Multiple Choice
Which of the following processes is an example of a post-translational modification?
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15. Gene Expression
Post-Translational Modification
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Post-translational modifications of proteins may include which of the following processes?
A
Phosphorylation
B
DNA replication
C
Transcription
D
RNA splicing
Verified step by step guidance1
Understand the concept of post-translational modifications: These are chemical changes to a protein after it has been synthesized in a cell. They are crucial for the protein's function, stability, and interaction with other molecules.
Identify the processes listed: Phosphorylation, DNA replication, Transcription, and RNA splicing. Note that only one of these is a post-translational modification.
Phosphorylation is a common post-translational modification where a phosphate group is added to a protein, often regulating the protein's activity.
DNA replication is the process of copying DNA before cell division, not a post-translational modification.
Transcription is the process of synthesizing RNA from a DNA template, and RNA splicing is the modification of RNA after transcription. Neither is a post-translational modification of proteins.
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