June 2022

Why do Post-Translational Modifications Matter?

2022-06-28T14:50:40-04:00June 14th, 2022|Articles|

Written by Vanessa Yoon Calvelo, PhD June 2, 2022 Contents What are post-translational modifications (PTMs)? Impact of PTMs Types of PTMs PTMs increase microheterogeneity of antibodies Characterization of PTMs by next generation protein sequencing What are Post-Translational Modifications? Post-translational modifications (PTMs) are processing events typically driven by [...]

What is Polyclonal Antibody Sequencing?

2022-06-01T10:46:05-04:00June 1st, 2022|Articles|

Written by Yuning Wang, PhD May 31, 2022 Contents Background What is Polyclonal Antibody Sequencing? Applications of Polyclonal Antibody Sequencing Advantages of Polyclonal Antibody Sequencing World’s First: De Novo Polyclonal Antibody Sequencing at Rapid Novor Background The native immune system produces polyclonal antibodies (pAb) by different B-cell [...]

September 2021

August 2021

What are Monoclonal Antibodies?

2022-04-25T18:42:59-04:00August 25th, 2021|Articles|

Monoclonal antibodies (mAbs) are homogenous antibodies that bind to a single epitope on an antigen. Kohler and Milstein generated the first mAbs when they developed hybridoma technology in the 1970s. Because of the specificity, homogeneity and unlimited availability, mAbs are valuable reagents used in a variety of important applications including treatment and diagnosis of diseases

De Novo Protein Sequencing vs DNA Sequencing

2022-04-25T19:17:49-04:00August 1st, 2021|Articles|

Written by Yuning Wang, PhD August 1, 2021 What is DNA Sequencing? DNA sequencing is the process of determining the precise order of four nucleotides bases—adenine (A), guanine (G), cytosine (C), and thymine (T)—that make up the DNA molecule. From Sanger sequencing to next-generation sequencing (NGS), DNA sequencing’s accessibility and ease [...]

July 2021

What is the De Novo Amino Acid Sequencing Method?

2022-04-25T20:09:41-04:00July 19th, 2021|Articles|

Proteins are composed of peptide chains, which in turn are made up of a string or linear sequence of amino acids (Figure 1A). Every amino acid has a basic structure containing an amino (-NH2) group and a carboxylic (-COOH) group (Figure 1B). To form a peptide, amino acids link to each other via a peptide bond, which involves the reaction between the carboxylic group of one amino acid and the amine group of another amino acid (Figure 1B). As such, the primary structure of a protein is typically recorded starting at the amino-terminal (N) end and continuing to the carboxyl-terminal (C) end. The primary protein structure may be directly sequenced from a sample of the protein itself or inferred from the DNA sequence.

How do You Obtain the Sequence of an Antibody?

2022-04-18T20:18:42-04:00July 10th, 2021|Articles|

Antibody sequences are critical for antibody engineering and protein characterization in therapeutic development. For antibody reagent users, knowing the sequences allows them to perform sequence analysis/alignment to identify binding and cross-reactivity so they can conduct rational experiment design.

March 2021

June 2016

Moving Towards Recombinant Monoclonal Antibodies

2021-12-14T18:06:16-05:00June 30th, 2016|Articles|

Recombinant Monoclonal Antibodies (rAbs) are highly reproducible, customizable and pure alternatives to the traditional antibodies produced by hybridomas. Get the antibody protein sequence, either by DNA sequencing or the de novo protein sequencing technology, you can rest assured that you can have the exact antibody made recombinantly anytime in the future.