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Buccutite™ Bioconjugation Technology

Rapid Protein Crosslinking Method for Labeling & Modifying Antibodies



Crosslinking
Crosslinking is a technique that chemically joins two or more proteins together, such as an antibody and an enzyme, by a covalent bond. Crosslinking reagents consist of reactive moieties that modify and attach to specific functional groups on proteins. A common approach for conjugating two biomolecules utilizes a small, heterobifunctional crosslinker called succinimidyl 4-(N-maleimidomethyl) cyclohexane1-carboxylate (SMCC). SMCC crosslinkers contain amine-reactive NHS ester moieties and thiol-reactive maleimide moieties to crosslink proteins. However, a drawback to this approach is the many experimental conditions that must be monitored to perform a successful conjugation. Difficulties associated with SMCC conjugations are maintenance of a narrow pH range, self-polymerization, and hydrolytic degradation of reactive moieties. To address these concerns, AAT Bioquest has developed an optimized and robust Buccutite™ crosslinking technique. Buccutite™ crosslinking technology provides a simplistic and efficient approach for conjugating proteins. It can be completed in half the time and with less stringent parameters yielding highly stable and easy to handle conjugated proteins.
 

Buccutite™ Crosslinking Principles




Conjugate Proteins In 2 Simple Mixing Steps. No catalyst required

 

Buccutite™ vs SMCC


Total Operation Time:

  • Buccutite™: 2 Hours
  • SMCC Chemistry: 4-8 Hours

Minimum Sample Concentration

  • Buccutite™ Chemistry: ≥0.5 µg/µL
  • SMCC Chemistry: 0.5 - 5.0 µg/µL

Optimal Conjugation pH:

  • Buccutite™ Chemistry: 5 - 9
  • SMCC Chemistry: 7.0 - 7.5

Conjugation Yield

  • Buccutite™ Chemistry: 50-60 %
  • SMCC Chemistry: ≤ 30

 

Advantages



Tubulins were imaged with RPE- goat-anti-mouse IgG conjugate in HeLa cells. Tubulins were stained using mouse anti-α-tubulin antibody, and visualized with red fluorescent RPE-goat-antimouse IgG conjugate prepared by Buccutite™ crosslinking technology as described above.
Buccutite™ conjugation can be run in a broad pH range of 5-9 and temperature.
  • Fast: Buccutite™ conjugation can be completed in 1-2 hours under extremely mild conjugation condutions. No purification step required with 25 µg kits.
  • Robust: Buccutite™ conjugation can be run in a broad pH range of 5-9 and temperature.
  • Highly Stable: Buccutite™ linker-activated macromolecules are very stable, can be stored at 4ºC for more than 24 months.
  • High Yield: Buccutite™ conjugation gives much higher yield than other existing methods under the same conditions. Eliminating homo-crosslinking of proteins.
 

AAT Bioquest's Custom Bioconjugation Services


AAT Bioquest offers same-day custom conjugation of proteins or antibodies with a wide array of labels, such as biotin, HRP and over 20 fluorophores. Our services are designed to produce high-quality results with a fast turnaround. We take pride in supplying scientists with flexible tools that help expand their research needs.

Features of AAT Bioquest's custom bioconjugation services include:

  • Guaranteed quality with 95% purity rating
  • Affordable price tiers that work with your budget
  • Scalable service with minimum order of 50 µg
  • Same day order fulfilment means your conjugate ships the day you order it
Note: APC and PE custom conjugation services require 3 working days You may supply your own protein or antibody or chose from 3000+ monoclonal and polyclonal antibodies in our catalog. Contact us for a quote today, and let us put our expertise to work for you!

 

Product Ordering Information


 

Table 1. Buccutite™ Rapid Antibody Labeling Kits

Name
Ex (nm)
Em (nm)
Unit Size
Cat No.
Buccutite™ Rapid Protein Crosslinking Kit *Microscale Optimized for Crosslinking 100 ug Antibody Per Reaction*--2 Labelings1315
Buccutite™ Peroxidase (HRP) Antibody Conjugation Kit *Optimized for Labeling 1 mg Protein*--1 Kit5504
Buccutite™ Peroxidase (HRP) Antibody Conjugation Kit *Optimized for Labeling 100 ug Protein*--1 Kit5503
Buccutite™ Peroxidase (HRP) Antibody Conjugation Kit *Optimized for Labeling 25 ug Protein*--2 Labelings5505
Buccutite™ Rapid PE Antibody Labeling Kit *Microscale Optimized for Labeling 100 ug Antibody Per Reaction*5655752 Labelings1310
Buccutite™ Rapid PE Antibody Labeling Kit *Microscale Optimized for Labeling 25 ug Antibody Per Reaction*5655752 Labelings1312
Buccutite™ Rapid PE-Texas Red Tandem Antibody Labeling Kit *Microscale Optimized for Labeling 100 ug Antibody Per Reaction*5656002 Labelings1318
Buccutite™ Rapid PE-Texas Red Tandem Antibody Labeling Kit *Microscale Optimized for Labeling 25 ug Antibody Per Reaction*5656002 Labelings1343
Buccutite™ Rapid PE-Cy5 Tandem Antibody Labeling Kit *Microscale Optimized for Labeling 100 ug Antibody Per Reaction*5656742 Labelings1322
Buccutite™ Rapid PE-Cy5 Tandem Antibody Labeling Kit *Microscale Optimized for Labeling 25 ug Antibody Per Reaction*5656742 Labelings1340


Original created on September 12, 2017, last updated on September 12, 2017
Tagged under: Antibody & Protein Labeling