(S)-2-Amino-4-azidobutanoic acid hydrochloride
For research use only!
Shipping: shipped on blue ice
Storage Conditions: store at 4 °C
Shelf Life: 12 months
Molecular Formula: C4H8N4O2 * HCl
Molecular Weight: 144.13 g/mol + 36.45 g/mol
Purity: > 99 % (TLC, Titration)
Form: white powder
Proteins synthesis monitoring[1,2,3]
4-Azido-L-homoalanine (L-AHA) provides a non-radioactive alternative to analyze the global protein synthesis in cell culture. It is cell-permeable and randomly incorporated instead of methionine during translation[1,2,3]. The resulting azide-labeled full-length proteins can subsequently be detected via Cu(I)-catalyzed or Cu(I)-free click chemistry that offers the choice to introduce a Biotin group (via Azides of Biotin or DBCO-containing Biotin, respectively) for subsequent purification tasks or a fluorescent group (via Azides of fluorescent dyes or DBCO-containing fluorescent dyes, respectively) for subsequent microscopic imaging.
Presolski et al. and Hong et al. provide a general protocol for Cu(I)-catalyzed click chemistry reactions that may be used as a starting point for the set up and optimization of individual assays.
 Dieck et al. (2012) Metabolic Labeling with Noncanonical Amino Acids and Visualisation by Chemoselective Fluorescent Tagging. Current Protocols in Cell Biology 7:7.11.1.
 Kiick et al. (2002) Incorporation of azides into recombinant proteins for chemoselective modification by the Staudinger ligation. Proc. Natl. Acad. Sci. USA 99 (1):19.
 Dieterich et al. (2010) In situ visualization and dynamics of newly synthesized proteins in rat hippocampal neurons. Nature Neuroscience 13 (7): 897.
 Presolski et al. (2011) Copper-Catalyzed Azide-Alkyne Click Chemistry for Bioconjugation. Current Protocols in Chemical Biology 3:153.
 Hong et al. (2011) Analysis and Optimization of Copper-Catalyzed Azide-Alkyne Cycloaddition for Bioconjugation. Angew. Chem. Int. Ed. 48:9879.