Properties of DBCO-PEG4-Amine, DBCO-NHS ester, DBCO-PEG4-biotin

The biotechnologies have advanced with times and many techniques have been derived for staining the biomolecules. The biomolecules include proteins, peptides, amino groups, DNA’s and other molecules. These are labelled or dyed so that these are easier to detect and can easily be chosen for further reactions. Some of the common labelling chemicals that are used nowadays are as follows:


DBCO-PEG4-Amine stands for Dibenzocyclooctyne-PEG4 amine. It is used for the compounds that have amine an essential component. The biomolecules that contain amine can be labelled and marked by the DBCO-PEG4-Amine. It is the derivative of cyclooctyne.

Mostly the dye is used to stain the conjugates. There are many types of conjugates that are labelled using the DBCO-PEG4-Amine. The protein-peptide conjugates are one of the most complex conjugates. These are dyed using the amine DBCO. It easily incorporates in the structure of proteins and creates the perfect dye. In addition to it, the antibody-drug or antibody-enzyme conjugates are vastly labelled using the same dye. This is very helpful in detecting the specific antibody-drug conjugate. Protein and oligonucleotide conjugates are also labelled and marked using the amine dye. For surface modification, DBCO-PEG4-amine is very often used. It is very advantageous for the process that needs immediate and effective surface modification.

DBCO-NHS ester

DBCO-NHS ester stands for Dibenzocyclooctyne-N-hydroxysuccinimide ester. The dye is widely used in dying and staining activities. During the chemical reactions and testing the dye/chemical is vastly used. There are many advantages of suing the ester dye for staining purposes. The minimum storage temperature that should be maintained is -20 degree Celsius. There are many techniques that are now being used for storing these chemicals at their respective. These are widely used for obtaining the dyes of several conjugate molecules. It is best for protein polypeptide conjugates, the conjugates formed by antibody and enzymes. And the conjugate of peptide-oligonucleotide is also treated using the ester dyes. The dye does not need any catalyst or reagents to make them work properly. They are biocompatible work without any reagents.


DBCO-PEG4-biotin stands for Dibenzocyclooctyne-PEG4-biotin. These are used in dying proteins. The proteins are an essential part of the body and chemists try to explore a variety of combinations

It is also used widely for dying and labelling the biomolecules. The chemical is activity-based protein profiling. When new proteins are synthesised these are detected by means of DBCO-PEG4-biotin. Newly synthesised proteins can easily be detected using the dye. Moreover, the immobilisation of the proteins is also done using the same labelling chemical. More efficient labelling and is done. The reaction time required for the biotin dye is up to 4 hours. But the longer incubation periods are used for low concertation or if the chemists require a low labelling.

Moreover, the chemical can be easily and efficiently used when these are dissolved in water. The chemical can also be dissolved in the organic solvents. The buffer solutions of the dyes are very useful and advantageous. In aqueous buffers, the DBCO-PEG4-biotin are soluble up to 0.35mM.

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