What is protein sequence determination
Protein sequence determination is used to ascertain the amino acid sequence of proteins or polypeptides. Based on the amino acid sequence of a protein, we can infer the three-dimensional structure and function of the protein. Additionally, by comparing protein sequences across different species, we can understand the course of life's evolution.
There are two main methods for protein sequence determination: Edman degradation and mass spectrometry. Edman degradation is a classical method that involves progressively removing the amino acids from the N-terminus of the protein and identifying each amino acid to obtain the sequence. However, this method is limited to analyzing short and highly pure proteins. Mass spectrometry, particularly tandem mass spectrometry, is a more modern and powerful technique that can analyze long and complex proteins.
The results of protein sequence determination can be applied in multiple fields. In basic biological research, it helps scientists understand the function and structure of proteins. In pharmaceutical research and development, it can be used to identify new drug targets and develop biosimilar drugs. In biotechnology, it can be used for protein engineering and the production of biological products.
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