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502090386

木虫 (正式写手)

[交流] 【求助/交流】biotin标记蛋白的条件 已有4人参与

用biotin 标记蛋白有什么标准的方法没有呢?
我用的方法是将biotin和EDC配成母液,加蛋白之后室温孵育三小时就完了,结果好像不好……
还请大家指教,不胜感激!
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lynni

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小木虫(金币+0.5):给个红包,谢谢回帖
我做的biotin标记是在4°C
淘喜欢的一切
5楼2011-12-26 22:35:01
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zhwenxing

木虫 (著名写手)

尛森蟲

★ ★ ★
小木虫(金币+0.5):给个红包,谢谢回帖交流
amisking(金币+2):欢迎交流! 2010-05-11 11:43:21
1、考虑biotin,类似“效价”,纯度,标 的能力。
2、蛋白用量。
3、根据说明书吧,不同公司的不一样。
2楼2010-05-11 09:16:04
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502090386

木虫 (正式写手)

时间长短呢?还有反应温度等等等……
3楼2010-05-11 23:18:25
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xhjggl

木虫 (正式写手)

上海生工有生物素标记试剂卖

Biotin BMCC           
Description:
((1-Biotinamido)-4-[4'-(maleimidomethyl)cyclohexanecarboxamido]hexane) MW 533.7 Purity > 95% on TCL Spacer arm 32.6 angstroms. Maleimide reacts with thiol groups to form a thioether link Reaction pH: acidic or neutral pH Dissolve in DMF and DMSO.
Note: The reaction avoids potential modification of tyrosine groups that can inactivate biological activity Store: -15~-20℃
编号        包装        价格        产地
BSB222        50mg        1,855        进口分装
Biotin LC-Hydrazide         
Description:
MW 371.5 Purity > 95% on TLC Spacer arm 24.7 angstroms. Dissolve in DMSO before adding to aqueous buffer Reaction pH: 4-6 Longer spacer arm than biotin hydrazide helps prevent steric hindrances Requires the use of sodium periodate to generate carbonyl groups,Store: -15~-20℃
编号        包装        价格        产地
BSB220        50mg        1,098        进口分装
Iodoacetyl LC Biotin         
Description:
(N-Iodoacetyl-N-biotinylhexylenediamine) Forms a hydrazone bond. MW 510.4 Purity > 95% on TLC Spacer arm  27.1 angstroms. Reaction pH: 7.8-8.5 4-6  Membrane Permeable Dissolve in DMSO before adding to aqueous buffer. Reacts specifically with thiol groups to form a stable thiol-ether bond,Store: -15~-20℃
编号        包装        价格        产地
ISB218        50mg        1,325        进口分装
NHS Biotin          
Description:
(N-Hydroxysuccinimidobiotin ester)C14H19N3O5S MW 341.4 Purity > 95% on TLC Spacer arm 13.5 angstroms. Reaction pH: 7-9 Membrane Permeable Soluble in DMF DMSO, not in water. CAS# 35013-72-0,Store: -15~-20℃
编号        包装        价格        产地
HSB212        50mg
250mg        258
1,072        进口
分装
NHS LC Biotin          
Description:
(Succinimidyl-6-(biotinamido)hexanoate)MW 455.5 Purity > 95% on TLC Spacer arm 22.4 angstroms. NHS LC Biotin has an extended spacer arm and reduces steric hindrance when binding several biotinylated molecules to one avidin complex. Reaction pH: 7-9 Membrane Permeable. Soluble in DMF DMSO before use.  CAS# 72040-63-2   Store: -15~-20℃
编号        包装        价格        产地
SSB215   [72040-63-2]        50mg        1,120        进口分装
Sulfo-NHS-Biotin          
Description:
(Sulfosuccinimidobiotin)MW 443.4 Purity > 95% on TLC Spacer arm 13.5 angstroms. Reaction pH: 7-9 Membrane Permeable Soluble in water. Store: -15~-20℃
编号        包装        价格        产地
SSB213   [119616-38-5]        50mg        1,260        进口分装
Sulfo NHS LC Biotin         
Description:
(Sulfosuccinimidyl-6-(biotinamido)hexanoate) MW 556.6 Purity > 94% on TCL Spacer arm  22.4 angstroms. Reaction pH: 7-9 Membrane Permeable Soluble in water. Store: -15~-20℃
编号        包装        价格        产地
SSB214          100mg        1,900        进口分装
Sulfo NHS SS Biotin          
Description:
(Sulfosuccinimidyl-2-(biotinamido)ethyl-1,3-dithiopropionate) MW 606.7 Purity > 95% on TLC Spacer arm  24.3 angstroms. Disulfide bond in the spacer arm is cleavable using reducing agents such as TCEP and DTT Cleavable water soluble analog to NHC LC Biotin Water-soluble. Store: -15~-20℃

编号        包装        价格        产地
BSB216          50mg        1,197        进口分装
4楼2010-12-06 17:50:43
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