Phosphorylation Modifications in Protein Functionalities

Phosphorylation, the reversible covalent attachment of phosphate groups to amino acid residues, represents one of the most prevalent post-translational modifications in biology. By introducing a negatively charged moiety, phosphorylation can trigger conformational changes, alter electrostatic landscapes and modulate surface properties of proteins. Such alterations underpin a vast array of cellular processes, from the regulation of enzyme activity and signal transduction cascades to the control of protein–protein interactions, subcellular localisation and protein stability. In multicellular organisms, tightly regulated kinase and phosphatase networks translate extracellular cues into precise phosphorylation patterns, governing cell division, differentiation, metabolism and stress responses. Dysregulation of these pathways is implicated in numerous diseases, including cancer, neurodegeneration and metabolic disorders. Beyond fundamental cell biology, phosphorylation engineering has emerged as a powerful tool in biotechnology and food science, enabling tailored enhancement of protein solubility, emulsifying capacity and thermal stability for industrial and nutritional applications. The universal nature of phosphorylation thus confers both broad biological significance and practical utility.

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Phosphorylation Modifications in Protein Functionalities publication trend

The graph below shows the total number of articles in phosphorylation modifications in protein functionalities across all publications each year (not limited to Nature Index journals).

Technical terms

Phosphorylation: Covalent addition of a phosphate group to an amino acid side chain, modulating protein structure and activity.

Kinase: An enzyme that transfers phosphate groups from nucleotide triphosphates to specific protein substrates.

Emulsifying activity index: A quantitative measure of a protein’s ability to form and stabilise dispersions of oil in water.

Solubility: The extent to which a protein dissolves in aqueous solution, influencing its functional performance.

References

1. Pickering emulsions stabilized by ultrasound-assisted phosphorylated cantaloupe seed protein isolate −chitosan: Preparation, characterization and stability. Ultrasonics Sonochemistry (2025).
2. Functional properties of glutelin from Camellia oleifera seed cake: Improvement by alkali-assisted phosphorylation through changes in protein structure. Current Research in Food Science (2023).
3. The Effects of Phosphorylation and Microwave Treatment on the Functional Characteristics of Freeze-Dried Egg White Powder. Foods (2022).