r**********e 发帖数: 587 | 1 请教有人熟悉Circular dichroism吗?
我打算用Circular dichroism来研究DNA G-quadruplexes
我看paper很多人都是对比如(ATATAT)n 这样的probe进行研究
我现在是想对一段900bp的DNA进行研究,用CD Spectra可行吗?
另外不知道这个CD难不难做?有没有啥公司或者core帮着做?
谢谢 |
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m*t 发帖数: 2464 | 2 从加州理工到高盛银行 by 粟耀莹
Why -- California Institute of Technology to Goldman Sachs
Adventure of Alyce Su 粟耀莹
[1] 前言
[2] 19 岁走出台湾赴美
[3] 进入加州理工
[4] 从物理转生物科技
[5] 得到芯片之父 Carver Mead及诺贝尔奖得主 Rudi Marcus的鼓励
[6] 到生物系找指导教授
[7] 我做出了一个经典生物物理模型
[8] 我用分子生物学的方法从事蛋白质工程研究
[9] 蛋白质工程研究成果得奖
[10] 柏波提示我走从商之路
[11] 用蛋白质工程研究成果换取美国绿卡
[12] 蛋白质工程研究成果申请专利,向创投公司融资,开生物科技公司XENCOR
[13] 创办领导加州理工学院的Case Practice Group进军麦肯锡
[14] 麦肯锡McKinsey & Co。梦碎进军华尔街
[15] 一星期内搞懂”衍生性金融商品的圣经”进入PIMCO
[16] 我在PIMCO受的训练
[17] 赢得「债券王」Bill Gross的心
[18] 我买卖房子... 阅读全帖 |
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d*****r 发帖数: 2583 | 3 大家不要吵了,读读这篇老帖子,娱乐一下。。
我第一次读到是刚来美国不久,今天偶然又翻到,觉得peoplem的这个校友
(Alyce Su)还是很有趣的,虽然里面很多东西跟今天的世界已经差别很大了。
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jsj 贴于2004/07/25 12:12
《从加州理工到高盛银行》 -- 粟耀莹
Why -- California Institute of Technology to Goldman Sachs
Adventure of Alyce Su
CalTech,PIMCO,McKinsey,Goldman Sachs
so that I get to see Larry Ellison !!!!!
[1] 前言
[2] 19 岁走出台湾赴美
[3] 进入加州理工
[4] 从物理转生物科技
[5] 得到芯片之父 Carver Mead及诺贝尔奖得主 Rudi Marcus的鼓励
[6] 到生物系找指导教授
[7] 我做出了一个经典生物物理模型
[8] 我用... 阅读全帖 |
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r*******g 发帖数: 32828 | 4 我的2011年版找工简历
王利民
2014年8月16日
(现注:当时,未列出2010年在Fox Chase Cancer Center的经历;没列出2005年在
Memorial Sloan-Kettering Cancer Center的经历;没列出2006年在陕西师范大学、
2009年在江南大学任教的经历。)
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and home.
Sept. 2003- June 2005: New York State Department of Health
Post-doctorate
Re... 阅读全帖 |
|
b****g 发帖数: 1204 | 5 【 以下文字转载自 WaterWorld 讨论区 】
发信人: buydig (digbuy), 信区: WaterWorld
标 题: 这王利民是混的最惨的高考状元吗?
发信站: BBS 未名空间站 (Tue Aug 19 22:40:39 2014, 美东)
Honor:
Highest score in the 1991' National College Entrance Exam in Hunan
Province, China
2011年版找工简历
王利民
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and ho... 阅读全帖 |
|
c****y 发帖数: 101 | 6 发信人: WangLimin (王利民), 信区: WaterWorld
标 题: 我的2011年版找工简历
发信站: BBS 未名空间站 (Sat Aug 16 09:18:20 2014, 美东)
我的2011年版找工简历
王利民
2014年8月16日
(现注:当时,未列出2010年在Fox Chase Cancer Center的经历;没列出2005年在
Memorial Sloan-Kettering Cancer Center的经历;没列出2006年在陕西师范大学、
2009年在江南大学生物工程学院任教的经历。)
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various ... 阅读全帖 |
|
p*******r 发帖数: 156 | 7 Postdoctoral positions available
A postdoctoral position is available in the Laboratory of Cellular and
Molecular Biology at the National Cancer Institute. A focus of current
studies is understanding the contribution of integrin adhesion complexes,
including focal adhesions and invadopodia, to the control of cancer cell
proliferation and survival. A class of proteins called the Arf GTPase-
activating proteins (Arf GAPs), which regulate the Ras-superfamily proteins
Arfs and integrin adhesions, ... 阅读全帖 |
|
b****g 发帖数: 1204 | 8 【 以下文字转载自 WaterWorld 讨论区 】
发信人: buydig (digbuy), 信区: WaterWorld
标 题: 这王利民是混的最惨的高考状元吗?
