The structural diversity of proteins in a cell is greatly increased by alternative splicing and posttranslational modifications.

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Alternative splicing allows for different combinations of exons in a pre-mRNA to be included or excluded, leading to the production of multiple protein isoforms from a single gene. Posttranslational modifications, such as phosphorylation, glycosylation, and acetylation, can also alter the structure and function of the protein.

The Structural Diversity of Proteins in a Cell Is Greatly