Multiple Choice
Post-translational modifications of proteins may include which of the following processes?
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15. Gene Expression
Post-Translational Modification
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Which of the following processes occur during post-translational modification?
A
DNA replication
B
Phosphorylation
C
RNA splicing
D
Transcription
Verified step by step guidance1
Understand the concept of post-translational modification: It refers to the chemical changes that a protein undergoes after it has been synthesized during translation. These modifications can affect the protein's function, activity, stability, and localization.
Identify the processes listed in the problem: DNA replication, phosphorylation, RNA splicing, and transcription.
Recognize that DNA replication and transcription are processes related to nucleic acids, not proteins. DNA replication is the process of copying DNA, and transcription is the synthesis of RNA from a DNA template.
Understand that RNA splicing is a process that occurs during RNA processing, not post-translational modification. It involves the removal of introns from a pre-mRNA transcript.
Identify phosphorylation as a common post-translational modification. It involves the addition of a phosphate group to a protein, often regulating the protein's function and activity.
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