发信站: BBS 未名空间站 (Tue Aug 19 22:40:39 2014, 美东)
Honor:
Highest score in the 1991' National College Entrance Exam in Hunan
Province, China
2011年版找工简历
王利民
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and ho... 阅读全帖 |
|
p*******r 发帖数: 156 | 9 Postdoctoral positions available
A postdoctoral position is available in the Laboratory of Cellular and
Molecular Biology at the National Cancer Institute. A focus of current
studies is understanding the contribution of integrin adhesion complexes,
including focal adhesions and invadopodia, to the control of cancer cell
proliferation and survival. A class of proteins called the Arf GTPase-
activating proteins (Arf GAPs), which regulate the Ras-superfamily proteins
Arfs and integrin adhesions, ... 阅读全帖 |
|
m**********t 发帖数: 385 | 10 浙江西湖高等研究院坐落于中国浙江省杭州市西湖区,是一所由国家“千人计划”专家
以及其他顶尖人才领衔创建的新型非营利高端科研机构。研究院目前包括理学、前沿技
术、基础医学和生物学四个研究所,是一所以基础与前沿科学研究为核心,以博士生培
养为起点的高水平科研教学机构。现因发展需要,高研院诚邀海内外优秀科研平台管理
及技术人才加盟。
一、岗位职责及应聘要求:
1. 实验动物中心
1)主治兽医 招聘人数:1名
岗位职责:
a. 负责设施管理,日常运行, 和PI们及实验者沟通,了解需求,做到在满足实验需求
的基础上保障实验动物质量。
应聘要求:
a. 认同西湖大学理念,工作态度端正、吃苦耐劳,具有团队合作精神和服务意识,原
则性和责任心强,有良好的沟通能力;
b. 硕士及以上学历,生物学相关,有小鼠遗传学、兽医学经验者优先;
c. 善于沟通、思路清晰、认真负责、为人踏实、乐于服务;
d. 具有良好的团队合作精神,良好的独立工作及学习能力,积极上进。
2)胚胎操作技术员 招聘人数:1名
岗位职责:小鼠的生物净化、体外受精、精子和胚胎冷冻以及复苏。
应聘要求:
a. 生物学或医学相关专业毕业,硕... 阅读全帖 |
|
p*******r 发帖数: 156 | 11 Postdoctoral positions available
A postdoctoral position is available in the Laboratory of Cellular and
Molecular Biology at the National Cancer Institute. A focus of current
studies is understanding the contribution of integrin adhesion complexes,
including focal adhesions and invadopodia, to the control of cancer cell
proliferation and survival. A class of proteins called the Arf GTPase-
activating proteins (Arf GAPs), which regulate the Ras-superfamily proteins
Arfs and integrin adhesions, ... 阅读全帖 |
|
C********7 发帖数: 1035 | 12 关键词:Gold nanorod, vaccine, respiratory virus, In vitro studies using
ELISA, circular dichroism, epitopes, Human dendritic cells, T cells, immune
responses
Impact factor ~ 4
Send me your name, email, affiliation, list of publications,a couple
sentences describing your expertise. Candidate with matching background(
preference in Nano-Bio area) and earliest correspondence will be recommended
. |
|
W*******n 发帖数: 4140 | 13 我的2011年版找工简历
王利民
2014年8月16日
(现注:当时,未列出2010年在Fox Chase Cancer Center的经历;没列出2005年在
Memorial Sloan-Kettering Cancer Center的经历;没列出2006年在陕西师范大学、
2009年在江南大学任教的经历。)
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and home.
Sept. 2003- June 2005: New York State Department of Health
Post-doctorate
... 阅读全帖 |
|
W*******n 发帖数: 4140 | 14 我的2011年版找工简历
王利民
2014年8月16日
(现注:当时,未列出2010年在Fox Chase Cancer Center的经历;没列出2005年在
Memorial Sloan-Kettering Cancer Center的经历;没列出2006年在陕西师范大学、
2009年在江南大学任教的经历。)
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and home.
Sept. 2003- June 2005: New York State Department of Health
Post-doctorate
... 阅读全帖 |
|
b****g 发帖数: 1204 | 15 Honor:
Highest score in the 1991' National College Entrance Exam in Hunan
Province, China
2011年版找工简历
王利民
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and home.
Sept. 2003- June 2005: New York State Department of Health
Post-doctorate
Research projects: Crystal structure studies on superan... 阅读全帖 |
|
W*******n 发帖数: 4140 | 16 老年痴呆症赞比buydig,你何故不全文转发我的原贴呢?我全文再贴一下:
我的2011年版找工简历
王利民
2014年8月16日
(现注:当时,未列出2010年在Fox Chase Cancer Center的经历;没列出2005年在
Memorial Sloan-Kettering Cancer Center的经历;没列出2006年在陕西师范大学、
2009年在江南大学生物工程学院任教的经历。)
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and home.
Sept. 2003- June 2005: New York... 阅读全帖 |
|
x**i 发帖数: 2627 | 17 刷屏挺好。。。
Honor:
Highest score in the 1991' National College Entrance Exam in Hunan
Province, China
2011年版找工简历
王利民
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and home.
Sept. 2003- June 2005: New York State Department of Health
Post-doctorate
Research projects: Crystal structure studies o... 阅读全帖 |
|
b****g 发帖数: 1204 | 18 【 以下文字转载自 WaterWorld 讨论区 】
发信人: buydig (digbuy), 信区: WaterWorld
标 题: 这王利民是混的最惨的高考状元吗?
