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Protein Labeling Reagents

Various reagents designed to selectively label target proteins. Products include classic dyes, radioisotope labels, biotinylation reagents, fluorescent labels, molecular probes, assays, and labeling kits.
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Promotions Available

Invitrogen™ Alexa Fluor™ 488 NHS Ester (Succinimidyl Ester)

Alexa Fluor™ 488 is a bright, green-fluorescent dye with excitation ideally suited for the 488 nm laser line.

EDGE
Shipping Condition Room Temperature
Content And Storage Store in freezer (-5 to -30°C) and protect from light.
Product Type Dye
Label or Dye Alexa Fluor™ 488
Emission 517 nm
Excitation 494 nm
Label Type Alexa Fluor
Chemical Reactivity Amine
Product Line Alexa Fluor
2
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Thermo Scientific™ EZ-Link™ NHS-LC-Biotin

Biotinylate protein amines (e.g., lysines) with this long-chain (22.4A), NHS-ester biotinylation reagent containing a membrane permeable spacer arm for intracellular labeling.

EDGE
3
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Molecular Probes™ Alexa Fluor™ 647 Azide, Triethylammonium Salt

The far red-fluorescent Alexa Fluor™ 647 azide is reactive with terminal alkynes via a copper-catalyzed click reaction.

EDGE
4
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Invitrogen™ Fluorescein-5-Isothiocyanate (FITC 'Isomer I')

Fluorescein-5-Isothiocyanate (FITC 'Isomer I')

EDGE
Shipping Condition Room Temperature
Content And Storage Store in freezer (-5 to -30°C) and protect from light.
Product Type Fluorescein-5-Isothiocyanate
Label or Dye FITC (Fluorescein)
Reactive Moiety Isothiocyanate
Label Type Classic Dyes
Chemical Reactivity Amine
5

Invitrogen™ Biocytin (ε-Biotinoyl-L-Lysine)

Biocytin (ε-Biotinoyl-L-Lysine)

EDGE
6
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Invitrogen™ Alexa Fluor™ 647 C2 Maleimide

Alexa Fluor™ 647 is a bright, far-red fluorescent dye with excitation ideally suited for the 594 nm or 633 nm laser lines.

EDGE
7
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Thermo Scientific™ EZ-Link™ Sulfo-NHS-Biotin

Thermo Scientific™ EZ-Link™ Sulfo-NHS-Biotin is a short-chain, water-soluble biotinylation reagent for labeling antibodies, proteins and other molecules that have primary amines.

EDGE
Cell Permeability Cell-Impermeant
Product Type Sulfo-NHS-Biotin
Spacer Short
Label or Dye Biotin
Solubility DMF (Dimethylformamide),DMSO (Dimethylsulfoxide),Water
Chemical Reactivity Amine
Product Line EZ-Link
8
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Invitrogen™ Alexa Fluor™ 594 C5 Maleimide

Alexa Fluor™ 594 is a bright, red fluorescent dye that can be excited using the 561 nm or 594 nm laser lines.

EDGE
9
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Molecular Probes™ Alexa Fluor™ 488 Alkyne (Alexa Fluor™ 488 5-Carboxamido-(Propargyl), Bis(Triethylammonium Salt)), 5-isomer

Alexa Fluor™ 488 Alkyne (Alexa Fluor™ 488 5-Carboxamido-(Propargyl), Bis(Triethylammonium Salt)), 5-isomer

EDGE
10

Thermo Scientific™ Pierce™ Iodination Tubes

Reliably label (iodinate) proteins and peptides with iodine-125 using glass test tubes that are pre-coated (activated) with iodination reagent.

EDGE
11
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Thermo Scientific™ EZ-Link™ Maleimide-PEG2-Biotin, No-Weigh™ Format

Biotinylate reduced cysteines with this short, maleimide-activated, sulfhydryl-reactive biotinylation reagent containing a 2-unit PEG spacer arm to enhance water solubility.

EDGE
Cell Permeability Cell-Impermeant
Product Type Maleimide-PEG2-Biotin
Label or Dye Biotin
Solubility DMF (Dimethylformamide),DMSO (Dimethylsulfoxide),Water
Reactive Moiety Maleimide
Chemical Reactivity Thiol
Product Line EZ-Link
12
Promotions Available

Thermo Scientific™ EZ-Link™ NHS-PEG4-Biotin

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.

EDGE
Cell Permeability Cell-Impermeant
Content And Storage Store at -20°C.
Product Type NHS-PEG4-Biotin
Label or Dye Biotin
Solubility DMF (Dimethylformamide),DMSO (Dimethylsulfoxide),Water
Chemical Reactivity Amine
Product Line EZ-Link
13
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Invitrogen™ 4-Acetamido-4'-Maleimidylstilbene-2,2'-Disulfonic Acid, Disodium Salt

4-acetamido-4'-maleimidylstilbene-2,2'-disulfonic acid, disodium salt

EDGE
14
Promotions Available

Molecular Probes™ Tetramethylrhodamine (TAMRA) Azide (Tetramethylrhodamine 5-Carboxamido-(6-Azidohexanyl)), 5-isomer

Tetramethylrhodamine (TAMRA) Azide (Tetramethylrhodamine 5-Carboxamido-(6-Azidohexanyl)), 5-isomer

EDGE
15

Invitrogen™ SiteClick™ sDIBO Alkyne Kits for Antibody Labeling

Easily attach Alexa Fluor™ pHrodo™ and Biotin sDIBO Alkyne tags to azido-modified antibodies using SiteClick™ chemistry.

EDGE
Shipping Condition Wet Ice
Labeling Target Azido modified antibodies
Content And Storage Store in refrigerator (2°C to 8°C) and protect from light.
Labeling Method Click Chemistry
Chemical Reactivity Azide