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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 (12)

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thiol

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1 – 15 of 107 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

Thiol-PEG2-acid, TRC

CAS: 1379649-73-6 Molecular Formula: C7H14O4S Molecular Weight (g/mol): 194.25

CAS 1379649-73-6
Molecular Weight (g/mol) 194.25
Molecular Formula C7H14O4S
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™ 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
9

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
10

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
11
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Thermo Scientific™ Pierce™ MMTS (methyl methanethiosulfonate)

Methyl methanethiosulfonate (CAS 2949-92-0); reversibly blocks cysteines (sulfhydryl groups) to facilitate study of enzyme activation and protein functions.

12

Thermo Scientific™ Pierce™ NEM (N-ethylmaleimide)

Small, sulfhydryl-reactive (maleimide) compound to permanently block reduced cysteines of proteins or peptides to prevent disulfide bond formation.

13
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Thermo Scientific™ Pierce™ SMCC

No-Weigh™ Format

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) 334.32
Solubility DMF, DMSO
Labeling Method Chemical Labeling
Crosslinker Type Heterobifunctional
Chemical Reactivity Amine-Sulfhydryl
Cell Permeability Yes
Format Standard, Single-use
Product Type Crosslinker
Spacer Short (<10 Å)
Reactive Moiety Maleimide, NHS Ester
Spacer Arm Length 8.3 Å
PEGylated No
14

Thermo Scientific™ EZ-Link™ HPDP-Biotin, No-Weigh™ Format

Solubility DMF (Dimethylformamide),DMSO (Dimethylsulfoxide)
Label Type Biotin & Analogs
15

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.

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