发信站: BBS 未名空间站 (Tue Aug 19 22:40:39 2014, 美东)
Honor:
Highest score in the 1991' National College Entrance Exam in Hunan
Province, China
2011年版找工简历
王利民
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and ho... 阅读全帖 |
|
j****i 发帖数: 68152 | 19 【 以下文字转载自 WaterWorld 讨论区 】
发信人: buydig (digbuy), 信区: WaterWorld
标 题: 这王利民是混的最惨的高考状元吗?
发信站: BBS 未名空间站 (Tue Aug 19 22:40:39 2014, 美东)
Honor:
Highest score in the 1991' National College Entrance Exam in Hunan
Province, China
2011年版找工简历
王利民
Career Summary:
PhD degree on Chemistry and post-doctoral research on protein
structure in the USA; Teaching (assistance) experience in the USA and
China; Customer service experience in the USA.
Work/ Research:
Jan 2006 - : various work in the USA, China, and ho... 阅读全帖 |
|
m**z 发帖数: 787 | 20 totally different. CD stands for circular dichroism. It is used to monitor
the secondary structure of a protein. I suggest in your case, try gel
filtration chromatography first. Or native gel. These are probably the
easiest to do. |
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l******n 发帖数: 143 | 21 象前面同学推荐的,光谱类的快速,简单,直接.作为首选很合适.
(1).Fluorescence Emission,最简单的看看tyrosine, tryptophan的化学环境有没有因
为Mg结合而变化,从而对荧光有影响.
(2).同时可以尝试Circular Dichroism,最简单的蛋白二级结构,如果不追究变化的源头
,而只是用变化作为信号去测量金属离子和蛋白作用的,很简单方便.
以上两个方法典型的应用有很多,比如calmodulin和钙离子作用.
注意:因为你需要测的是chemical equilibrium,如果反应很慢的话,需要保证滴定过程
每个滴定点(浓度)都要达到化学反应平衡.
SPR
这个不适合,首先是因为信号来自bulk solution(流动的溶液)中的分子被吸附到固定在
表面的蛋白上形成复合物,本质上因为质量吸附造成sensor surface附近媒介的折射率
改变.所以被吸附的质量大小直接影响了信号强弱.你的实验是Mg在bulk solution,这么
小的离子,几乎不可能产生什么明显的信号.这也是ligand-protein binding里很少用
SPR的... 阅读全帖 |
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e********r 发帖数: 147 | 24 哇,好专业,谢谢!但不知红外旋光法circular dichroism是否能够在整个蛋白构象中
,就只识别这17个aa的构象。另外,这17个aa正好是在膜外面,最靠近胞质的地方,我
想你说的荧光标记法应该可以试试。 |
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b********y 发帖数: 4132 | 26 老板要求做这个试验,sample是种蛋白质。
我想问问样品的浓度大概多少比较合适?
谢谢啦。 |
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j*********5 发帖数: 6221 | 27 查查文献,做溶液CD的文章很多吧,一般正常UV吸收样品浓度就行吧,
呵呵,偶是外行 |
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b******3 发帖数: 377 | 28 我的经验是越低越好,先试比如一微摩尔,不行再diluted。 |
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a****n 发帖数: 3082 | 29 It is related to the path length of cuvette. According to my experience
about 0.1mg/ml for 1mm cuvette will not saturate the detector. |
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s*********i 发帖数: 45 | 30 1) Journal Title: Current Pharmaceutical Analysis (2008, 4(3), 162-175)
Author: Vanyolos, Attila
Article title: New perspectives in the analysis of ecdysteroids: a promising
group of biologically active compounds
2) Journal Title: Chimica e l'Industria (Milan, Italy) (2009, 91(2), 74-77)
Author: Pescitelli, Gennaro
Article title: UV/Vis circular dichroism: determination of the absolute
configuration of organic compounds
3) Journal Title: Journal de la Societe Chimique de Tunisie (2006, 8(1), 33- |
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a****y 发帖数: 1035 | 31 线偏振光可以表示为左右圆偏振光的叠加:
Le^it + Re^(-it) = 2Lcos(t) = 2Rcos(t)
L=R=入射左右圆偏振光的|E|。
通过样品后:
le^i(t-a) + re^(-i(t+a))
= [le^it + re^(-it)]e^(-ia)
= [(l+r)cos(t) + i(l-r)sin(t)]e^(-ia)
因为样品对左右圆偏振光的A(吸收率), n(折射率)不同,使得l!=r, a!=0,
所以这是椭圆偏振光,并且其长轴与入射线偏振光夹角=a.
measure (l-r)/(l+r) vs. lambda (wave length), or (AL-AR) vs. lambda is called
CD(Circular Dichroism, 圆二色性);
a vs. lamba is called ORD(Optical Rotary Dispersion,旋光色散)
把CD谱分解为三种二级结构的特征谱的线性组合,可得出它们在蛋白质中的百分比。
通常使用180-260nm波长,0.5mg/ml, about 50ul sample. 约须1h |
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