelson at 2009-11-9 09:07:
Protein A is a 40-60 kDa MSCRAMM surface protein originally found in the cell wall of the bacteria Staphylococcus aureus. It is encoded by the spa gene and its regulation is controlled by DNA topol ...

多谢了,很详细,祝你天天快乐!
[img]http://www.discuz.net/images/logo.gif[/img]
4楼2009-11-09 17:56:28
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 6 个回答

nicknelson

至尊木虫 (职业作家)

★ ★ ★
小木虫(金币+0.5):给个红包,谢谢回帖交流
1949stone(金币+2,VIP+0):很细致 谢谢 11-9 09:51
Protein A is a 40-60 kDa MSCRAMM surface protein originally found in the cell wall of the bacteria Staphylococcus aureus. It is encoded by the spa gene and its regulation is controlled by DNA topology, cellular osmolarity, and a two-component system called ArlS-ArlR. It has found use in biochemical research because of its ability to bind immunoglobulins. It binds proteins from many of mammalian species, most notably IgG’s. It binds with the Fc region of immunoglobulins through interaction with the heavy chain. The result of this type of interaction is that, in serum, the bacteria will bind IgG molecules in the wrong orientation (in relation to normal antibody function) on their surface which disrupts opsonization and phagocytosis.

http://en.wikipedia.org/wiki/Protein_A
2楼2009-11-09 09:07:49
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

十比

木虫 (著名写手)

★ ★
小木虫(金币+0.5):给个红包,谢谢回帖交流
1949stone(金币+1,VIP+0):谢谢交流 11-9 18:38
这个经常用来纯化抗体, 他可以特异结合血清中的IgG.
3楼2009-11-09 10:35:12
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

edwardwtfl

木虫 (正式写手)

引用回帖:
Originally posted by 十比 at 2009-11-9 10:35:
这个经常用来纯化抗体, 他可以特异结合血清中的IgG.

简洁明了,非常感谢,祝天天快乐!
[img]http://www.discuz.net/images/logo.gif[/img]
5楼2009-11-09 17:57:01
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 366求调剂 +9 不知名的小卅 2026-04-11 9/450 2026-04-13 01:19 by 幸免 ..
[考研] 339求调剂 +3 hanwudada 2026-04-12 3/150 2026-04-12 21:43 by lbsjt
[教师之家] 山东双非院校考核超级无底线,领导幸灾乐祸,教师遭殃恐 +3 qut2026 2026-04-11 7/350 2026-04-12 20:24 by qut2026
[考研] 277 数一104,学硕,求调剂 +21 瓶子PZ 2026-04-09 23/1150 2026-04-11 23:12 by labixiaoqiao
[考研] 296求调剂 +8 汪!?! 2026-04-09 8/400 2026-04-11 21:02 by 逆水乘风
[考研] 086003调剂求助 +21 苏弋万 2026-04-09 22/1100 2026-04-11 20:25 by dongdian1
[考研] 本人女孩 +7 吼吼, 2026-04-10 9/450 2026-04-11 14:45 by ACS Nano——
[考研] 求调剂 +10 璃茉一定上岸 2026-04-10 10/500 2026-04-11 13:31 by 1005715100
[材料工程] 材料调剂推荐 +8 蛋糕x2 2026-04-07 8/400 2026-04-10 23:13 by Ftglcn90
[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] 本9 一志愿西工大085601 324求调剂 +5 wysyjs25 2026-04-10 5/250 2026-04-10 16:57 by luoyongfeng
[考研] 一志愿京区985,085401电子信息,本科电子信息 +3 阳光开朗的男孩 2026-04-10 3/150 2026-04-10 16:29 by sophia_93
[考研] 085800 能源动力求调剂 +6 阿biu啊啊啊啊啊 2026-04-10 6/300 2026-04-10 15:03 by hemengdong
[考研] 083200 初试305分 求调剂 暂不考虑跨专业 +15 Claireyyyy 2026-04-09 15/750 2026-04-09 16:11 by zhuimr
[考研] 349学科化学045106求调剂,化学类都可以 +8 保好懂懂 2026-04-08 8/400 2026-04-09 14:03 by xulei3024
[考研] 机械工程313分找工科调剂 +3 双一流本科机械 2026-04-08 3/150 2026-04-08 20:41 by 土木硕士招生
[考研] 266调剂 +8 daya sun 2026-04-07 9/450 2026-04-08 20:27 by yutian743
[考研] 265求调剂 +19 小木虫085600 2026-04-06 21/1050 2026-04-08 10:38 by 逆水乘风
[考研] 323求调剂 +3 林zlu 2026-04-07 4/200 2026-04-07 23:21 by lbsjt
[考研] 259求调剂 +5 就爱吃土豆呀呀 2026-04-07 5/250 2026-04-07 22:40 by JourneyLucky
信息提示
请填处理意见