De Novo Protein Sequencing Procedures and Features
The sequence of a protein molecule is the basis for the function of a protein. Accurate determinat ion of protein sequence plays an important role in the study of protein functional epitopes, detection of commercial monoclonal antibodies, vaccines, and kits. Although there are many studies on protein sequencing, accurate sequencing of proteins is still not as fast and accurate as that of DNA. Protein sequencing is mainly hampered by the purification of protein samples, and the complexity of factors that make up the amino acid com position of proteins. De novo protein sequencing is also called novel protein sequencing. This technique deduces t he amino acid sequence based on the difference in mass between a series of regular fragment ions generated by the peptide collision with an inert gas. We can guess the amino acid sequence and post-translational modifications based on the y ion and b ion at the cleavage of the peptide bond. De novo sequencing has a unique advantage that t