posttranslationalt
Posttranslational is a term that refers to events occurring after a protein has been synthesized by ribosomes. This process involves chemical modifications to amino acid residues of proteins, which can significantly alter their three-dimensional structure, activity, and localization. These modifications are crucial for the proper functioning of proteins and play a vital role in a wide range of cellular processes, including signaling, metabolism, and gene expression.
Common posttranslational modifications include phosphorylation, glycosylation, ubiquitination, and methylation. Phosphorylation, the addition of a phosphate group,
These modifications can occur at specific sites on the protein and can be reversible, allowing cells to