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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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1

Molecular Probes™ Alexa Fluor™ 488 TFP ester  DFS Item

Alexa Fluor™ dyes are reactive molecules that can be used to add a fluorescent label to the primary amines (R-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.

Shipping Condition Room Temperature
Product Type Dye
Emission 515 nm
Excitation 495 nm
Product Line Alexa Fluor
2

Invitrogen™ Alexa Fluor™ 514 NHS Ester (Succinimidyl Ester)  DFS Item

Used for stable signal generation in imaging and flow cytometry, Alexa Fluor™ 514 dye is water soluble and pH-insensitive from pH 4 to pH 10.

4

Invitrogen™ Alexa Fluor™ 680 NHS Ester (Succinimidyl Ester)  DFS Item

Alexa Fluor™ 680 is a bright and photostable near-IR dye that is spectrally similar to the Cy5.5 dye.

Shipping Condition Room Temperature
Product Type Dye
Emission 707 nm
Excitation 684 nm
Product Line Alexa Fluor
6

Thermo Scientific™ DyLight™ 405 NHS Ester

Label antibodies or other proteins as probes for fluorescence imaging assays with the full spectral range of NHS ester-activated DyLight Dyes.

Labeling Target Proteins
Content And Storage Store desiccated at -20°C, protected from light.
Product Type Dye
Label or Dye DyLight™ 405
Reactive Moiety Active Ester, Succinimidyl Ester, NHS Ester
Solubility DMF (Dimethylformamide)
Emission 420
Excitation 400
Label Type DyLight Fluors
Chemical Reactivity Amine
Product Line DyLight
8

Invitrogen™ BODIPY™ TMR-X NHS Ester (Succinimidyl Ester)  DFS Item

BODIPY™ TMR-X dye is bright, orange fluorescent dye with similar excitation and emission to tetramethyrhodamine (TRITC) or Alexa Fluor™ 555 dye.

9

Thermo Scientific™ Sulfo-SBED Biotin Label Transfer Reagent, No-Weigh™ Format

Chemically tag purified proteins at primary amines to covalently crosslink and transfer biotinylation to protein interaction binding partners.

10

Invitrogen™ CPM (7-Diethylamino-3-(4'-Maleimidylphenyl)-4-Methylcoumarin)  DFS Item

The thiol-reactive coumarin, CPM is very weakly fluorescent until reacted with thiols producing a conjugate with excitation/emission maxima of ∼384/470 nm.

12

Thermo Scientific™ EZ-Link™ Pentylamine-Biotin

Biotinylate proteins or surfaces using EDC or other amine-reactive crosslinkers with this short (18.9A) biotinylation reagent.

13

Thermo Scientific™ EZ-Link™ TFPA-PEG3-Biotin

Biotinylate molecules without common functional groups for coupling with this efficient, light-activated biotinylation reagent based on tetrafluorophenyl azide.

14

Invitrogen™ Click-IT™ Geranylgeranyl Alcohol, Azide, mixed isomers  DFS Item
GREENER_CHOICE

Achieve greater detection sensitivity in 1-D gels and western blots

15

Invitrogen™ Rhodamine Green™-X, Succinimidyl Ester, Hydrochloride, mixed isomers  DFS Item

Rhodamine Green™-X, Succinimidyl Ester, Hydrochloride, mixed isomers