ReadiLink™ Rapid FITC Antibody Labeling Kit Microscale Optimized for Labeling 50 μg Antibody Per Reaction

Name: ReadiLink™ Rapid FITC Antibody Labeling Kit *Microscale Optimized for Labeling 50 μg Antibody Per Reaction*
Brand: AAT Bioquest
SKU: 1299
Price: 174 USD
Availability: InStock

FITC is still the most popular fluorescent labeling dye for preparing green fluorescent bioconjugates. However, most of commercial FITC labeling kits require intensive hands-on time. This FITC ReadiLink™ labeling kit essentially only requires 2 simple mixing steps without a column purification needed. The kit provides all the essential components for labeling ~2x50 ug antibody. Each of the two vials of FITC dye provided in the kit is optimized for labeling ~50 µg antibody. This FITC protein labeling kit provides a convenient method to label monoclonal, polyclonal antibodies or other proteins (>10 kDa).

Figure 1. Overview of the ReadiLink™ Rapid Antibody Labeling protocol. In just two simple steps, and with no purification necessary, covalently label microgram amounts of antibodies in under an hour.

Example protocol

AT A GLANCE

Important

Warm all the components and centrifuge the vials briefly before opening, and immediately prepare the required solutions before starting your conjugation. The following protocol is for recommendation.

PREPARATION OF WORKING SOLUTION

Protein working solution (Solution A)

For labeling 50 µg of protein (assuming the target protein concentration is 1 mg/mL), mix 5 µL (10% of the total reaction volume) of Reaction Buffer (Component B) with 50 µL of the target protein solution.
Note     If you have a different protein concentration, adjust the protein volume accordingly to make ~50 µg of protein available for your labeling reaction.
Note     For labeling 100 µg of protein (assuming the target protein concentration is 1 mg/mL), mix 10 µL (10% of the total reaction volume) of Reaction Buffer (Component B) with 100 µL of the target protein solution.
Note     The protein should be dissolved in 1X phosphate buffered saline (PBS), pH 7.2 - 7.4; if the protein is dissolved in glycine buffer, it must be dialyzed against 1X PBS, pH 7.2 - 7.4, or use Amicon Ultra-0.5, Ultracel-10 Membrane, 10 kDa (cat# UFC501008 from Millipore) to remove free amines or ammonium salts (such as ammonium sulfate and ammonium acetate) that are widely used for protein precipitation.
Note     Impure antibodies or antibodies stabilized with bovine serum albumin (BSA) or gelatin will not be labeled well.
Note     For optimal labeling efficiency, a final protein concentration range of 1 - 2 mg/mL is recommended, with a significantly reduced conjugation efficiency at less than 1 mg/mL.

SAMPLE EXPERIMENTAL PROTOCOL

Run conjugation reaction

Add the protein working solution (Solution A) to ONE vial of labeling dye (Component A), and mix them well by repeatedly pipetting for a few times or vortex the vial for a few seconds.
Note If labeling 100 µg of protein, use both vials (Component A) of labeling dye by dividing the 100 µg of protein into 2 x 50 µg of protein and reacting each 50 µg of protein with one vial of labeling dye. Then combine both vials for the next step.
Keep the conjugation reaction mixture at room temperature for 30 - 60 minutes.
Note The conjugation reaction mixture can be rotated or shaken for longer time if desired.

Stop Conjugation reaction

Add 5 µL (for 50 µg protein) or 10 µL (for 100 µg protein) which is 10% of the total reaction volume of TQ™-Dyed Quench Buffer (Component C) into the conjugation reaction mixture; mix well.
Incubate at room temperature for 10 minutes. The labeled protein (antibody) is now ready to use.

Storage of Protein Conjugate

The protein conjugate should be stored at > 0.5 mg/mL in the presence of a carrier protein (e.g., 0.1% bovine serum albumin). For longer storage, the protein conjugates could be lyophilized or divided into single-used aliquots and stored at ≤ –20°C.

