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NHS-SS-Biotin
本产品不向个人销售,仅用作科学研究,不用于任何人体实验及非科研性质的动物实验。
NHS-SS-Biotin图片
CAS NO:122266-55-1
包装与价格:
包装价格(元)
100mg电议
1g电议

产品介绍

化学性质

StorageStore at -20°C
该产品在溶液中不稳定,建议现配现用
M.Wt504.64
Cas No.122266-55-1
FormulaC19H28N4O6S3
SynonymsNHS-SS-Biotin,Biotin disulfide N-hydroxysuccinimide ester
Solubility≥28.79 mg/mL in DMSO; insoluble in H2O; insoluble in EtOH
Chemical Name2,5-dioxopyrrolidin-1-yl 3-((2-(5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)ethyl)disulfanyl)propanoate
Canonical SMILESO=C1CCC(N1OC(CCSSCCNC(CCCC[C@@H]2SC[C@@](N3)([H])[C@]2([H])NC3=O)=O)=O)=O
运输条件蓝冰运输或根据您的需求运输。
一般建议为了使其更好的溶解,请用37℃加热试管并在超声波水浴中震动片刻。不同厂家不同批次产品溶解度各有差异,仅做参考。若实验所需浓度过大至产品溶解极限,请添加助溶剂助溶或自行调整浓度。溶液形式一般不宜长期储存,请尽快用完。

资料参考

NHS-SS-biotin [Succinimidyl-2-(biotinamido)-ethyl-1,3-dithiopropionate]是一个长链裂解的胺反应性生物素化试剂,由于结构中横桥的存在,它具有24.3 A长度的间隔臂。长间隔臂增加了共价修饰分子与双环生物素环之间的长度,从而增强分子与亲和素或链亲和素探针的结合能力。NHS-SS-biotin的NHS酯基与蛋白和其它分子的胺基反应形成酰胺键,并释放sulfo-NHS。NHS-SS-Biotin是水不溶性的分子,在加入反应性水溶液之前需要先溶于有机溶剂中。

参考文献:
Bioconjugate Techniques , 2nd ed.  By Greg T.Hermanson  (Pierce Biotechnology, Thermo Fisher Scientific, Rockford, IL).  Academic Press  (an imprint of Elsevier):  London, Amsterdam, Burlington, San Diego . 2008. ISBN 978-0-12-370501-3.

特性

o Protein labeling—biotinylate antibodies or other proteins for detection or purification using streptavidin probes or resins
o Intracellular labeling—membrane-permeable, can be used to label inside cells
o Amine-reactive—reacts with primary amines (-NH2), such as the side-chain of lysines (K) or the N-terminal-amine
o Cleavable—disulfide bond in spacer arm allows the biotin label to be removed using reducing agents such as DTT
o Solubility—water insoluble, must be dissolved in DMSO or DMF before further dilution in aqueous buffers
o Medium length—spacer arm is 24.3 angstroms; it consists of the native biotin valeric acid group extended by a 7-atom chain

试验操作

Biotinylation method [1]:

Sample

hippocampal neurons

Preparation method

Soluble in DMSO or DMF.

Reaction Conditions

1.5 mg/ml, 4 ℃ for 1 h

Applications

Neurons were washed with the artificial cerebrospinal fluid(ACSF) at 37 ℃, and incubated with 1.5 ml of 1.5 mg/ml NHS-SS-biotin with gentle shaking at 4 ℃ for 1 h. After washing, neurons were switched to the neuronal culture medium and incubated at 37 ℃. At indicated times of incubation, neurons were cooled to 4 ℃ and un-endocytosed surface biotin was cleaved by incubating in the glutathione cleavage buffer (50 mM glutathione, 75 mM NaCl, 10 mM EDTA, 1% BSA, and 0.075 N NaOH). Neurons were lysed in the modified RIPA buffer (50 mM Tris–HCl, 150 mM NaCl, 1% NP-40, 0.5% sodium deoxylate, 1 mM EDTA, and protease inhibitors). Lysates were cleared by centrifugation at 10,000g for 10 min at 4 ℃ and incubated at 4 ℃ over-night with 70 μl of 50% streptavidin beads. Endocytosis of ErbB proteins was assayed using cleavable biotin. Bead-associated proteins were subjected to Western blot analysis.

References:

[1]. Yu Liu, Yan-Mei Tao, Ran-Sook Woo, Wen-Cheng Xiong, Lin Mei. Stimulated ErbB4 internalization is necessary for neuregulin signaling in neurons. Biochemical and Biophysical Research Communications 354 (2007) 505–510.

生物活性

描述NHS-SS-Biotin是一种细胞通透性的和伯胺反应性的生物素化试剂。
靶点proteins     
IC50