Protein Labeling & Crosslinking

We offer a wide range of products for the  crosslinking, biotinylation, pegylation and fluorescent labeling of proteins, antibodies and peptides. These bioconjugation reagents are commonly used to studying the structure and interaction of proteins, build immunoassays, increase protein solubility or attach molecules to surfaces. Use our crosslinking or biotinylation reagent selection tool to find the optimal reagent for your application, or access our helpful technical handbook to help improve your bioconjugation results.

Popular protein labeling & crosslinking products

Featured protein labeling & crosslinking categories

Convenient labeling kits and reactive dyes for the direct attachment of Invitrogen Alexa Fluor and other dyes for 10 μg to 1 mg of proteins or antibodies.

Reagents containing reactive ends to specific functional groups on proteins and antibodies, enabling the covalent joining or two or more biomolecules for the study of protein function and interaction.

Reagents and kits to chemically tag and label antibodies, proteins, and peptides with biotin or desthiobiotin at particular amino acid functional groups to create labeled antibody or other probes for streptavidin affinity binding, purification, and detection.

Unique single-use packaging format for crosslinking, labeling and reducing reagents in 1 or 2 mg quantities, eliminating the need to weigh out small amounts of dry or viscous chemicals.

Reagents to modify proteins by crosslinking, fragmenting, cleaving, denaturing, reducing disulfides, or attaching functional groups to study protein function and interactions.

Crosslinking, labeling and reducing reagents that require long-term, consistent performance and robust chemical characterization and documentation.

Activated linear and branched derivatives of polyethylene glycol (PEG) for PEGylation and PEG-modification of peptides and proteins via primary amines and sulfhydryl groups to increase solubility, prolong stability, and reduce immunogenicity

Bulk or custom product request

Need larger quantities of our protein labeling, crosslinking or modification reagents? We offer bulk and custom fill sizes.

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