Spectrum

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Product family

Name	Excitation (nm)	Emission (nm)	Extinction coefficient (cm ^-1 M ^-1)	Quantum yield	Correction Factor (260 nm)	Correction Factor (280 nm)
ReadiLink™ Rapid Cy3 Antibody Labeling Kit Microscale Optimized for Labeling 50 μg Antibody Per Reaction	555	569	150000¹	0.15¹	0.07	0.073
ReadiLink™ Rapid Cy3 Antibody Labeling Kit Production Scale	555	569	150000¹	0.15¹	0.07	0.073
ReadiLink™ Rapid Cy5 Antibody Labeling Kit Microscale Optimized for Labeling 50 μg Antibody Per Reaction	651	670	250000¹	0.27¹, 0.4²	0.02	0.03
ReadiLink™ Rapid Cy5 Antibody Labeling Kit Production Scale	651	670	250000¹	0.27¹, 0.4²	0.02	0.03
ReadiLink™ Rapid Cy7 Antibody Labeling Kit Microscale Optimized for Labeling 50 μg Antibody Per Reaction	756	779	250000	0.3	0.05	0.036
ReadiLink™ Rapid Cy7 Antibody Labeling Kit Production Scale	756	779	250000	0.3	0.05	0.036
ReadiLink™ Rapid XFD488 Antibody Labeling Kit Production Scale	499	520	71000	0.92¹	0.30	0.11
ReadiLink™ Rapid XFD488 Antibody Labeling Kit XFD488 Same Structure to Alexa Fluor™ 488	499	520	71000	0.92¹	0.30	0.11
ReadiLink™ Rapid XFD555 Antibody Labeling Kit Production Scale	553	568	150000	0.1¹	0.08	0.08
ReadiLink™ Rapid XFD555 Antibody Labeling Kit XFD555 Same Structure to Alexa Fluor™ 555	553	568	150000	0.1¹	0.08	0.08
ReadiLink™ Rapid XFD594 Antibody Labeling Kit Production Scale	590	618	90000	0.66¹	0.43	0.56
ReadiLink™ Rapid XFD594 Antibody Labeling Kit XFD594 Same Structure to Alexa Fluor™ 594	590	618	90000	0.66¹	0.43	0.56
ReadiLink™ Rapid XFD647 Antibody Labeling Kit Production Scale	650	671	239000	0.33¹	0.00	0.03
ReadiLink™ Rapid XFD647 Antibody Labeling Kit XFD647 Same Structure to Alexa Fluor™ 647	650	671	239000	0.33¹	0.00	0.03
ReadiLink™ Rapid XFD750 Antibody Labeling Kit Production Scale	752	776	240000	0.12¹	0.00	0.04
ReadiLink™ Rapid XFD750 Antibody Labeling Kit XFD750 Same Structure to Alexa Fluor™ 750	752	776	240000	0.12¹	0.00	0.04
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Citations

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Authors: Gao, Cen and Zhang, Xingxing and Chen, Jian and Zhao, Jiayuan and Liu, Yanmei and Zhang, Jue and Wang, Jing
Journal: Medicina oral, patologia oral y cirugia bucal (2018): e344

Role of reactive oxygen species-mediated MAPK and NF-$\kappa$B activation in polygonatum cyrtonema lectin-induced apoptosis and autophagy in human lung adenocarcinoma A549 cells
Authors: Liu, Tao and Wu, Lei and Wang, Di and Wang, Haiyang and Chen, Jinwu and Yang, Chunlan and Bao, Jinku and Wu, Chuanfang
Journal: The Journal of Biochemistry (2016): 315--324

Determination of sodium benzoate in food products by fluorescence polarization immunoassay
Authors: Ren, Linlin and Meng, Meng and Wang, Peng and Xu, Zhihuan and Eremin, Sergei A and Zhao, Junhong and Yin, Yongmei and Xi, Rimo
Journal: Talanta (2014): 136--143

Complexes containing cationic and anionic pH-sensitive liposomes: comparative study of factors influencing plasmid DNA gene delivery to tumors
Authors: Chen, Yan and Sun, Ji and Lu, Ying and Tao, Chun and Huang, Jingbin and Zhang, He and Yu, Yuan and Zou, Hao and Gao, Jing and Zhong, Yanqiang
Journal: International journal of nanomedicine (2013): 1573

Swimming behavior of the monotrichous bacterium Pseudomonas fluorescens SBW25
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References

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Isothiocyanato Boron Dipyrromethenes - The First BODIPY Analogues of Fluorescein Isothiocyanate (FITC)
Authors: Malatesti N, Hudson R, Smith K, Savoie H, Rix K, Welham K, Boyle RW.
Journal: Photochem Photobiol. (2006)

Detection of FITC-cortisol via modulated supraparticle lighthouses
Authors: Petkus MM, McLauchlin M, Vuppu AK, Rios L, Garcia AA, Hayes MA.
Journal: Anal Chem (2006): 1405

Clathrin-mediated endocytosis of FITC-albumin in alveolar type II epithelial cell line RLE-6TN
Authors: Yumoto R, Nishikawa H, Okamoto M, Katayama H, Nagai J, Takano M.
Journal: Am J Physiol Lung Cell Mol Physiol (2006): L946

Fluorescein isothiocyanate labelled bovine serum albumin (FITC-BSA) as a model protein drug: opportunities and drawbacks
Authors: Wischke C, Borchert HH.
Journal: Pharmazie (2006): 770

Increased FITC fluorescence on LPS stimulated neutrophils cultured in whole blood
Authors: Wilkins RC, Bellier PV, Kutzner BC, McNamee JP.
Journal: Cell Biol Int (2006): 394

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