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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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46 – 60 of 5,155 results
46

Thermo Scientific Chemicals Pepsin, porcine stomach

CAS: 9001-75-6 Synonym: EC 3.4.23.1; Pepsin A

CAS 9001-75-6
Synonym EC 3.4.23.1; Pepsin A
47

Thermo Scientific Chemicals Pepsin from Porcine Stomach

Derived from Porcine stomach

CAS 9001-75-6
Product Type Pepsin
Synonym EC 3.4.23.1,Pepsin A
48

Thermo Scientific Chemicals Papain, Carica Papaya Latex

CAS: 9001-73-4 Synonym: EC 3.4.22.2

CAS 9001-73-4
Synonym EC 3.4.22.2
49

Thermo Scientific™ Pierce™ Mercaptoethylamine-HCl

Pure, crystalline 2-aminoethanethiol (2-MEA-HCl, also called cysteamine-HCl), CAS 156-57-0; selectively reduces antibody hinge-region disulfide bonds.

51

Thermo Scientific™ Pierce™ Hydroxylamine-HCl

NH2OH (CAS 7803-49-8) to cleave Asn-Gly peptide bonds or deprotect sulfhydryls following S-acetylthioacetate modification with SATA reagent.

52

Thermo Scientific™ Pierce™ Iodoacetic Acid

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

53

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).

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
54

Thermo Scientific™ CA(PEG)24 Carboxy-PEG-Amine Compound

CA(PEG)n: pegylated amino acids of the form carboxy-PEG-amine; with 4 to 24 polyethylene glycol units; for surface- and molecule-pegylation applications.

Content And Storage Store desiccated at 4°C. Shipped at ambient temperature.
Product Type Amine Compound
Spacer 24 ethylene glycol units
Solubility Water
Reactive Moiety Amine, Carboxylic Acid, Primary Amine
Label Type Conjugating Groups, Polyethylene Glycol (PEG)
56

MilliporeSigma™ Calbiochem™ PIH

Cell-permeable, non-toxic tridendate iron (Fe3+) chelator of aroyl hydrazone class

57

MP Biomedicals™ Protease, from S. aureus strain V8

Used for selective cleavage of proteins for amino acid sequence determination or peptide mapping

Content And Storage -20°C
Product Type Protease
Form Powder
pH Range 4 and 7.8
Sample Type Staphylococcus aureus V8 Strain
For Use With (Application) Used for selective cleavage of Proteins for Amino Acid sequence determination or Peptide mapping
58

MilliporeSigma™ Calbiochem™ Cleland’s Reagent, Molecular Biology Grade
GSA_VA

Protective agent for SH groups

Content And Storage 2°C to 8°C
CAS 12-3-3483
Product Type Calbiochem Cleland’s Reagent
Form Crystalline Solid
Molecular Weight (g/mol) 154.24
Solubility EtOH, Water
Purity ≥99% by titration
Synonym 1,4-Dithiothreitol, DTT
Molecular Formula C4H10O2S2
59

MilliporeSigma™ Dipeptidylpeptidase IV, His·Tag™, Human, Recombinant, S. frugiperda

Inhibition of DPPIV has been reported to be effective treatment for type II diabetes

60

Thermo Scientific™ MA(PEG)8 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.

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 8 ethylene glycol units
Solubility Water
Reactive Moiety Amine, Primary Amine
Label Type Polyethylene Glycol (PEG), Blocking Groups
Chemical Reactivity Aldehyde