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Biotin-PEG2-azide *CAS 945633-30-7*

Biotin-PEG2-Azide *CAS 945633-30-7* is a non-cleavable, azide-activated biotinylation reagent designed for use in bioconjugation applications. It selectively reacts with terminal alkynes to form stable triazole linkages, either via copper-catalyzed click reactions or Cu-free click reactions with strained cyclooctynes (e.g., DBCO or BCN compounds). Additionally, it can react with phosphine-labeled molecules through Staudinger chemistry. These reactions are bioorthogonal, meaning they do not interfere with biological systems. The inclusion of a hydrophilic PEG2 spacer in Biotin-PEG2-Azide enhances its aqueous solubility and reduces steric hindrance, particularly when binding to avidin molecules. This reagent is particularly useful for detecting cellular alkyne cholesterol analogs and for preparing multifunctional benzophenone linkers used in pull-down assays, photoaffinity labeling, and double-click stapling techniques.

References

View all 29 references: Citation Explorer
An Acetyl-Click Chemistry Assay to Measure Histone Acetyltransferase 1 Acetylation.
Authors: Rajkumar, Shreenidhi and Dixon, Danielle and Lipchik, Andrew M and Gruber, Joshua J
Journal: Journal of visualized experiments : JoVE (2024)
Rapid cell type-specific nascent proteome labeling in Drosophila.
Authors: Villalobos-Cantor, Stefanny and Barrett, Ruth M and Condon, Alec F and Arreola-Bustos, Alicia and Rodriguez, Kelsie M and Cohen, Michael S and Martin, Ian
Journal: eLife (2023)
Capture, Release, and Identification of Newly Synthesized Proteins for Improved Profiling of Functional Translatomes.
Authors: Phillips, Nancy J and Vinaithirthan, Bala M and Oses-Prieto, Juan A and Chalkley, Robert J and Burlingame, Alma L
Journal: Molecular & cellular proteomics : MCP (2023): 100497
Selective Removal of Unhydrolyzed Monolinked Peptides from Enriched Crosslinked Peptides To Improve the Coverage of Protein Complex Analysis.
Authors: An, Yuxin and Zhao, Qun and Gao, Hang and Zhao, Lili and Li, Xiao and Zhang, Xiaodan and Liang, Zhen and Zhang, Lihua and Zhang, Yukui
Journal: Analytical chemistry (2022): 3904-3913
Ultrastructural localization of de novo synthesized phosphatidylcholine in yeast cells by freeze-fracture electron microscopy.
Authors: Tsuji, Takuma and Fujimoto, Toyoshi
Journal: STAR protocols (2021): 100990
Page updated on November 12, 2024

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Physical properties

Molecular weight

400.50

Solvent

DMSO

Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22

Storage

Freeze (< -15 °C); Desiccated
UNSPSC12352200

CAS

945633-30-7
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