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Protein Labeling Reagents
Protein labeling reagents are designed to selectively label target proteins. These products include classic dyes, radioisotope labels, biotinylation reagents, fluorescent labels, molecular probes, assays, and labeling kits.
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Alexa Fluor™ 647 NHS Ester (Succinimidyl Ester) Invitrogen™
Alexa Fluor™ 647 is a bright and photostable far-red dye with excitation ideally suited to the 633 nm laser line.
Alexa Fluor™ 488 NHS Ester (Succinimidyl Ester) Invitrogen™
Alexa Fluor™ 488 is a bright, green-fluorescent dye with excitation ideally suited for the 488 nm laser line.
EZ-Link™ Sulfo NHS-LC-LC-Biotin, No-Weigh™ Format Thermo Scientific™
Thermo Scientific™ EZ-Link Sulfo-NHS-LC-LC-Biotin is a long-chain biotinylation reagent for labeling antibodies, proteins and other molecules that have primary amines. Additional Information and Online Ordering
pHrodo™ Dyes for Amine Labeling Invitrogen™
Perform cell internalization studies with low signal-to-background and high specificity using the pHrodo pH sensor dyes, including pHrodo Red, Green, and Deep Red dyes. These dyes can be conjugated to biomolecules such as antibodies, and become highly fluorescent only when found in acidic...
Alexa Fluor™ 594 NHS Ester (Succinimidyl Ester) Invitrogen™
Alexa Fluor™ 594 is a bright red dye. Used for stable signal generation in imaging and flow cytometry, Alexa Fluor™ 594 dye is water soluble and pH-insensitive from pH 4 to pH 10.
Fluorescein-5-Maleimide Thermo Scientific™
Thermo Scientific™ FITC and Fluorescein Labeling Reagents and Kits are high-performance derivatives of fluorescein dye, activated for easy and reliable labeling of antibodies, proteins and other molecules for use as fluorescent probes.
Alexa Fluor™ 488 C5 Maleimide Invitrogen™
Alexa Fluor™ 488 is a bright, green fluorescent dye with excitation ideally suited to the 488 nm laser line.
EZ-Link™ NHS-PEG12-Biotin Thermo Scientific™
Thermo Scientific™ EZ-Link NHS-PEG12-Biotin is very long, pegylated biotinylation reagent for simple and efficient biotin labeling of antibodies, proteins and other primary amine-containing macromolecules.
Alexa Fluor Carboxylic Acid tris(triethylammonium) salts are non-reactive, free acid forms of Alexa Fluor dyes. These carboxylic acid derivatives can be converted to an amine-reactive ester using standard chemical techniques or coupled to hydrazines, hydroxylamines, and amines in aqueous solution...
EZ-Link™ NHS-PEG4-Biotin, No-Weigh™ Format Thermo Scientific™
Thermo Scientific™ EZ-Link NHS-PEG4-Biotin is a pegylated, water-soluble reagent for simple and efficient biotin labeling of antibodies, proteins and other primary amine-containing macromolecules.
Alexa Fluor™ 546 NHS Ester (Succinimidyl Ester) Invitrogen™
Alexa Fluor™ 546 is a bright yellow dye. Used in imaging and flow cytometry, Alexa Fluor™ 546 dye is water soluble and pH-insensitive from pH 4 to pH 10.
EZ-Link™ HPDP-Biotin, No-Weigh™ Format Thermo Scientific™
Thermo Scientific™ EZ-Link HPDP-Biotin is pyridyldithiol-activated, sulfhydryl-reactive biotinylation reagent that conjugates via a cleavable (reversible) disulfide bond to enable use in a variety of purification methods.
DyLight™ 650-4xPEG NHS Ester Thermo Scientific™
Thermo Scientific DyLight 650-4xPEG Amine-Reactive Dye is a derivative of our high-performance DyLight 650 Dye that can be used to fluorescently label antibodies and other proteins for far-red detection.
DyLight™ 755 NHS Ester Thermo Scientific™
Thermo Scientific™ Amine-Reactive DyLight Dyes are NHS ester-activated DyLight Fluors for fluorescent labeling of antibodies and other proteins to be used as molecular probes for cellular imaging and other fluorescence detection methods.
EZ-Link™ TFPA-PEG3-Biotin Thermo Scientific™
Thermo Scientific™ EZ-Link TFPA-PEG3-Biotin is an efficient, photoactivatable reagent based on tetrafluorophenyl azide for biotinylation, and which includes a 3-unit polyethylene glycol (PEG) spacer arm.
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Protein labeling reagents are reactive dyes that attach to a specific functional group (i.e., amine or thiol) on a target biomolecule allowing for its subsequent detection or purification. Use the Protein Labeling Reagents Selection Tool to find the best reactive dye for your application or learn...
Use this interactive selection guide to find the right protein labeling reagent for your experiment. Step 1: Choose your options. Simply select the features you need from the options listed. As you define your parameters the list of available reagents matching your selection will appear in the panel...
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Flyer: No-Stain Protein Labeling Reagent
Can proteins in a gel be transferred to a membrane after the gel has been labeled using the No-Stain Protein Labeling Reagent?