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 5,531 results

Thermo Scientific Chemicals Elastase, porcine pancreas aqueous suspension

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

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Specifications

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

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

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MilliporeSigma™ Endoproteinase Lys-C, Sequencing Grade, Lysobacter enzymogenes

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

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MilliporeSigma™ β-Lactamase, Bacillus cereus 569/H9

Useful for assaying penicillins and cephalosporins

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MilliporeSigma™ Calbiochem™ BAPTA/AM

Can be loaded into wide variety of cells, where it is hydrolyzed by cytosolic esterases and is trapped intracellularly as the active chelator BAPTA

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Specifications

Membrane Permeable	Y
Content And Storage	-20°C
CAS	126150-97-8
Product Type	Calbiochem BAPTA/AM
Form	Solid
Solubility	DMSO
Purity	≥90% by TLC
Synonym	1,2-bis(o-Aminophenoxy)ethane-N,N,Nʹ,Nʹ-tetraacetic Acid Tetra(acetoxymethyl) Ester

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Thermo Scientific™ Staphylococcus aureus V-8 Protease

Specifically cleave only at glutamic acid residues or cleave at both glutamic and aspartic residues with our immobilized Staphylococcus aureus V-8 protease kit.

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Thermo Scientific™ Immobilized Trypsin, TPCK Treated (Agarose Resin)

Cleave the carboxyl-side of Arg and Lys residues with trypsin that isTPCK-treated to block chymotrypsin activity; its immobilized form allows enzyme removal after digestion.

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Thermo Scientific™ Pierce™ Immobilized Reductant Column, 2 mL

Efficiently reduce protein or peptide disulfide bonds with this reusable column on with an immobilized thiol-based reducing agent for solid-phase disulfide bond reduction.

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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.

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Thermo Scientific Chemicals Trypsin 1:250, porcine pancreas

CAS: 7-7-9002 Molecular Formula: C35H47N7O10 Synonym: EC 3.4.21.4

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Specifications

CAS	7-7-9002
Synonym	EC 3.4.21.4
Molecular Formula	C35H47N7O10

MilliporeSigma™ Calbiochem™ Caffeic Acid

Reported to have anti-carcinogenic anti-inflammatory properties.

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MP Biomedicals™ Protease (S. Aureus) V.8

Protease (S. Aureus) V.8, also called endoproteinase Glu-C, Glu-C protease, staphylococcal serine proteinase. Widely used for protein sequencing, this enzyme specifically cleaves peptide bonds on the COOH terminal side of either aspartic or glutamic acids.