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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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61 – 75 of 5,155 results
61

MilliporeSigma™ Calbiochem™ Cleland’s Reagent

Protective agent for SH groups

Content And Storage 2°C to 8°C
CAS 12-3-3483
Product Type Calbiochem Cleland’s Reagent
Form Powder
Molecular Weight (g/mol) 154.24
Solubility EtOH, Water
Purity ≥97% by titration
Synonym DTT, Dithiothreitol
Molecular Formula C4H10O2S2
62

Thermo Scientific™ CA(PEG)12 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 12 ethylene glycol units
Solubility Water
Reactive Moiety Amine, Carboxylic Acid, Primary Amine
Label Type Conjugating Groups, Polyethylene Glycol (PEG)
63

Thermo Scientific™ CA(PEG)4 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 4 ethylene glycol units
Solubility Water
Reactive Moiety Amine, Carboxylic Acid, Primary Amine
Label Type Conjugating Groups, Polyethylene Glycol (PEG)
66

MilliporeSigma™ Calbiochem™ SPUTOLYSIN™ Reagent

Intended for isolation of epithelial cells, pathogenic or saprophytic bacteria, fungi, and yeasts from sputum

67

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
68

MilliporeSigma™ Endoproteinase Asp-N, Excision Grade, Pseudomonas fragi

Designed for protein sequencing or sequence verification, analysis of protein structural domains, and cleavage of fusion proteins

69

Thermo Scientific™ NeuCode™ Lysine-080

Increase the level of multiplexing achievable with NeuCode™ amino acids for the metabolic labeling of proteins for mass spectrometry analysis.

Product Type Lysine
Final Product Type Molecule
Label Type Mass Isotopes of Amino Acids
70

MilliporeSigma™ Calbiochem™ Cleland’s Reagent, ULTROL™ Grade

Protective agent for SH groups

Content And Storage 2°C to 8°C
CAS 12-3-3483
Product Type Calbiochem Cleland’s Reagent
Form Solid
Molecular Weight (g/mol) 154.24
Solubility EtOH, Water
Purity ≥99% by titration
Synonym Dithiothreitol, DTT
Molecular Formula C4H10O2S2
71

MP Biomedicals™ Trypsin, 2.5% (w/v) Solution

Porcine pancreas-derived enzyme commonly used for the dissociation and disaggregation of anchorage-dependent mammalian cells and tissues

73

MilliporeSigma™ Calbiochem™ DM-NITROPHEN™ Reagent, Tetrasodium Salt

Caged Ca2+ chelator that undergoes a major and rapid decrease in Ca2+-binding affinity upon photolysis

74

MilliporeSigma™ Proteinase K, Lyophilized
GSA_VA

Highly active serine protease that exhibits broad cleavage specificity on native and denatured proteins and is widely used in the purification of DNA and RNA

Content And Storage 2°C to 8°C
CAS 39450-01-6
Product Type Proteinase K
75

MilliporeSigma™ Novagen™ Overnight Express™ Autoinduction System 1
GSA_VA

Induces protein expression without monitoring cell density.

Content And Storage 15°C to 30°C