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Protein Modification Reagents

Chemical agents used to modify the amino acid side chains of proteins in order to alter their native charges, block or expose reactive binding sites, inactivate functional groups, and change functional groups to create targets for crosslinking and labeling.
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Keyword Search:
16 – 30 of 5,116 results
16

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.

EDGE
17

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.

EDGE
18

Thermo Scientific™ Pierce™ Sulfhydryl Addition Kit

Modify protein primary amines to create free sulfhydryl groups for labeling, crosslinking or immobilization techniques; complete kit with SATA reagent and hydroxylamine.

EDGE
19

Thermo Scientific™ MM(PEG)24 Methyl-PEG-Maleimide Reagent

Pegylate sulfhydryls (-SH groups) on proteins (cysteine residues) or assay surfaces using MS(PEG); sulfhydryl-reactive (maleimide), PEG compounds (12 and 24 EG units).

EDGE
20

Thermo Scientific™ Pierce™ Cysteine-HCl

Make sulfhydryl assay standards or perform protein refolding experiments using this pure, crystalline cysteine hydrochloride (Cys-HCl).

EDGE
21

Thermo Scientific™ MA(PEG)12 Methyl-PEG-Amine Compound

MA(PEG)n: methyl- and amine-capped polyethylene glycol compounds containing 4 to 24 PEG units; use for surface-modification and molecule-pegylation applications.

EDGE
Content And Storage Upon receipt store product at -20°C protected from moisture. Product is shipped at ambient temperature.
Product Type Amine Compound
Form Solid
Spacer 12 ethylene glycol units
Solubility Water
Reactive Moiety Amine, Primary Amine
Label Type Polyethylene Glycol (PEG), Blocking Groups
Chemical Reactivity Aldehyde
22

Thermo Scientific™ MS(PEG)24 Methyl-PEG-NHS-Ester Reagent

Pegylate amines (-NH2 groups) on proteins (lysine residues) or assay surfaces using MS(PEG)n, amine-reactive (NHS ester), methyl-capped PEG compounds (4 to 24 EG units).

EDGE
23

Thermo Scientific™ MA(PEG)4 Methyl-PEG-Amine Compound

MA(PEG)n: methyl- and amine-capped polyethylene glycol compounds containing 4 to 24 PEG units; use for surface-modification and molecule-pegylation applications.

EDGE
Content And Storage Upon receipt store product at -20°C protected from moisture. Product is shipped at ambient temperature.
Product Type Amine Compound
Form Liquid
Spacer 4 ethylene glycol units
Solubility Water
Reactive Moiety Amine, Primary Amine
Label Type Polyethylene Glycol (PEG), Blocking Groups
Chemical Reactivity Ketone
24

Thermo Scientific™ MA(PEG)24 Methyl-PEG-Amine Compound

MA(PEG)n: methyl- and amine-capped polyethylene glycol compounds containing 4 to 24 PEG units; use for surface-modification and molecule-pegylation applications.

EDGE
25

Thermo Scientific™ MS(PEG)4 Methyl-PEG-NHS-Ester Reagent

Pegylate amines (-NH2 groups) on proteins (lysine residues) or assay surfaces using MS(PEG)n, amine-reactive (NHS ester), methyl-capped PEG compounds (4 to 24 EG units).

EDGE
Content And Storage Store desiccated at -20°C.
Product Type NHS-Ester Reagent
Form Solid
Spacer 4 ethylene glycol units
Solubility Water
Reactive Moiety Active Ester, Succinimidyl Ester, NHS Ester
Label Type Polyethylene Glycol (PEG), Blocking Groups
Chemical Reactivity Amine
Product Line Pierce
26

Thermo Scientific™ Pierce™ Premium Grade TCEP-HCl

Optimize applications where product integrity and risk minimization are paramount with our highest quality formulation of this disulfide reducing agent.

EDGE
Content And Storage Upon receipt store product at room temperature in sealed container to prevent oxidation. Product is shipped at ambient temperature.
Product Type Disulfide Reducing Reagent
Product Line Pierce
27

Thermo Scientific™ MS(PEG)12 Methyl-PEG-NHS-Ester Reagent

Pegylate amines (-NH2 groups) on proteins (lysine residues) or assay surfaces using MS(PEG)n, amine-reactive (NHS ester), methyl-capped PEG compounds (4 to 24 EG units).

EDGE
Content And Storage Store desiccated at -20°C.
Product Type NHS-Ester Reagent
Spacer 12 ethylene glycol units
Solubility Water
Reactive Moiety Active Ester, Succinimidyl Ester, NHS Ester
Label Type Polyethylene Glycol (PEG), Blocking Groups
Chemical Reactivity Amine
28

Thermo Scientific™ TMS(PEG)12 Branched Methyl-PEG-NHS-Ester Reagent

A three-branched, polyethylene glycol compound (3 times 12 PEG units) activated as an NHS ester for covalent PEGylation of primary amines on proteins or assay surfaces.

EDGE
29

Thermo Scientific™ MS(PEG)8 Methyl-PEG-NHS-Ester Reagent

Pegylate amines (-NH2 groups) on proteins (lysine residues) or assay surfaces using MS(PEG)n, amine-reactive (NHS ester), methyl-capped PEG compounds (4 to 24 EG units).

EDGE
30

Thermo Scientific™ WELQut Protease (5 U/μL)

Thermo Scientific™ WELQut Protease is a highly specific serine protease cleaving outside the WELQX recognition motif to remove N-terminal protein fusion tags.

EDGE