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Crosslinking, Labeling and Protein Modification

A variety of reagents used to modify proteins for identification, analysis, research, and other applications.
Protein Labeling Reagents (89)
Crosslinking Reagents (23)
Protein Modification Reagents (9)

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1 – 15 of 106 results
1

Thermo Scientific™ LanthaScreen™ Thiol Reactive Tb Chelate

LanthaScreen™ Thiol Reactive Tb Chelate

Shipping Condition Dry Ice
Content And Storage LanthaScreen™ TR-FRET Labeling Reagents are provided lyophilized. Store at -20°C, desiccated, and protected from light. After reconstitution, terbium lanthanide chelates should be stored on ice and used within the same day.
Product Type Thiol Reactive Tb Chelate
Product Line LanthaScreen™
2

Invitrogen™ Measure-IT™ Thiol Assay Kit

Provides easy and accurate quantitation of thiol

3

Invitrogen™ Thiol and Sulfide Quantitation Kit

Ultrasensitive colorimetric assay for quantifying both protein and nonprotein thiols

4

Thermo Scientific™ CT(PEG)12 Carboxy-PEG-Thiol Compound

CT(PEG)n: carboxylic acid and sulfhydryl compound with a 12-unit polyethylene glycol (PEG) spacer; carboxylate and pegylate quantum dots, gold surfaces, silver.

5

Thermo Scientific™ MT(PEG)4 Methyl-PEG-Thiol Compound

MT(PEG)n: methyl and sulfhydryl compound with a 4-unit polyethylene glycol (PEG) spacer; methylate and pegylate quantum dots, gold surfaces, silver.

6

Thermo Scientific™ Pierce™ Sulfo-SANPAH, No-Weigh™ Format

EDGE
Shipping Condition Ambient
Content And Storage Upon receipt store at -20°C protected from light and moisture.
Cleavable By Thiols
Water Soluble Yes
Form Powder
Molecular Weight (g/mol) 492.4
Solubility Water
Labeling Method Chemical Labeling
Crosslinker Type Heterobifunctional
Chemical Reactivity Amine-Nonselective
Cell Permeability No
Format Standard, Single-use
Product Type Crosslinker
Spacer Medium (10 to 30 Å)
Spacer Arm Length 18.2 Å
PEGylated No
7

Thermo Scientific™ Pierce™ Iodoacetic Acid

Get rapid carboxymethylation of reduced cysteine residues with Thermo Scientific™ Pierce™ Iodoacetic Acid and Iodoacetamide.

EDGE
8

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™
9

Thermo Scientific™ EZ-Link™ Maleimide-PEG11-Biotin

Biotinylate reduced cysteines with this long, maleimide-activated, sulfhydryl-reactive biotinylation reagent with an 11-unit PEG spacer arm to enhance solubility and reach.

EDGE
10

Thermo Scientific™ Pierce™ DSP, No-Weigh™ Format

Crosslink amines to amines with dithiobis succinimidyl propionate, composed of NHS-ester groups and disulfide-containing, 12.0A spacer arm and cleavable with reducing agents.

EDGE
Content And Storage Upon receipt store desiccated at 4°C.
Description DSP
Cleavable By Thiols
Water Soluble No
Form Powder
Molecular Weight (g/mol) 404.42
Solubility DMF, DMSO
Labeling Method Chemical Labeling
Crosslinker Type Homobifunctional
Chemical Reactivity Amine-Amine
Cell Permeability Yes
Format Standard, Single-use, Premium-grade
Product Type Crosslinker
Spacer Medium (10 to 30 Å)
Reactive Moiety NHS Ester
Spacer Arm Length 12.0 Å
PEGylated No
11

Thermo Scientific™ Pierce™ Premium Grade DSP (dithiobis(succinimidyl propionate))

Optimize applications where product integrity and risk minimization are paramount with our highest quality formulation of this popular amine-reactive, cleavable crosslinker.

EDGE
Shipping Condition Ambient
Content And Storage Upon receipt store desiccated at 4°C.
Cleavable By Thiols
Water Soluble No
Form Powder
Molecular Weight (g/mol) 404.42
Solubility DMF, DMSO
Labeling Method Chemical Labeling
Crosslinker Type Homobifunctional
Chemical Reactivity Amine-Amine
Cell Permeability Yes
Format Standard, Single-use, Premium-grade
Product Type Crosslinker
Spacer Medium (10 to 30 Å)
Formulation Dithiobis(succinimidylpropionate); powder solid
Reactive Moiety NHS Ester
Spacer Arm Length 12.0 Å
Product Line Pierce™
PEGylated No
12

Invitrogen™ Alexa Fluor™ 488 C5 Maleimide

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

EDGE
13

Invitrogen™ Eosin-5-Maleimide

eosin-5-maleimide

EDGE
14

Invitrogen™ Alexa Fluor™ 555 C2 Maleimide

Alexa Fluor™ 555 is a bright orange dye. Used for stable signal generation in imaging and flow cytometry, Alexa Fluor™ 555 dye is water soluble and pH-insensitive from pH 4 to pH 10.

EDGE
15

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