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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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76 – 90 of 2,844 results
76

MilliporeSigma™ Endopeptidase Lys-C, Achromobacter lyticus

Specifically hydrolyzes amide and peptide ester bonds at carboxylic side of lysine and S-aminoethylcysteine residues

78

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

Protective agent for SH groups

Content And Storage 2°C to 8°C
CAS 3483-12-3
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
79

MilliporeSigma™ β-Lactamase, Bacillus cereus 569/H9

Useful for assaying penicillins and cephalosporins

80

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

Protective agent for SH groups

Content And Storage 2°C to 8°C
CAS 3483-12-3
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
81

MilliporeSigma™ Calbiochem™ Coenzyme A, Trilithium Salt

Serves as cofactor in enzymatic acetyl transfer reactions

82

Thermo Scientific™ Immobilized Papain (Agarose Resin)
GSA_VA

Generate and purify Fab fragments from antibodies with cysteine-endopeptidase papain immobilized onto beaded agarose resin.

83

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.

84

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
85

Invitrogen™ Protease QF

Protease QF, 180 μL, is an enzyme in aqueous buffered solution and an individual component of the ViewRNA™ ISH Tissue Assay Kits, 2-Plex, 24 assays.

ENCOMPASS_PREFERRED
86

MP Biomedicals™ Pepsin

From porcine stomach mucosa

Content And Storage 0°C
Product Type Pepsin
Form Lyophilized
pH Range 1 to 3.5
Sample Type Porcine Stomach Mucosa
For Use With (Application) Used to digest Proteins and is commonly used in the preparation of Fab fragments from Antibodies
87
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Elastase, Porcine Pancreas, PROMO, Thermo Scientific Chemicals

CAS: 39445-21-1 Synonym: E.C. 3.4.21.36; Pancreatopeptidase E

CAS 39445-21-1
Synonym E.C. 3.4.21.36; Pancreatopeptidase E
90

MilliporeSigma™ Calbiochem TCEP, Neutral
GSA_VA

Ready-to-use stable, neutral form of popular disulfide-reducing agent TCEP, Hydrochloride