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Editorial Note on Proteomics
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Editorial - (2021) Volume 10, Issue 2

Editorial Note on Proteomics

Satya Lakshmi*
*Correspondence: Satya Lakshmi, Department of Botany, Andhra University, India, Email:
Department of Botany, Andhra University, India

Received: 10-Feb-2021 Published: 24-Feb-2021

Editorial

Proteomics is a relatively-recent field; the term was coined in 1994 while the science itself had its origins in electrophoresis techniques of the 1970’s and 1980’s. The study of proteins, however, has been a scientific focus for a much longer time. Studying proteins generates insight into how they affect cell processes. Conversely, this study also investigates how proteins themselves are affected by cell processes or the external environment.

Proteins provide intricate control of cellular machinery; they are, in many cases, components of that same machinery. They serve a variety of functions within the cell; there are thousands of distinct proteins and peptides in almost every organism. The goal of proteomics is to analyze the varying proteomes of an organism at different times in order to highlight differences between them. Put more simply, proteomics analyzes the structure and function of biological systems. For example, the protein content of a cancerous cell is often different from that of a healthy cell.

Even though all cells of a multicellular oCertain proteins in the cancerous cell may not be present in the healthy cell, making these unique proteins good targets for anti-cancer drugs. The realization of this goal is difficult; both purification and identification of proteins in any organism can be hindered by a multitude of biological and environmental factors. The study of the function of proteomes is called proteomics. A proteome is the entire set of proteins produced by a cell type. Genomics led to proteomics (via transcriptomics) as a logical step. Proteomes can be studied using the knowledge of genomes because genes code for mRNAs and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated intoproteins. Proteomics complements genomics and is useful when scientists want to test their hypotheses that were based on genes.

Even though all cells of a multicellular organism have the same set of genes, the set of proteins produced in different tissues is different and dependent on gene expression. Thus, the genome is constant, but the proteome varies and is dynamic within an organism. In addition, RNAs can be alternately spliced (cut and pasted to create novel combinations and novel proteins) and many proteins are modified after translation by processes such as proteolytic cleavage, phosphorylation, glycosylation, and ubiquitination. There are also protein-protein interactions, which complicate the study of proteomes. Although the genome provides a blueprint, the final architecture depends on several factors that can change the progression of events that generate the proteome.

Proteomic technologies have advanced various areas of drug discovery and development through the comparative assessment of normal and diseased-state tissues, transcription and/or expression profiling, side effect profiling, pharmacogenomics, and the identification of biomarkers. The majority of small molecule drugs and biologics act on protein targets. These proteins do not act in isolation but are embedded in cellular pathways and networks and are thus tightly interconnected with many other proteins and subcellular components. Given this complexity, it seems natural to apply proteomics in the drug discovery process. Target-based approaches start with the selection of a protein target based on its presumed or validated role in the relevant disease

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